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The purpose of this study is to determine the effect of pesticides on the Acanthodactylus scutellatus clan in the Al-Wadi region and in comparison with two different clans of the same rank, i.e. by comparing the Scincus scincus clan that comes from the “Al-Arish desert” and Water Duty area, and the Acanthodactylus scutellatus clan from the agricultural area located in “Umayya and Nasa” `. Our work is based on the determination of the protein and catalase activity of Ras in Acanthodactylus scutellatus samples. - In our work, we chose the Belford 1957 methodology, which depends on slaughtering samples in a correct manner, and then we preserved the samples according to the stipulated conditions and charters. - We crushed the following organs: the head, the liver, and the rest of the body. We get the test results: A very significant increase in “catalase” activity in the head was recorded in the farming samples of Acanthodactylus scutellatus, which recorded 352.8 ± 0.001 μM/mn/mg compared to the samples of “catalase” activity in the head of type Acanthodactylus scutellatus, which recorded 63.7 ±25.7 μM/ mn/mg

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1. Das Geruchsvermögen ist bei den Eidechsen (L. viridis, L. agilis, L. muralis) gut ausgebildet. Sämtliche Beute wird gerochen 2. Die Nase spielt eine bei weitem größere Rolle als das Jabobsonsche Organ. Dieses tritt, übereinstimmend mit den Befunden Kahmanns, nur akzessorisch in Funktion zum unmittelbaren Prüfen vor oder in dem Munde. 3. Der Beutegruch wird durch die Nase aus ca. 8 bis 10 cm Entfernung sichtbar wahrgenommen (durch die gesteigerte Brustatmung, die als „Pumpen“ bezeichnet wurde, erkenntlich) und löst Suchbewegungen aus. 4. Dieser allein ist bei Ausfall des optischen Sinnes befähigt, Zubeißen und Freßakt, selbst bei ungeeigneten Objekten, auszulösen. Es ist höchstwahrscheinlich, daß ein Geruchsscheme den Tieren angeboren ist. 5. Eidechsen lassen sich entgegen diesem angeborenen Geruchsscheme auf fremden Geruch positiv dressieren, wie Versuche mit stark süßlich duftenden Öl aufzeigten. Es gelang, andressierte Eidechsen nach Steinen usw., die mit Dressurduft markiert waren, beißen zu lassen, selbst als die Tiere im Besitz ihres optischen Sinnes waren. 6. Es hat den Anschein, als würden die Lacerten zirka eine Woche zur Bildung neuer Assoziationen benötigen, sobald sie täglich andressiert werden. Diese Zeitspanne wurde ungefähr bei den von mir durchgeführten Geruchs- und Geschmacksdressuren, sowie auch bei den Gehördresuren von Berger (1924) als Lernzeit benötigt. 7. Die Eidechsen konnten durch Vergällung einer bestimmten Beute mit Kochsalz dazu gebracht werden, bei gleichzeitiger Ausschaltung des optischen Sinnes diese Beute zu meiden, nahmen jedoch andere Nahrungsobjekte an. Durch Engerstellung der Verschiedenheit der Beutetiere konnte gezeigt werden, daß die Echsen in der Lage sind, selbst feinste Qualitätsunterschiede des Geruches zu registrieren. Sie vermochten Grillen von Locustiden, und weiters Locustiden untereinander geruchlich zu unterscheiden, auch wenn diese lebend und unvergällt angeboten wurden. 8. Auf dieses Vermögen dürfte die Bildung eines erworbenen Nahrungskreises zurückzuführen sein. Für sein Bestehen spricht die Bevorzugung von Lieblingsfutter, sowie die Ablehnung gewisser Beutetiere schon aus relativ großer Entfernung. 9. Freilandbeobachtungen zeigen, daß der Geruch bei Nahrungssuche, in unübersichtlichem Gelände von großer Bedeutung sein dürfte, analog zu den Feststellungen im Laborversuch. 10. Der arteigene Geruch ist bei Lacerta viridis wesentlich am endgültigen Festlegen im Verhalten gegenüber dem Artgenossen als Gegner oder Geschlechtspartner beteiligt. Ein Männchen dieser Art kämpft nicht gegen ein anderes, sobald dieser Reiz in der Reizsumme fehlt. Umgekehrt wird bei Anwesenheit des typischen Geruches gekämpft, auch wenn die optischen Merkzeichen stark verändert erscheinen; daraus wird die Bedeutung dieses Faktors im Reizsummenphänomen beim Paarungsverhalten ersichtlich. Der geschlechts-charakteristische Geruch stammt nicht aus den Schenkelporen, da eine operative Entfernung derselben keinerlei Änderung des Verhaltens bewirkte. 11. Die Nasenhöhle registriert Luftfeuchtigkeit und ermöglicht den Eidechsen das Wasser gerichtet aufzufinden. Die Nase darf daher als Alarm- und Leitsinnesorgan bezeichnet werden. Bei der Auffindung von Wasser kann der optische Sinn zusätzlich in Aktion treten, wobvei auf stark lichtbrechende Stellen angesprochen wird. 12. Bei Ausschaltung des Olfactorius sind die Tiere nicht imstande, Wasser zu finden, außer in optisch günstigen Fällen. 13. Freilandbeobachtungen zeigen, daß die Eidechsen durch Tau und Regenfall ihr Wasserbedürfnis gedeckt finden. Bei großer Trockenheit ziehen sich die Tiere zu einem Trockenschlaf zurück, den sie unterbrechen, sobald genügend Feuchtigkeit vorhanden ist. Die Luftfeuchtigkeit wird von den versteckt liegenden Tieren durch die Nase perzipiert und veranlaßt das Aufsuchen der Feuchtigkeitsquelle. Diese Annahme machen Freilandbeobachtungen auch in der natürlichen Umwelt höchst wahrscheinlich.

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This study includes a list of reptiles collected from Rumaila desert, south of Iraq, with a redescription of snake Eryx jayakary were given.

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Corpuscular Constants: hemoglobin, hematocrit (packed cell volume), and red cell count; also blood glucose and total plasma protein of the lizards Acanthodactylus scutellatus and Eremias brevirostris were determined. For Acanthodactylus scutellatus the mean values are : 8.5 g/100 ml, 30.0%, 1.135 x 106/mm3, 224.6 mg/100 ml, and 4.7 g %. For Eremias brevirostris the mean values are: 9.2 g/100 ml, 30.8%, and 1.424 x 106/mm3, 217 mg/100 ml, and 4.0 g % respectively. Electrophoretic mobilities of the three protein systems, serum, plasma and hemoglobin ere similar in the two lacertid lizards, but different from those previously obtained by the same author for two agamid lizards. Electrophoretic patterns of serum and plasma proteins consist in both lizards of four fractions, albumin, ل-globulin, â-globulin and م-globulin. The ل-globulin fraction was not resolved into and ل1 and ل-2- C12 as obtained in the agamid lizards. Regarding the relative proportions of the different protein fractions and the albumin: globulin ratio. both lizards showed but little variation from each other. In all individuals of the two species examined, no fibrinogen fraction was detected in their plasma patterns. Hemoglobin of both lizards behaved as a homogeneous single fraction slightly moving towards the anode. The rate of movement was nearly the same in both lizards, but it differed from that recorded for the agamid lizards.

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The aim of this study is to show the osteological characters of the fore- and hind-limbs and the locomotion features in some reptilian species: Laudakia stellio, Hemidactylus turcicus, Acanthodatylus scutellatus, Chalcides ocellatus, Chamaeleo chamaeleon, collected from different localities from Egypt desert and Varanus griseus from lake Nassir in Egypt. In the studied species, the fore- and hind-feet show wide range of variations and modifications as they play very important roles in the process of jumping, climbing and digging which suit their habitats and their mode of life. The skeletal elements of the hand and foot exhibit several features reflecting the specialized methods of locomotion, and are related to the remarkable adaptations. Locomotion is a fundamental skill for animals. The animals of the present studies can take various forms including swimming, walking as well as some more idiosyncratic gaits such as hopping and burrowing.

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The present work provides a list of all amphibians and reptiles recorded from Iraq up to 2014. It includes 115 species (105 species of reptiles and 10 species of amphibians) dating back to 25 families (20 families of reptiles and 5 families of amphibians). Conservation status of each species was mentioned.

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Desert locations in Al-Burgan oil fields of Kuwait were subjected to oil pollution generated by the Gulf war in 1990. Studying sand lizard (Acanthodactylus scutellatus) population and their ant prey in the years 2002 and 2003 to monitor the effects of oil pollution was thought to be useful in an area damaged by oil spill. Sites with apparently different levels of pollution, namely tar mat, soot and clear sites were compared with control sites outside this area. Live specimens of A. scutellatus were collected by drift fence and pitfall traps and were marked by toe clipping and painting bands before they were released. Ant population was collected by removal methods using vacuum. The mark-recapture Schnabel method of population estimation was used. The results revealed no difference in lizard population sizes between the different study sites in 2002 and 2003. A slight difference was observed in ant population sizes between the sites in 2002 but no difference was detected between the sites in 2003. Although, the mean estimated lizard numbers were lowest at the tar mat sites, the ant number in this location was greatest, meaning that food availability was highest at these sites. This suggests any reduction in the numbers of lizards is unrelated to low resource availability.

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Desert ecosystems in Al-Burgan oil fields of Kuwait were contaminated by heavy metals and petroleum hydrocarbons due to oil spill generated by the Gulf War in 1990. Studying sand lizard (Acanthodactylus scutellatus) population and their ant prey in the years 2002 and 2003 to detect the effects of oil pollution is now a focus of study. Polluted sites with apparently different degrees of pollution (namely tar mat, soot and clear sites) were compared with control sites outside this region. Total lizard numbers were recorded by using transect method. Number of ants was recorded by walking the transects and counting ants present. The results showed no difference in lizard population between the different study sites in 2002 and 2003 by applying the transect method. No difference in ant populations between the different study sites in 2002 and 2003. Although, the mean estimated lizard numbers were lower at the tar mat sites, the ant number in this location was greatest, meaning that food availability was highest at these sites. This suggests any reduction in the numbers of lizards is unrelated to low resource availability. The lizard numbers at the tar mat sites could be depressed by some property of the pollutants.

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This study investigated the impact of oil pollution on morphological measurements in adult male and female sand lizards captured in locations with apparently different pollution levels. The results of this study confirmed that there is sexual dimorphism in body size, with males being generally larger than females at all the study sites. Adult male (but not female) lizards were generally bigger at the Tar mat and soot than the clear and control sites. The increase in body size and weight suggests that there is a greater availability of food for these somewhat territorial reptiles in both the Tar mat and soot sites. An alternative explanation is that the food resource is affected by oil pollution such that lizards consuming prey with high levels of fat accumulate more adipose tissue in their bodies.

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Using indicator species to monitor the effects of oil pollution was thought to be useful to assess whether local desert reptiles and their insect prey could fulfill such a role in an area damaged in the second Gulf War (1990). Polluted sites with apparently different degrees of contamination (namely tar mat, soot, and clear sites) located at Kuwait`s Greater Al-Burgan oil field were compared with control areas outside this region in study conducted in 2002. Five Acanthodactylus scutellatus lizards from each study and control site were humanely killed and stored in a freezer at -20 degrees C until analysis. Ants from the same sites were also collected and treated in a similar manner. Lizard and ant whole body tissues were subjected to gas chromatography-mass spectrometry (GC-MS) to determine concentrations of petroleum hydrocarbons (HCs). The study concentrated on sixteen polycyclic aromatic hydrocarbons (PAHs), EPA priority pollutants used as indicators of petrogenic HC contamination. There were significantly different concentrations of total PAHs in lizards and ants among all four study sites. Of the 16 PAHs, phenanthrene, fluoranthene, and benzo[a]anthracene were present in both lizard and ant samples from the Greater Al-Burgan oil field sites irrespective of the apparent degree of pollution but were undetectable in materials from the control sites. The range of total PAHs in lizards was 26.5-301 ng g(-1) and it was 6.7-82.1 ng g(-1) in ants. Concentrations increased progressively along an expected contamination gradient. Total PAHs were detected in biota even in an area (clear site) that did not appear, virtually, to contain petroleum soil pollution which supports the value of indicator biota species. For all three sites where PAHs were found in biota, the ratio of total PAHs in ants to lizards was consistently 3.3-3.4. These data show that, although 12 years have passed since the Kuwait oil spill catastrophe, all sites are still contaminated with PAHs. Use of lizard and ant materials in monitoring such desert locations seems to be an effective strategy.

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The purpose of this study was to investigate the impact of oil pollution in a desert location (the Greater Al-Burgan oil fields, an area damaged in the Gulf War in 1991) in Kuwait on the hepatotoxicity of the Sand lizard Acanthodactylus scutellatus (A. scutellatus). Twenty lizards (10 of each sex) from each polluted and each control sites were collected. Livers were removed from dissected animals and ready for fixation by Bouin`s solution and formal-saline. Twenty sections (10 from males and 10 from females) from each tar mat (polluted) and control sites were prepared and examined for cell diameter and nuclear measurements using Cell Analysis Systems. The cytology of hepatocytes showed normal appearance in samples from the control sites. Dead cells were abundant in the sections of lizard livers from the tar mat sites and occurred in notably greater numbers than the sections of livers of animals from the control sites. Examinations of the data confirm that the cell and nuclear diameters in liver samples of males collected from polluted sites were generally greater than those of corresponding females. The liver sections obtained from animals in the tar mat site had greater cellular diameters than counterparts from control sites. Females from the polluted sites were also affected by oil pollution by having larger hepatocyte diameters and their nuclei were also affected, being larger than female nuclei from the control sites. The most remarkable feature observed in hepatocytes of lizards collected from the tar mat sites were swelling of hepatocytes, ballooning degeneration of hepatic cytoplasm and cell death. This study confirmed that the prolonged exposure to oil pollution may result in increased accumulation of contaminants and may cause severe liver pathology in a range of wild organisms such as A. scutellatus.

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Oil pollution in desert locations in Greater Al-Burgan oil fields of Kuwait generated by the 1990 Gulf war has changed field behaviour and morphology of the Fringe-toed Lizard Acan- thodactylus scutellatus (Audouin, 1827). Lizards from the dark ‘tar mat’ locations are notably darker in colour than those from the control sites. Consequently, A. scutellatus collected from ‘tar mat’ and counterparts from lighter control sites were compared in laboratory studies where the lizards could choose between a dark and a light side of an enclosure. The former lizards showed a clear preference for darker substrates whereas the latter clearly preferred the light substrate. Dark lizards on tar mat have more effective crypsis but also some advantages in terms of solar gain (surprisingly, reptiles from tar mat sites are generally larger than counterparts from uncontami- nated sites). It is uncertain whether the presence of dark substrates for more than a decade (this study was conducted in 2003) has resulted in a selection of morphologically dark sand lizards with a preference for dark surfaces or whether these reptiles simply use their skin chromatophores to adapt to different surfaces but show a preference for substrates similar to their body colour- ation.

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An attempt was made to study the effects of oil pollution in a desert location (the Greater Al-Burgan oil fields, an area damaged in the second Gulf War) in Kuwait on the behaviour of the Sand lizard A, scutellatus. Polluted sites with apparently different degrees of contamination (namely tar mat, soot and clear sites) were compared with control areas outside this region. Between 2002 and 2003, ten lizards (5 of each sex) on each polluted and each control site were observed in the field at a time of the year when they were highly active. Air, substrate and burrow temperatures were recorded and lizards were monitored for their morning emergence times, as well as their basking and foraging activities. The present study confirmed that the morning emergence times and the basking behavior varied in sand lizards among the different pollution site categories. Physical changes in the tat mat sites caused the substrate temperatures in these locations to rise more quickly in the morning in response to solar gain than was the case in the other sites. This gives lizards in these locations the opportunity to emerge earlier and to start eating more quickly, giving them an energetic advantage (perhaps, in turn, influencing their rates of growth and fecundity). The cleat sites had the next earliest emergence and were the next hottest but it is difficult to account for this in terms of the physical characteristics of this site. The basking times were clearly shorter on the dark soot and tar mat sites that appeared to have higher solar gain than control or clear sites. There did not appear to be any obvious differences in foraging activity of lizards in the different locations. It appears that some aspects of simple behaviour in these lizards provides a reliable, noninvasive indices for assessing oil pollution in desert locations. The precise impact of these changes in these reptiles on their long-term viability needs to be evaluated.

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The structure of the lizard community in Damietta was analyzed in the present study. Five locations were selected as a study area, each represents different habitat of Damietta Governorate. Seven lizard species were recorded which are related to four families and five genera. They were Chamaeleo africanus, Hemidactylus turcicus, Chalcides ocellatus, Mabuya quinquetaeniata, Mabuya vittata, Acanthodactylus boskianus and Acanthodactylus scutellatus. The lacertid lizards Acanthodactylus boskianus and Acanthodactylus scutellatus were the most common species in the community. Therefore, the study was extended to reveal the genetic variability for the population of these two species in Damietta. Four arbitrary chosen enzymes were analyzed electrophoretically. These enzymes were Glucose-6-phosphate dehydrogenase (G6PDH), esterase (EST), lactate dehydrogenase (LDH) and acid phosphatase (ACP). Eleven presumed gene loci have been recorded. A. scutellatus showed higher genetic variability with a polymorphism of 90% of its population compared to 82% for the samples of A. boskianus.

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In this study, we identified the diversity of the freshwater, marine and terrestrial herpetofauna of the State of Kuwait. It consists of a total of 45 extant species; 44 species of reptiles and a single species of amphibian according to recent updated taxonomic studies. All specimens of reptiles collected and held in American and European natural history museums are documented. Four species are added to the herpetofauna of Kuwait: Chalcides ocellatus, Hydrophis lapemo ides, Hydrophis viperina, and Trapelus agnetae.

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Arabia, including the arid lowland regions of Jordan, Syria, Iraq and southwest Iran, has approximately 128 species of terrestrial reptiles and about 7 of amphibians. Endemicity is high, 55% of species being largely or entirely confined to the area. Abrupt faunal discontinuities are present between Arabia and neighbouring regions, namely the Horn of Africa, the Sahara desert and the relatively mesic areas to the north. However, there must have been substantial interchange with these areas in the past. Within Arabia, the main Zoogeographie division is between the arid regions occupying most of the peninsula and much smaller, often more mesic areas of endemicity in the south. The former are mainly occupied by Saharo-Sindian taxa and have rather more affinities with the Sahara than to arid regions east of Arabia. Southern areas of endemicity include: 1. The southwestern coast, with affinities to the Horn of Africa and the inland deserts of Arabia. 2. The southwest and southern highlands which share a number of forms with northeast African relationships but differ significantly, the former having more, often endemic species with African affinities and a number with relatives in the Mediterranean and other northern mesic regions. The drier southern mountains have their own endemics, some of which have representatives in the öiddat al-HaräsIs area to the east. 3. The north Oman mountains also possess distinctive species and populations, some of which are related to forms in the less arid parts of the Iranian area. Finally there are a number of mesic forms distributed around the periphery of Arabia, and populations at oasis sites in the arid region which are probably relicts of forms more widespread in Quaternary pluvial phases.

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Differences in surface structure (ober- hautchen) of body scales of lacertid lizards involve cell size, shape and surface profile, presence or absence of fine pitting, form of cell margins, and the occurrence of longitudinal ridges and pustular projections. Phylogenetic information indicates that the primitive pattern involved narrow strap-shaped cells, with low posteriorly overlapping edges and relatively smooth surfaces. Deviations from this condition produce a more sculptured surface and have developed many times, although subsequent overt reversals are uncommon. Like variations in scale shape, different patterns of dorsal body microornamentation appear to confer different and conflicting performance advantages. The primitive pattern may reduce friction during locomotion and also enhances dirt shedding, especially in ground-dwelling forms from moist habitats. However, this smooth microornamentation generates shine that may compromise cryptic coloration, especially when scales are large. Many derived features show correlation with such large scales and appear to suppress shine. They occur most frequently in forms from dry habitats or forms that climb in vegetation away from the ground, situations where dirt adhesion is less of a problem. Microornamentation differences involving other parts of the body and other squamate groups tend to corroborate this functional interpretation. Microornamentation features can develop on lineages in different orders and appear to act additively in reducing shine. In some cases different combinations may be optimal solutions in particular environments, but lineage effects, such as limited reversibility and different developmental proclivities, may also be important in their genesis. The fine pits often found on cell surfaces are unconnected with shine reduction, as they are smaller than the wavelengths of most visible light.

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We report the impact of human-induced desertification on the species richness, abundance, and composition of sand dune flora and herpetofauna of North Sinai, Egypt. Our hypothesis was that degraded habitats would have reduced vegetation complexity, richness, and abundance, and consequently lower reptile species richness and abundance. We also hypothesized that desert lizards would not follow the typical generalist/specialist responses to habitat degradation found in other biomes. Instead, we predicted that because vegetation loss intensifies the environmental extremity of deserts, those species specialized for open and sandy environments would be more likely to persist in desertified habitats than would desert generalists. Our results showed that areas protected from vegetation loss did not have significantly higher vegetation richness or abundance except for only a few species. However, protected sites did have significantly higher percent veg etation cover and height. Habitat protection clearly had strong effects on the reptile community as species richness and abundances were significantly higher in protected sites. The composition of the reptile community between protected and unprotected sites differed significantly. Contrary to past studies in other environments, desert generalist species were not able to persist in degraded sites and were only found in protected sites. Specialist species were ubiquitous in that they occurred in both areas protected and unprotected from vegetation loss. We propose that the effects of disturbance on species composition (specialists or generalists) depends on whether the disturbance exacerbates or reduces environmental harshness and the conditions that favor specialization. In extreme environments, specialist and generalist responses to habitat degradation are opposite to that of more productive environments.

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Bénéficiant de paramètres climatiques favorables aux reptiles, les milieux arides représentent un laboratoire et un observatoire idéal de la faune reptilienne, essentiellement les lézards. Ces derniers jouent un rôle prépondérant dans l’équilibre des écosystèmes et le maintien de la diversité biologique dans les milieux arides. Le genre Acanthodactylus, est celui qui caractérise le mieux les populations de lézards du paléarctique occidental et saharienne, on retrouve quelques Espagne et en Asie. Mais c’est surtout en Afrique du Nord où on rencontre le plus gros des effectifs. Ce genre a la particularité d’avoir un taux de polymorphisme très important il scindé en quatre complexe d’espèce (A. , A. pardalis, A. boskianus et A scutellatus). Cette diversité est associée à une variabilité morphologique importante au sein des populations. C`est dans cette optique que s`inscrit la présente étude qui porte sur la variabilité phénotypique des caractères morphologiques externes, de trois populations de lézard du genre Acanthodactylus appartenant au complexe A. scutellatus. Nos échantillons, ont couvert deux différentes stations situées au Sahara algérien: Adrar et El Oued; soit un effort de collecte de N = 108 spécimens dont 48 femelles et 60 mâles. Nous avons pris en compte 04 caractères morphologiques scalamétriques qui ont été joignis à 30 caractères morphologiques. Il ressort des résultats que les caractères d’écailleurs chez les Acanthodactyles ne présentent pas un effet sur le dimorphisme sexuel. En revanche nous avons mis en évidence que 08 des 30 caractères analysés sont discriminants et permettent par leur combinaison de caractériser la population d’Adrar.

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Cette note est destinée à faire le point sur le peuplement herpétologique du Maroc. Elle comprend: — Une liste des formes effectivement présentes au Maroc, avec les affinités biogéographiques des espèces, et éventuellement les travaux récents où ces formes sont étudiées. — Des commentaires sur les espèces africaines douteuses en Europe et européennes douteuses en Afrique. — Une liste des espèces à rechercher au Maroc. — Une discussion sommaire sur la systématique de certaines espèces marocaines.

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The physical geography of Iraq is summarised. Using data from the relevant literature and current information from the Internet, a very provisional checklist of Iraqi amphibians and reptiles is presented. Ten amphibian species are reported for Iraq, and exactly 100 reptile species.

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1. Intercellular bridges connect the oocyte with its surrounding follicle cells. 2. Fibrillar bundles and microtubules are oriented along the length of the bridge. Mitochrondria, endoplasmic reticulum, multivesicular vesicles and other cytoplasmic components are also present in this region. 3. This communication may be very important for the flow of nutrients necessary for the growth of the oocyte.

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The ultrastructure of the nuclei in the ovarian follicular cells has been examined in the lizards Acanthodacylus scutellatus hardyi, and Eremias brevirostris. During certain growth stages, the nuclei of the intermediate and the pyriform cells become large and conspicuous, and usually contain numerous morphologically variable nucleoli. The latter may be nucleolonemal, compact, ring-shaped, “filamentous”, “fine-filamentous”, “amorphous” or “course-granular” in type, and the number and type in each nucleus seems to be related to the developmental stage. The type of nucleolus may indicate different phases of activity in the nucleus and may also suggest an association with the production of different types of RNA.

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The study that we present has two objectives: to expand our knowledge of the herpetofauna in the region of Tiaret and bordering areas, with a primary focus on distribution and update the threats that will affect this group, to propose solutions to protect and conserve the species of these areas. In spring 2014, we identified in this study, 6 species of amphibians and 22 species of reptiles. In some cases, we collected biological samples for later analysis. The majority of locations where prospected between May 22 and June 7, has a high biodiversity of herpetofauna, which shows how important it is, to preserve this species.

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We discuss three aspects of the thermal biology of lacertid lizards. First, we provide an overview of the available data on field body temperatures (Tb), the thermal sensitivity of various performance functions and selected body temperatures in different species of lacertid lizards. We also briefly summarise information on the mechanisms of thermoregulation. Second, we discuss recent developments to estimate the »precision« of thermoregulation, and the contribution of distinct behavioural mechanisms. Finally, we revise available evidence for the existence of evolutionary adjustments of thermal characteristics in lacertid lizards. Existing studies have mainly dealt with within- and among-species differences in thermoregulatory behaviour (selected temperatures) and thermal physiology of adults (optimal temperatures, heating rates). Available data provide only limited evidence for clear-cut evolutionary shifts in thermal physiology characteristics along climatic gradients.

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The taxonomy of the fringe-toed lizards of the Acanthodactylus scutellatus group has long been unstable and no consensus exists on the systematic status of its various forms. A multivariate analysis of morphological characters, performed on over 1000 specimens from most of the African range of this group, allowed us to clarify the specific allocation of most of the Saharan populations included in this species group. Based on comparisons of morphology between allopatric and sympatric populations of this complex, we propose the recognition of six biological species. Our results confirm the specific status of Acanthodactylus aureus , A. dumerili , A. scutellatus, A. longipes and the recently described A. taghitensis . In addition, we re-validate A. senegalensis (occurring from Mauritania and Mali south to Senegal), which has been treated as a synonym of A. dumerili by previous authors. Acanthodactylus longipes is reported for the first time from coastal Mauritania, and A. taghitensis (previously known only from a very small region in Algeria) is reported from continental Mauritania. The systematic section of this paper includes a full list of examined material, diagnosis and known distribution of each species, in addition to some information on geographical variation and ecology. A key for specific identification is provided as an appendix.

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Environmental demands that require intensive search for mates, food and nest sites are correlated with efficient spatial memory in many mammalian and avian species. This convergence of evidence has led to the view that spatial memory, and the neurological structures associated with it, have been selected in niches that require memory for the location of goal objects. Whether such evolutionary demands are also correlated with nonspatial abilities that require flexible use of associations similar to those required for spatial memory has not been well studied. In addition, correlations between niche types and the use of spatial or nonspatial memory have not been investigated in nonmammalian, nonavian taxa. In this study, we investigated the relationship between foraging strategies and performance on two tasks, one spatial and the other nonspatial, in congeneric lizard species:Acanthodactylus boskianus, an active forager that collects clumped sedentary prey,Acanthodactylus scutellatus, a sit-and-wait predator that collects distributed mobile prey. The two species did not differ in their performance of a spatial memory task, butA. boskianus, the active forager, performed better on the reversal of a visual discrimination, a nonspatial task. These findings question the generality of the spatial adaptation model for vertebrates. We present the pliancy hypothesis, which we developed to account for these results.

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The lizard fauna of Jordan is very diverse and forms 55.5% of the terrestrial herpetofauna of the country. Lizard species of Arabian origin form the highest percentage (43%) of the lizards, followed by Saharo-Sindian (35%), Palaearctic (20%) and only 2% with Afrotropical affinities. 69.1% of the lizard species inhabit two ecozones: Badia (Eastern Desert); and Wadi Araba and Wadi Rum. The Badia may form the focal point for the evolution of certain Acanthodactylus species. Jordan forms the southernmost limit of the distribution of some Palaearctic species (i.e. Lacerta media, L. laevis, Pseudopus apodus) and they inhabit the Mediterranean ecozone. The presence of diverse habitats in Jordan allowed certain allopatric congeneric species of the genus Ptyodactylus to live in isolation from one another. Southern Jordan and Wadi Rum are part of the Levantine land bridge and act as a “biogeographical filter”. Most of the species found in Wadi Rum are of Arabian affinities and their distribution does not extend towards the west.

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Zoogeographically, the Syrian herpetofauna is heterogeneous, originating from four biogeographical regions (Oriental, Palearctic, Saharo-Sindian and Afrotropical) and is characterized by the presence of five ecozones. 50% of the terrestrial herpetofaunal species are of palaearetic affinity while 32.3%, 14.6% and 3.1% are of Saharo-Sindian, Arabian and Afrotropical affinities, respectively. Five records of reptiles are new to the Syrian fauna: Emys orbicularis, Acanthodactylus opheodurus, Acanthodactylus schreiben syriacus, Pseudotrapelus sinaitus, Uromastyx aegyptia microlepis, and Lepto- typhlops macrorhynchus; Coluber rogersi is reported for the second time. An updated list of the herpetofauna of Syria is given.

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Mean body temperature (MBT) at activity in outdoor cages was measured in small lizards of four species of Acanthodactylus (Lacertidae). All species were found to be thermophilic; the MBT of A. schreiberi is 40.6 C, A. boskianus 39.2 C, A. scutellatus-39.3 C, and that of A. pardalis-37.8 C. No significant differences in MBT were found between A. boskianus and A. scutellatus. Statistically significant to highly significant differences were found comparing other pairs of species. Significant differences in MBT between A. schreiberi and A. scutellatus may allow sympatry in some places. Heat absorption by lizards in outdoor cages was mainly from the substratum. Cloacal temperatures adjust to changes in substratum temperature within 5 minutes even when the lizards are exposed to direct sunlight. These lizards can be regarded as primarily thigmothermic species that occasionally bask.

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In the present work, the structure of the tongue has been described in the context of its functional phylogenetic significance in 7 species of lizards inhabiting Damietta; Acanthodactylus boskianus (Bosc`s lizard), Acanthodactylus scutellatus (Nidua lizard), Mabuya quinquetaeniata (Bean skink), Mabuya vittata (Banded skink), Chalcides ocellatus (Ocellated skink), Hemidactylus turcicus (Warty gecko) and Chamaeleo africanus (African chameleon). There is similarity in gross appearance of the tongue between species. The tongue is bifurcated. Based on regional differences in surface morphology, the dorsum of the tongue can be divided into 3 regions. Histological examination revealed that in Acanthodactylus boskianus and Acanthodactylus scutellatus the tongue structure is nearly the same. In addition, there is a great similarity in tongue structure between Mabuya quinquetaeniata and Mabuya vittata. On the other hand, tongue musculature is the same in all studied species in chameleon which belong to another sister group.

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Reptiles are a successful group in subtropical arid regions. However, little is known about the drivers that influence the diversity of arid reptile communities. One approach is to investigate the variation in phylogenetic structure of the communities along a broad environmental gradient. In this study, I investigated these patterns in the communities of lacertids at the periphery of the Sahara Desert in Tunisia. The effect of the environment was assessed based on a set of variables describing the climate, topography, substrate and cover of perennial vegetation. The phylogenetic alpha diversity was described using the mean pairwise distance (MPD) and the mean nearest taxon distance (NTD) metrics. The analyses showed that the lacertid species could be clustered into three main ecological groups: mesic (Podarcis vaucheri, Psammodromus algirus, Psammodromus blanci, Timon pater), xeric (Acanthodactylus blanci, Acanthodactylus boskianus, Acanthodactylus maculatus, Mesalina olivieri, Ophisops occidentalis), and hyperxeric (Acanthodactylus dumerilii, Acanthodactylus longipes, Acanthodactylus scutellatus, Mesalina guttulata). The analyses also indicated that environment had a weak influence on species richness (15.7% of explained variance), but a strong effect on the phylogenetic (76.5% NTD, 89.5% MPD) structure. The lacertid communities tended to be phylogenetically clustered on sandy substrates under arid climate conditions, and overdispersed under more humid climatic conditions.

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Fezzan province (Libya) is a segment of true Sahara, is characterized by diverse habitats that are utilized as shelters and feeding ground for many desert wildlife species. Oases with water table near the surface are the most prominent feature in the Libyan desert. The diversity in habitats resulted in diversity in wildlife, as well as the plant cover (trees and bushes) is the most effective factor for the existence and the abundance of wild animals, in particular bird species. This study observed many species of reptiles, birds and mammals. In the study is also reported the rock hyrax Procavia capensis Pallas, 1766 (Hyracoidea Procaviidae) a rare and endemic species at the area.

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Hyalomma franchinii is a three-host tick with one life cycle per year under natural conditions. The immature stages of Hy. franchinii parasitize lizards and, less commonly, rodents. Adult hosts are camels, cattle, sheep and donkeys. Immature stages are found on lizards all year around, having been recorded on Acanthodactylus boskianus, Acanthodactylus schreiberi, Acanthodactylus scutellatus and Agama mutabilis according to data summarised by Apanaskevich et al. (2008). Adults appear to be most common during the cooler months of the year. Observations in Egypt (July and August) mentioned a duration of egg development of about 25 days, and a duration of larval moult of about 14–16 days (recorded in September–October)

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Herpetological trip to Israel in 2016 A combination of a long lasting wish to visit the Middle East and motivated by a book of Bar & Haimovitch (2012) we undertook a trip to Israel in the period April 11- 21 2016. The field guide mentions 92 reptile and amphibian species occurring in Israel. Besides that you can find a lot of other animals in Israel, amongst which specific birds, mammals and eighteen species of scorpions (Stockmann & Ythier, 2010). We had five accommodations (two days each) from the most northern part (the Golan Heights to the most southern part of Israel (Eilat). In the table you can see what kind of reptiles and scorpions we discovered in specific regions of Israel. We thank Aviad, Aviv and Ilian for their enthusiastic support and hospitality and Gert-Jan for his support to organize this trip.

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The 84 lizards of the Franchini Collection in the Museum of Natural History and Scientific Instrumentation of Moderni has been re-evaluated. A deal of incorrectly determined and unidentified material has now been identified, and the nomenclature of correctly identified specimens has been updated to conform to modern usage. The collection now includes- 34 species, almost all from Somalia or Libia.

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A total of 302 specimens of amphibians and reptiles were sampled from Al-Arish town and four stations around it during 12 months period of study from January to December, 1988. 21 Species belonging to 11 famillies were occurred in the area comprising; one toad: Bufo viridis., 2 marine turtles; Caretta caretta and Chelonia mydas and other 18 terrestrial reptilian species. Acanthodactylus scutellatus was the most dominant cursorial species found in all sand dunes of the mean area in all the year seasons constituting about 30% of the total capture. Mabuya vittata was firstly recorded in Sinai. Six reptilian species were appended to the fauna of Al-Arish area, they are Agama stellio vulgaris, Ptyodactylus hasselquistii guttatus; Lytorhynchus diadema; Psammophìs schokari; Caretta caretta and Chelonia mydas. The highest catch number of individuals occurred in station 1 (82 specimens) while the lowest number was in station 5 (15 specimens). Seasonal distribution indicated that the highest catch number occurred during spring (87 specimens) while the lowest crop occurredin winter (47 specimens).

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Acanthodactylus scutellatus fand sich in weichsandigen Halbwüstengebieten, die am Fundort eine Vegetationsbedeckung am Boden von durchschnittlich 32,9 % (Bereich: 10-90 %) aufwies. Die Eidechsen hielten sich bevorzugt in der nähreren Umgebung von Büschen auf (x = 19,4 cm; Bereich: 0-62 cm). Die Aktivität begann etwa viereinhalb Stunden nach Sonnenaufgang und konnte während des Untersuchungszeitraums vom 31.März bis 15. April 2000 aufgrund ungünstiger meteorologischer Bedingungen nur Vormittags und Mittags festgestellt werden. Alle zwölf beobachteten A. scutellatus wiesen keine Schwanzverletzung auf. Die Laufstrecke betrug beim ersten Fluchtversuch durchschnittlich 162,5 cm (Bereich: 52-280 cm). Nach der Flucht verließ sich die Art zuerst auf Tarnung, setzte die Flucht erst bei weiterer Bedrohung fort und flüchtete nicht in Baue. Nach dem Fang wehrten sich die Eidechsen mit den Defensivverhaltensweisen: Körperwinden, Beißen, Schwanzschlängeln und Maulaufsperren.

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n this study the Check list lizards of Iraq were investigated. by reviewing the old and new data as well as carrying out field work and study of material in the Natural history Museum of Iraq as well as many departments and colleges in various universities, are discussed.Further, various relevant websites in the Internet specialized lizards. I found in this study 7 families, 27 genera and 50 species distribution in the different parts of Iraq. During this study I found Asaccus saffinae (Afrasiab & Mohamad, 2009) the first time in SheraSwar Cave in the Saffine Mountain near Erbil, Kurdistan and the first record new species in Iraq and found Ptyodactylus puiseuxi (Boutan, 1893) the first time in same area . Also found Carinatogecko heteropholis(Minton, S. Anderson, and J. A. Anderson, 1970) Which is one of the endemic species in western Iran in the Erbil western Zagros foothills in Erbil. Trapelus ruderatus (Olivier, 1804) found in the central of Iraq. Cyrtopodion scaber (Heyden, 1827) Previously found in southern Iraq But recently also recorded in the center and northern Iraq. Varanus nesterovi (Bohme, Ehrlich, Milto, Orlov & Scholz, 2015) new species in the northern of Iraq. Lacerta media (Lantz & Cyren, 1758) found newly in central and northern of Iraq and Timon kurdistanicus, Apathya cappadocica (Werner, 1902) (Suchow, 1936) northern of Iraq. I note the two families were finding Previously in Iraq and they did not record any new genus and species in Iraq.

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Mitochondrial DNA sequences consisting of 645 sites from the 12S rRNA and 16S rRNA genes were used to estimate the phylogeny of 15 of the 32 species of spiny-footed lizards Acanthodactylus. The resultant tree has similarities to that produced from a differentially weighted data set of 32 morphological characters but there are also significant differences. However, combined analysis of molecular and morphological data sets produces the same tree topology as DNA sequence alone. The molecular data confirm that there are distinct eastern and western clades within Acanthodactylus, but place A. boskianus in the former while the A. scutellatus group constitutes a third clade. Species for which only morphological information is available were integrated with the combined tree to give a provisional phylogeny for 31 species. This phylogeny indicates that the ancestor of existing Acanthodactylus probably originated in south-west Asia and that North Africa was invaded by more than one lineage of the genus. It also suggests that soft aeolian sand habitats may have been independently occupied more than once. Molecular data provide independent evidence that the differential weighting of morphological characters in past analyses was appropriate.

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Colorful tails that become cryptic during ontogeny are found in diverse taxa. Nevertheless, the evolutionary bases for this change remain debated. Recent work suggests that colorful tails, deflective displays, and striped patterns may represent antipredator mechanisms used by immature lizards to compensate for being more active and hence more vulnerable to predation (increased movement hypothesis, IMH). I challenged the generality of IMH by comparing foraging behavior and frequency of tail displays across five Acanthodactylus lizards that vary in fundamental life history traits, before and after the tail changed color. As these species underwent changes in tail coloration, they congruently adopted less risky behaviors and reduced the frequencies of tail displays. Contrary to expectation, in two species, the hatchling risky behavior resulted not from increased movements but from longer stay in exposed microhabitats. I suggest that colorful tails and deflective tail displays are synergistic antipredator mechanisms neonates use to minimize the fitness consequences of using various risky behaviors rather than increased movement alone.

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The evolutionary diversification of many terrestrial vertebrate groups is strongly linked to climatic events in the Cenozoic, the period from 65 Million years ago to today when modern animals first appeared. I investigated the effects of Cenozoic climate change on the taxonomic and morphological diversification of the Old World lizard family Lacertidae, with particular emphasis on the African radiation. African lacertids exhibit an unusual pattern of diversification, in which their highest species richness occurs in deserts north and south of the equator, despite being spread throughout the continent. This disparity is particularly surprising given that desert lacertids are thought to be evolutionarily younger than their mesic-dwelling relatives, suggesting increased diversification rates in arid habitats. To identify the evolutionary factors underlying this pattern, I use a combination of phylogenetic, morphological and ecological techniques. In Chapter 1, I apply Bayesian methods and fossil-based calibrations to molecular sequence data to construct a time-calibrated phylogeny for Lacertidae. I estimate that the family arose in the early Cenozoic, with the majority of their African radiation occurring in the Eocene and Oligocene. In Chapter 2, I describe changes in lacertid body shape across biomes and substrates, and find widespread morphological convergence in similar habitat types. I suggest that in addition to foraging demands, fluctuating and extreme climatic conditions, largely driven by precipitation and temperature, contribute to morphological convergence across independent arid-dwelling clades. Finally, I test if ancestral transitions in ecology, morphology, and rates of diversification temporally coincide with paleoclimatic events in the Cenozoic. I use High Resolution X-ray Computed Tomography to characterize changes in the skull related to life in arid habitats, and apply maximum likelihood methods to test if the origins of those traits temporally coincide with significant shifts in habitat, diversification rates and climatic changes. My results show that African lacertids experienced three major peaks in diversification, accompanied by the evolution of suites of arid-adapted morphological traits. These changes coincide with climatic shifts in Africa, including the transition from closed forests to open grasslands and savanna in the late Oligocene, prior to the peak temperatures of the mid-Miocene Climatic Optimum, and following the formation of the Benguela current leading to hyper-aridity in southern Africa. I conclude that deserts are important centers for reptile evolution, but that expected changes in climate due to global warming may outpace the ability of arid-dwelling species to adapt and persist in the future.

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A total of 23 herpetofaunal species, including 2 frogs, 15 lizards, 5 snakes and one tortoise were reported from Nalut, Al-Jomayyel and Wazen provinces in Libya during the period November 2003- June 2004. Of these, 2 frogs and 16 reptile species were added to Nalut herpetofauna. This study confirms the occurrence of Scincopus fasciatus in Libya (Sindaco, 1995) and suggests the prevalence of Uromastyx acanthinura in the Libyan west. In contrast, some species such as Mesalina rubropunctata was rare in western Libya.

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The herpetofauna of southwestern Libya has been surveyed during 2005- 2006. Overall, two amphibian and 18 reptile species were found; of these, 16 reptile species are reported for the first time for Morzoq Province and one lizard, Tarentola mauritanica, for Sabha Province.

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The life and work of the Alsatian Louis Amédée Lantz (1886-1953), a pioneer of European herpetology. A trained and professional research-chemist, the Alsatian Louis Amédée Lantz was an active and particularly dynamic herpetologist. His residence of nearly twelve years in Russia enabled him to make several field trips to regions such as the Caucasus and Iran. He always carried with him a home made telescopic net that he used to catch lizards. That net became symbolic of Lantz for most people around him. He realized significant herpetological collections mainly deposited in the Museum of the Zoology Institute of the Russian Academy of Sciences in St. Petersburg. Soon after the Russian Revolution in 1917, he had to leave the country and stayed for a few years in France before joining England. During this period, Lantz visited the French Pyrenees and the Mediterranean border (Hyeres Islands, Bandol), enabling him to discover for the first time oviparous populations of common lizard and also to describe a new species of lizard from the French Pyrenees. Lantz is also at the origin of the discovery of unisexual reproduction by parthenogenesis in reptiles. His collaboration with the Swedish amateur herpetologist Otto Cyrén, whom he met through the German herpetologist Willy Wolterstorff, was particularly successful throughout his career. Lantz died at the age of 66 years, in Switzerland, as he was about to join the team of herpetologists at the Natural History Museum in Paris.

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Femoral glands are holocrine structures that produce compounds used by lizards as peromones. Few studies have investigated the morphology and ultrastructure of these glands. We chose a closely related species pair from a lizard family having femoral glands in male and female of both species to illustrate comparative morphology and ultrastructure and their implications for the mechanism of secretion dispersal to the environment. We also aimed to test whether the structure and mechanism of secretion production differ between related species. In addition, we sought to gain a better understanding of the holocrine mechanism of secretion. Femoral glands of selected sympatric lacertid species, Acanthodactylus boskianus and A. scutellatus were studied comparatively using light microscopy, scanning electron microscopy (SEM), and transmission electron microscopy (TEM). SEM revealed both interspecific and sexual variation in the morphology of the glandular pores. The external morphology suggests the mechanism of the secretion deposition where the convex part of pore-carrying scale is probably used to partition the secretory plug. Histology shows the epithelial cells of the gland duct as an extension of the epidermis with its covering keratin. The glandular acini are composed of germinal and secretory cells. The latter undergo four different stages of differentiation, from the beginning of the formation of secretory granules, through the accumulation of these granules, disintegration and formation of the secretory plug, which protrudes externally. The study considers the sequence of holocrine secretion development, and explains in part how such secretions are deposited on the substrate. Sexual differences at the external morphology level were more evident than interspecific differences.

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Appearance und keeping of Acanthodactylus scutellatus are described.

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Aim To map and assess the richness patterns of reptiles (and included groups: amphisbaenians, crocodiles, lizards, snakes and turtles) in Africa, quantify the overlap in species richness of reptiles (and included groups) with the other terrestrial vertebrate classes, investigate the environmental correlates underlying these patterns, and evaluate the role of range size on richness patterns. Location Africa. Methods We assembled a data set of distributions of all African reptile species. We tested the spatial congruence of reptile richness with that of amphibians, birds and mammals. We further tested the relative importance of temperature, precipitation, elevation range and net primary productivity for species richness over two spatial scales (ecoregions and 1° grids). We arranged reptile and vertebrate groups into range-size quartiles in order to evaluate the role of range size in producing richness patterns. Results Reptile, amphibian, bird and mammal richness are largely congruent (r = 0.79–0.86) and respond similarly to environmental variables (mainly productivity and precipitation). Ecoregion size accounts for more variation in the richness of reptiles than in that of other groups. Lizard distributions are distinct with several areas of high species richness where other vertebrate groups (including snakes) are species-poor, especially in arid ecoregions. Habitat heterogeneity is the best predictor of narrow-ranging species, but remains relatively important in explaining lizard richness even for species with large range sizes. Main conclusions Reptile richness varies with similar environmental variables as the other vertebrates in Africa, reflecting the disproportionate influence of snakes on reptile richness, a result of their large ranges. Richness gradients of narrow-ranged vertebrates differ from those of widespread taxa, which may demonstrate different centres of endemism for reptile subclades in Africa. Lizard richness varies mostly with habitat heterogeneity independent of range size, which suggests that the difference in response of lizards is due to their ecological characteristics. These results, over two spatial scales and multiple range-size quartiles, allow us to reliably interpret the influence of environmental variables on patterns of reptile richness and congruency.

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Geological and paleoclimatic events are two main forces driving evolutionary processes in nature. These are poorly studied phenomena in North Africa, despite its great diversity of habitats, heterogeneous landscapes, and complex climatic and geological histories. Modern biodiversity patterns of the Sahara and the adjacent arid Sahel likely resulted from strong oscillations in climate and land-cover. Acanthodactylus scutellatus species group comprises important elements of the herpetofauna of arid ecosystems in North Africa, and well adapted to xeric conditions. Despite their remarkable diversity, the taxonomy within the complex is controversial, and with the exception of morphological data, little is known about these organisms. Observations of morphologically intermediate individuals in sympatry areas suggested hybridization between taxa. The present study aims to infer: 1) phylogenetic relationships within this group and identify major lineages; and 2) contemporary gene flow in a contact zone in Mauritania. Phylogenetic analyses were based on 466 specimens that were sequenced for both 12S and Cyt-b mitochondrial genes (756 total bp), and for the C-mos nuclear gene (513 total bp). A total of 208 individuals of the contact zone were genotyped for 15 microsatellites. Our results show that recovered major lineages do not match with current systematics, suggesting that taxonomy and systematics need revision. Genotyping analyses confirmedthe historical lineages found in thestudied contact zone and show absence of gene flow between them, with no hybrids detected despite the large sampling and broad geographic coverage. Lack of observed gene flow raises questions aboutthe putative role ofreproductive barriersandhabitatselectionin preventing admixture. Finally, the molecular tools applied allowed for insights on the species boundaries, relationships, history and diversity of this group, in addition to contributing to the knowledge about gene flow in the Sahara-Sahel.

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Background: Spiny-footed lizards constitute a diverse but scarcely studied genus. Microsatellite markers would help increasing the knowledge about species boundaries, patterns of genetic diversity and structure, and gene flow dynamics. We developed a set of 22 polymorphic microsatellite loci for cross-species amplification in three taxa belonging to the Acanthodactylus scutellatus species group, A. aureus, A. dumerili/A. senegalensis and A. longipes, and tested the same markers in two other members of the group, A. scutellatus and A. taghitensis. Results: Ampliications in A. aureus, A. longipes and A. dumerili/A. senegalensis were successful, with markers exhibiting a number of alleles varying between 1 and 19. Expected and observed heterozygosity ranged, respectively, between 0.046–0.893 and 0.048–1.000. Moreover, 17 and 16 loci were successfully amplified in A. scutellatus and A. taghitensis, respectively. Conclusion: These markers are provided as reliable genetic tools to use in future evolutionary, behavioural and conservation studies involving species from the A. scutellatus group.

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The checklist is based primarily on extensive collections made by the United States Naval Medical Research Unit No. 3 (NAMRU-3) in Egypt. Forms listed are those that are known or expected to occur in Egypt (including Sinai), and those that have been reported from Egypt without further verification. The systematic lists contain original citations, references to major faunal works, and the most recent reviews of each particular group. From the 3.424 specimens obtained, adequate distributional data are now available for most forms in Egypt. Maps showing collecting localities for each species are also presented for use in future sympatric and ecological studies.

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The family Lacertidae encompasses more than 250 species distributed in the Palearctis, Ethiopis and Orientalis. Lacertids have been subjected in the past to several morphological and molecular studies to establish their phylogeny. However, the problems of convergent adaptation in morphology and of excessively variable molecular markers have hampered the establishment of well supported deeper phylogenetic relationships. Particularly the adaptations to xeric environments have often been used to establish a scenario for the origin and radiation of major lineages within lacertids. Here we present a molecular phylogenetic study based on two nuclear marker genes and representatives of 37 lacertid genera and distinct species groups (as in the case of the collective genus Lacerta). Roughly 1600 bp of the nuclear rag1 and c-mos genes were sequenced and analyzed. While the results provide good support to the hitherto suggested main subfamilies of Gallotiinae (Gallotia and Psammodromus), Eremiainae and Lacertinae [Harris, D.J., Arnold, E.N., Thomas, R.H., 1998. Relationships of lacertid lizards (Reptilia: Lacertidae) estimated from mitochondrial DNA sequences and morphology. Proc. R. Soc. Lond. B 265, 1939–1948], they also suggest unexpected relationships. In particular, the oriental genus Takydromus, previously considered the sister-group to the three subfamilies, is nested within Lacertinae. Moreover, the genera within the Eremiainae are further divided into two groups, roughly corresponding to their respective geographical distributions in the Ethiopian and the Saharo-Eurasian ranges. The results support an independent origin of adaptations to xeric conditions in different subfamilies. The relationships within the subfamily Lacertinae could not be resolved with the markers used. The species groups of the collective genus Lacerta show a bush-like topology in the inferred Bayesian tree, suggesting rapid radiation. The composition of the subfamilies Eremiainae and Lacertinae as well as their phylogeography are discussed.

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Der Verfasser besuchte Tunesien Anfang April 1978 und berichtet von den Arten, die er da vorfand. Chalcides ocellatus und Tarentola mauritanica wurden häufig beobachtet, besonders in Sousse. Ertaunliche Mengen von mMauremys caspica leprosa wurden in dem kleinen Fluss ´Oued Hamdoun`bei Sousse gesehen, sie wurden aber auch in Kairouan und Gabès anagetroffen. Natrix maura wurde in Sousse und Kairouan immer im oder beim Wasser gesehen, oft ist dieses Wasser hier brackig. Zum Schluss gibt der Verfasser einen Determinationsschlüssel zu den tunesischen Amphibien-, Eidechsen- und Schildkrötenarten mit wissenscjaftlichen, französischen, niederländischen und manchmal auch arabischen Namen.

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Aim Body size is instrumental in influencing animal physiology, morphology, ecology and evolution, as well as extinction risk. I examine several hypotheses regarding the influence of body size on lizard evolution and extinction risk, assessing whether body size influences, or is influenced by, species richness, herbivory, island dwelling and extinction risk. Location World-wide. Methods I used literature data and measurements of museum and live specimens to estimate lizard body size distributions. Results I obtained body size data for 99% of the world`s lizard species. The body size–frequency distribution is highly modal and right skewed and similar distributions characterize most lizard families and lizard assemblages across biogeographical realms. There is a strong negative correlation between mean body size within families and species richness. Herbivorous lizards are larger than omnivorous and carnivorous ones, and aquatic lizards are larger than non-aquatic species. Diurnal activity is associated with small body size. Insular lizards tend towards both extremes of the size spectrum. Extinction risk increases with body size of species for which risk has been assessed. Main conclusions Small size seems to promote fast diversification of disparate body plans. The absence of mammalian predators allows insular lizards to attain larger body sizes by means of release from predation and allows them to evolve into the top predator niche. Island living also promotes a high frequency of herbivory, which is also associated with large size. Aquatic and nocturnal lizards probably evolve large size because of thermal constraints. The association between large size and high extinction risk, however, probably reflects a bias in the species in which risk has been studied.

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Aim Temperature influences most components of animal ecology and life history – but what kind of temperature? Physiologists usually examine the influence of body temperatures, while biogeographers and macroecologists tend to focus on environmental temperatures. We aim to examine the relationship between these two measures, to determine the factors that affect lizard body temperatures and to test the effect of both temperature measures on lizard life history. Location World-wide. Methods We used a large (861 species) global dataset of lizard body temperatures, and the mean annual temperatures across their geographic ranges to examine the relationships between body and mean annual temperatures.We then examined factors influencing body temperatures, and tested for the influence of both on ecological and life-history traits while accounting for the influence of shared ancestry. Results Body temperatures and mean annual temperatures are uncorrelated. However, accounting for activity time (nocturnal species have low body temperatures), use of space (fossorial and semi-aquatic species are ‘colder’), insularity (mainland species are ‘hotter’) and phylogeny, the two temperatures are positively correlated. High body temperatures are only associated with larger hatchlings and increased rates of biomass production. Annual temperatures are positively correlated with clutch frequency and annual longevity, and negatively correlated with clutch size, age at first reproduction and longevity. Main conclusions Lizards with low body temperatures do not seem to have ‘slower’ life-history attributes than species with high body temperatures. The longer seasons prevalent in warm regions, and physiological processes that operate while lizards are inactive (but warm enough), make environmental temperatures better predictors of lizard life-history variation than body temperatures. This surprisingly greater effect of environmental temperatures on lizard life histories hints that global warming may have a profound influence on lizard ecology and evolution.

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Faunal lists are important tools in ecology, biogeography, and conservation planning. Such lists can identify gaps in our knowledge of the distribution and taxonomy of regional faunas, and highlight issues needing further study. We present an up to date list of all land vertebrates occurring in Israel. We identify 786 species, of which 551 are birds, 130 are mammals, 97 are reptiles and eight are amphibians. Of these 369 species breed in Israel (including reintroductions), 199 (mostly birds) are regular visitors and 182 are accidental. Fourteen other species are invasive, and 22 species are extinct. We identify issues with the taxonomy and status of several species, and note recent developments in our understanding the Israeli land vertebrate fauna.

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The authors present an actualized and commented list of the amphibia and reptilia species noted in Morocco. The changes witch happened during the 16years after the last checklist established by BoNS(1972) are discussed. These are new additions (species recently discovered in Morocco and new taxa for Science, sorne of witch resulting from systematic modifications of other species or subspecies) and changes of names (new combinations) or status. Problems concerning the exact delimitation of several species are discussed, insisting particularly on the most conflictual groups (e.g. Chalcides, Aoenthodactylus). Thus we think that the number of species in the present checklist is probably surestimated. Taking in account these problems, we must consider this inventory as provisional, till clearing up the several questions still in suspense.

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Small samples of Acanthodactylus lizards were collected throughout the range of both A. pardalis and A. scutellatus species groups in Morocco. A selected set of external characters was analyzed in an attempt to discriminate the species currently recognized within these groups. The analysis shows that there are severe difficulties in accurately identifying different species in the A. pardalis complex, and only A. aureus and, perhaps, A. dumerili can be clearly separated in the A. scutellatus complex. Trends of changes in the character states involved sugest a pattern of irregular (non-clinal) variation at the micro and macrogeographic scales, precluding the accurate identification of most populations and obscuring the phylogenetic relationships within species groups in this area.

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Patterns of space use in the four sand lizard (Acanthodactylus) species groups living in Morocco (A. erythrurus, A. boskianus, A. pardalis and A. scutellatus) have been analysed. The use of space has been described using 16 environmental variables recorded in 82 plots situated throughout the study area. A principal component analysis was used to report the relationships between variables and plots. Univariate and multivariate (discriminant) analyses were used to describe specific patterns of space use and interspecific differences among lizards. The species richness observed was much lower than expected from the distribution ranges on a regional scale

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The herpetofauna of Wadi El Gemal National Park, Eastern Desert, Egypt currently includes 28 reptile species. Three large wadies, Wadi El Gemal, Wadi Abu Ghusoun and Wadi Sartout, were observed as a model of the spe- cies composition within the national park. Species assemblages, taxonomic and ecological diversity, and the biogeographical affinities of reptiles in the specific environment of the hyperarid desert are discussed.

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Jordan has a very diversified morphology, which is reflected also in the diversity of its herpetofauna. A total 90 amphibian and reptilian species is known to inhabit Jordan. Of those three are amphibians, with the fourth species most probably already extinct, 47 are lizard species, 35 are snake species and five turtle species. The amphibians are represented by three different families, lizards and snakes both by seven families and turtles by four families. The distribution, ecology and systematics for most species are given.

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There are five terrestrial biomes found in Palearctic realm of Iraq: Temperate broadleaf and mixed forests; Temperate grasslands, Savanas and shrublands; Flooded grasslands and Savannas; Mediterranean forests, woodlands and scrub; deserts and xeric shrublands. The presence of these ecozones resulted in a considerable heterogeneity of the herpetofauna of Iraq. With considering lizards fauna, we collected 400 lizard specimens that classified into 18 species, 11genera and five families, were distributed throughout central and southern Iraq and their zoogeographical affinities about: 44.44% Palearictic, 33.33% Arabian and 22.22% Saharo-Sindian.

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Through the kindness of Dr. O. Kodym, the National Museum (Nat. Hist.), Prague has obtained a small collection of reptiles from Libya. The collection comprises a total of 15 specimens of eleven reptile species collected in the surroundings of the town of Agedabia (30`45` N, 20`18` E ; SW Cyrenaica). Besides rather common North African reptile species, the collection also includes one specimen of a snake of genus Lytorhynchus. The specimen corresponds to the taxon Lytorhynchus kennedyi K. SCHMIDT, 1939, reported so far only from the Near East. This paper presents a brief description of this specimen and a list of the other reptile species contained in the collection. The nomenclaturel status of L. kennedyi is discussed.

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In the present investigation, macroscopic sarcocysts of Sarcocystis acanthocolubri were observed in muscles of 42 (4.3%) out of 975 Acanthodactylus sp. lizards collected from different geographical areas in Egypt. The infection rate was 6.4% in Acanthodactylus boskianus, 2.1% in Acanthodactylus sculentus, and 5% in Acanthodactylus paradalis. The highest infection rate was recorded in the lizards captured from Baltem (10% in A. boskianus and 8% in A. paradalis). The infection rate was usually higher in females (7.4%) than in males (3.8%). Moreover, the highest infection rate was recorded in summer (7.53%), autumn (3.57%), and spring (3.11%), and the lowest was recorded in winter (0.91%). Also, old animals had higher infection rates (10.8%) than young ones (0–2.7%). Macrocysts measured 0.95×10.12 mm. Both macroscopic and microscopic sarcocysts were enclosed only by a primary cyst wall, which had many finger-like, stalkless, and nonbranched protrusions giving it a striated appearance. The primary cyst wall measured 3.9 μm. A dark granulated ground substance was found directly underneath the protrusions and is extended interiorly dividing the cyst cavity into many compartments containing the parasites (metrocytes and merozoites). Metrocytes were found directly under the ground substance and usually multiply asexually by endodyogeny producing two merozoites from each metrocyte. Both metrocytes and merozoites had the apical complex structures characteristic to the genus Sarcocystis. Transmission experiments with three snake species indicated that the snake Spalerosophis diadema is the proper final host belonging to the family Colubridae. The prepatent period was 16 days, while the patent period was 35 days. The results obtained from the present investigation revealed that this is a new species which was named Sarcocystis acanthocolubri.

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The diet of an Algerian population of Acanthodactyle was studied with the aims of exploring: the variation in diet among males and females and between the habitats in particular between the palm grove and the erg. The study of the diet of lizard Acanthodactylus scutellatus, was realized in the region of the Souf, which is located in the South East to Algeria. The analyzes of the stomach contents of the captured individuals made it possible to measure the relative abundance of the prey consumed. Indeed, the diet was composed of the hymenoptera with a percentage of 38.4%, Homoptera with 30.4%, of the Coleoptera with 12.2%, Lepidoptera with 6%, of Diptera with 5.6%, the Dermoptera and the Collembola with 0.4%, including, Arachnida and the plants. The present study revealed that males consume much of the hymenoptera than the females which prefers Homoptera. So the diet varies according to the sex (males and females) and according to the habitats (Palm grove and the erg). So, there exist relations between qualities, quantities of prey and the size of the individuals of Acanthodactylus scutellatus.

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The present study was based on the observations and captures of reptiles in the Northern Algerian Sahara (2011-2013). The studied habitats were the erg (sand dunes), palm grove, reg, Sebkha, and urban sites. We have identified 30 species (20 Saurians, 9 Ophidians and one Testudines) these species are classified into two orders (Anura and Squamata), 12 families and 22 different genera. Among the identified species, 7 protected species in Algeria and 5 species endemic to the Mediterranean. A total of 93.3% (28 species) are assessed as Least Concern and one species was considered to be Data Deficient (Scincopus fasciatus). One species is listed as near threatened (Uromastix acanthinurus). The highest species richness was noticed in the palm groves with 19 species as well as the Shannon diversity index= 3.35. The evenness is at its highest in the sebkha and the urban site with 0.9 and 0.86. The correspondence factorial analysis showed that some species were characteristic of habitats such as Tarentola neglecta and Tarentola deserti which are a specific species of the urban sites and the palm groves, while Scincus scincus was a specific species of the Erg. The generalized linear model showed that the geographic coordinate, spatiotemporal factors and human activity have significant effect on the distribution of reptiles.

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The spatial and seasonal variations in amphibian and reptile diversity were studied in different biotopes (lowlands, desert pavements “Reg,” Sabkhas “salt lakes,” date palm groves, wadis, and urban sites) at the Algerian Sahara Desert. No prior research has explored the connection between the distribution of reptiles and amphibians in Algeria’s Sahara and the environmental diversity of biotopes and landscapes. This study aimed to address this significant knowledge gap by investigating the relationships between Saharan habitats and landscapes and their impact on herpetofaunal presence, abundance, and diversity. The diversity of amphibians and reptiles was assessed based on quantitative data of species captures using nonparametric diversity indices, species richness accumulation curves, and similarity analysis. At the Region of Oued Righ (Northern Sahara Desert), we identified 3 amphibians, 19 lizards, and 10 ophidian species. These 32 species (approximately 30% of the Algerian herpetofauna) were classified into 2 orders (Anura and Squamata), 15 families, and 23 different genera.The study area included 8 protected species in Algeria and 9 endemic species to the Mediterranean region, including 1 amphibian and 7 species of reptiles. Acanthodactylus dumerilii was the most abundant species (20.5% of the total), whereas Chalcides ocellatus occurred in 32.9% of specimens. The highest values of species richness were recorded in palm groves with 22 species and Shannon’s diversity index (H’) was 3.5,whereas the lowest values were obtained in Sabkhas (5 species) and urban sites (7 species).The number of individuals experienced significant variations between study biotopes and seasons. Overall, species richness estimators (Chao2 and Jackknife1) revealed that the current survey achieved 90% of inventory completeness. Estimates and interpolations of species richness showed higher values in urban sites, palm groves, desert pavements, and wadis compared to Sabkhas and lowlands where completeness ranged between 90% and 100%. The analysis of similarity indicated low similarity values (<50%) between biotopes studied. The highest similarities were noted between the mesic biotopes (Sabkhas, wadis, and palm groves), the xeric and undisturbed biotopes (desert pavements and lowlands), whereas urban sites showed a distinct herpetofaunal community that was completely different of that recorded in Sabkhas, wadis, and lowlands.

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Un découpage hiérarchisé du territoire tunisien en quatre domaines zoogéographiques a été réalisé à partir de la composition spécifique en Lacertidés de 25 secteurs correspondant aux différentes régions naturelles du pays. La délimitation, les caractéristiques faunistiques, les affinités et l`origine biogéographique du peuplement en Lacertidés de ces quatre entités, sont analysées et discutées.

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The distribution areas of the 14 species of Lacertids in Tunisia are mapped, using our 265 field survey stations scattered all over the country and surveyed from 1974 to 1995. Biotops characteristics are reported. The respective contributions of ecological factors, such as climate, substrate, vegetation overlapping level, interactions between species (competitive exclusion or, on the reverse, syntopic coexistence) are analyzed and graded.

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Each of die 25 natural regions in Tunisia harbour from I to 9 Lacerlids among the 14 species surveyed in this country. The richest regions are the South-western pari of the Tunisian Central Range and the Dhahars mountains in Southern Tunisia. They are ranging between lower semi-arid and upper saharian. In the sandy, lower saharian Far-south, only one species occurs. Geographie variation of the specific diversity and structure of Lacertid communities arc related to bioelimatical affinities and zoogeographical native areas of the species. Main steps in the immigration or local differentiation of Lacertids are reported. Impacts of climatical and biological factors on Lacertid communities arc discussed.

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A new taxonomic checklist is established for the Amphibians and “Reptiles” of Tunisia. In addition to international zoological scientific names, a French scientific name is attributed to each taxon. The Tunisian herpetofauna presently contains seven species of Amphibians and 62 of “Reptiles”.

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This is the first comprehensive review of the reptiles of Mauritania. It includes distributional information and comments. Mauritania harbors 86 species of reptiles belonging to 21 families. Among these families, Colubridae and Lacertidae are the most diverse, with 14 and 13 species respectively. Other families, such as Agamidae, Gekkonidae, Scincidae or Viperidae are also well represented. Among the 80 continental species, 47.5% are Saharan, 33.8% Afrotropical, 16.2% Sahelian and 2.5% Mediterranean. The marine turtles form another important group, with six species. Eight species are excluded from the country list because of old identification errors, there is not enough evidence of their presence or due to changes in political borders. Among the species expected to occur in Mauritania, at least nine may occur in Saharan environments, 13 in the Sahel savannah and two may have been introduced.

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Many animals display complex colour patterns that comprise several adjacent, often contrasting colour patches. Combining patches of complementary colours increases the overall conspicuousness of the complex pattern, enhancing signal detection. Therefore, selection for conspicuousness may act not only on the design of single colour patches, but also on their combination. Contrasting long- and short-wavelength colour patches are located on the ventral and lateral surfaces of many lacertid lizards. As the combination of long- and short-wavelength-based colours generates local chromatic contrast, we hypothesized that selection may favour the co-occurrence of lateral and ventral contrasting patches, resulting in complex colour patterns that maximize the overall conspicuousness of the signal. To test this hypothesis we performed a comparative phylogenetic study using a categorical colour classification based on spectral data and descriptive information on lacertid coloration collected from the literature. Our results demonstrate that conspicuous ventral (long wavelength-based) and lateral (short wavelength-based) colour patches co-occur throughout the lacertid phylogeny more often than expected by chance, especially in the subfamily Lacertini. These results suggest that selection promotes the evolution of the complex pattern rather than the acquisition of a single conspicuous colour patch, possibly due to the increased conspicuousness caused by the combination of colours with contrasting spectral properties.

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Some basic aspects of the ecology of five lacertid lizards inhabiting the desert area of Tafilalet, in south-eastern Morocco, are considered: Mesalina guttulata, occupying almost exclusively the hammada habitat; Mesalina olivieri, Acanthodactylus boskianus and Acanthodactylus scutellatus found on sand and bare-ground reg; and Acanthodactylus longipes, inhabiting the sand-dune habitat, the erg. Acanthodactylus scutellatus, A. boskianus, A. longipes and M. olivieri had a bimodal diel activity pattern; in M. guttulata daily activity was centred on the morning hours. All species exhibit fairly precise thermoregulation with a strong relation between body and substratum temperature, particularly for species occupying softer substrata. Mesalina guttulata had a diverse diet during both seasons observed, while in the remaining species termites and ants formed the bulk of the food. The foraging behaviour, diet and ecological characteristics of Lacertidae from the Tafilalet, especially the genus Acanthodactylus, seem to be optimal for the challenging environmental conditions of this desert area. The implications of the foraging strategy of Tafilalet`s Acanthodactylus for other species of the genus are discussed.

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Considerable attention has been given lately to the effects of habitat fragmentation and destruction on wildlife. Here, we summarize their effects on animal abundance and plant cover during a three-year study period ( 1987- 90) of the sand dunes of the coastal plain of Israel. Populations of the gray monitor Varanus griseus, the spur-thighed tortoise Testudo graeca, and the mountain gazelle Gazella gazella in the study area declined markedly and plant cover increased significantly. Habitat destruction and fragmentation, introduced animals (especially dogs and carrion crows), a continuing change in the native herbivore fauna, and blockage of wind-borne sand are all believed to be responsible for the observed changes. We recommend that small areas, unsuitable for full protection, be declared `city reserves,` to be used for educational and recreational purposes. Nature reserves need to be managed in order to maintain the existing fauna and flora.

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The reproductive ecology of Acanthodactylus scutellatus was studied in Israel. This species inhabits shifting sand dunes, with plant cover typically <10%. Juveniles emerge from June to September, go through a period of reduced activity in winter and return to full activity next spring. Large individuals (>50 mm) begin to reproduce immediately upon emergence. Smaller animals reach sexual maturity later. Average number of eggs per clutch is 2·6 (range 1-4). In captivity, females deposit one to four clutches (average 2·3) between May and June. Maximum life expectancy of A. scutellatus in the wild is 1 year only.

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Foraging strategy was observed in five species of Israeli lacertid lizards in the field. Acanthodactylus scutellatus is a sit-and-wait strategist, whereas A. boskianus, A. schreiberi, Lacerta laevis and Mesalina guttulata forage widely. However, the actual values differed from those reported by Huey and Pianka (1981) for Kalahari lacertids, possibly indicating the existence of a continuum of foraging modes. Foraging intensity (proportion of time spent moving or frequency of moves) is positively correlated to relative tail length, and negatively correlated to relative clutch mass. Additional possible correlates are discussed, and some cautionary remarks added.

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Acanthodactylus hardyi Haas, 1957 has traditionally been treated as a subspecies of the widely distributed A. scutellatus, but was recently elevated to specific rank. The occurrence of A. hardyi in Jordan was discovered very recently. Four specimens collected from Batn al Ghul and Al Hazim have the diagnostic features of A. hardyi and are therefore assigned to this taxon. This finding is considered as further proof of the validity of the taxon and of its recognition at the specific level. Ecological requirements and niche partitioning are discussed in the light of the co- occurrence of A. hardyi with A. schmidti and/or A. opheodurus.

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Algeria is situated at the crossroads between Europe and Africa. The northern part of the country is listed as an area of high biodiversity. Currently, the ecosystems (rivers, lakes, deserts, forests etc.) and the species are under more pressure than ever. The impact of humans is significant and many factors constitute a strong threat to this fauna, especially reptiles, which are the most vulnerable because of their low mobility. Thus, pollution, the drying up of wetlands and their conversion to agriculture have clearly affected the existence of many species. The herpetofauna of Algeria is one of the most diversified in the Mediterranean Basin, consisting of 104 species of which 16.98% are endemic. We suppose that the present list of reptilian fauna provided in this paper is not exhaustive and it is expected to include more species given the lack of research on reptiles in Algeria and its large area. Our dataset contains information on reptile occurrences in Algeria. The dataset is based on original research by the staff of the Laboratory of Environmental Sciences and Agroecology of Chadli Bendjedid University in Algeria. The conservation status of all recorded species is given.

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This study was carried out in El Omayed Protected Area at the Western Coastal Desert of Egypt. The present survey of the herpetofauna comprise 30 species (one amphibian species and 29 reptilian species) belonging to 25 genera and 11 families. Bufo viridis viridis was the only recorded amphibian species. From reptiles, 18 species of lizards, 9 species of snakes, and 2 species of Testudines were recorded. No endemic species were found in the study area. About half of the recorded species (43%) are threatened by different degrees and in argent need of special management; Threats to the populations of herpetofauna of the study area and conservatory recommendations were listed.

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Die vorliegende Revision betrifft die Gattung Acanthodactylus (Damilie Lacertidae), die die Trocken- und Wüstengebiete des nördlichen Afrika und des südwestlichen Asiens bewohnt, mit Randpopulationen auf der Iberischen Halbinsel und auf Zypern. Mehr als 6000 Exemplare der Gattung, aus den bedeutendsten europäischen und amerikanischen Sammlungen, wurden untersucht. Zusätzlich wurden über 450 Röntgenaufnahmen für osteologische Untersuchungen ausgewertet. Die historische Übersicht behandelt in chronologischer Reihenfolge alle Arbeiten, die sich mit der Gattung Acanthodactylus beschäftigen, mit besonderer Berücksichtigung taxonomischer Studien. Ein beigegebener Bestimmungsschlüssel ermöglicht die Determination aller Arten der Gattung. Eine Reihe äußerer (Größe und Proportionen, Pholidose, Färbung und Zeichnung) und innerer (d.h. osteologischer) Merkmale wurde im Hinblick auf ihre Variabilität untersucht. Dann wurde ein Land ausgesucht, z.B. Ägypten, aus dem eine gute Materialbasis zur Verfügung stand. Für einen bestimmten Fundort in diesem Lande wurden sodann einige Kombinationen von Merkmalszuständen ermittelt, die sich aus dem Auftreten verschiedener Arten ergaben. Derselbe Vorgang wurde sodann auf den Rest Ägyptens übertragen, und die Merkmalskombinationen stellten sich als übereinstimmend heraus; sie erlaubten dadurch eine sichere Zuordnung von Tieren zu folgen Arten: A. boskianus, A. scutellatus und A. pardalis. Durch die Ausdehnung der Untersuchung nach Westen und Osten kamen weitere Taxa hinzu. Besonderer Aufmerksamkeit wurde diesen Merkmalskombinationen im Hinblick auf sympatrisches oder allopatrisches Auftreten der betroffenen Arten gezollt, mit dem Ergebnis, daß es in einigen Fällen möglich war, abzusichern, daß es sich um Populationen derselben Art handelt. Die Gattung Acanthodactylus wurde in mehrere Artengruppen gegliedert, die sich durch engere Beziehungen ihrer Arten untereinander auszeichnen. Die erste ist die micropholis-Gruppe mit der einzigen Art A. micropholis. Sie wird als die ursprünglichste der gesamten Gattung angesehen. Eine weitere Gruppe ist die boskianus-Gruppe, mit den Arten A. boskianus und A. schreiberi. Erstere wird ausführlich analysiert im Hinblick auf ihre außerordentlich große geographische Variabilität. Die yemenicus-Gruppe besiedelt die Arabische Halbinsel und besteht aus A. yemenicus sp.n., A. masirae, A. opheodurus und A. felicis. Eine weitere Gruppe ist die tristrami-Gruppe mit den Arten A. tristrami und A. robustus. Für erstere wird die Validität der Unterart orientalis verneint, die für iracensis dagegen bejaht. In die grandis-Gruppe wird hier nur A. grandis gestellt, während A. fraseri als dessen Synonym aufgefaßt wird. Die erythrurus-Gruppe enthält A. erythrurus, A. savignyi, A. blanci, A. boueti und A. guineensis. Letzterer rangierte bislang in der Gattung Eremias, gehört aber nach den hier vorgelegten Befunden in die erythrurus-Gruppe von Acanthodactylus. In der pardalis-Gruppe sind enthalten: A. pardalis, A. bedriagai, A. maculatus, A. spinicauda und A. busacki sp.n. aus Marokko. Die scutellatus-Gruppe besteht aus A. scutellatus, A. aureus, A. dumerili und A. longipes. Die letzte Gruppe ist die cantoris-Gruppe mit den Arten A. cantoris, A. arabicus, A. schmidti, A. blanfordi, A. gongrorhynchatus und A. haasi. Eine Bibliographie über die Gattung beschließt die Arbeit. Für jede Art werden Diagnosen, Verbreitungskarten, Synonymien, Beschreibungen und Materiallisten der untersuchten Tiere sowie auch Strichzeichnungen gegeben.

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Evaluating flagship species and their potential for biological preservation and ecotourism development is a key issue for many audiences within the conservation and social fields. Despite several methods available to identify flagships, their application is often constrained in remote, poorly studied regions. Developments are needed in statistical and spatially-explicit approaches to assess species` traits influencing flagship appealing, to identify flagship fleets, and to map the location of flagship hotspots. Here, we developed a new method to identify flagship species in regions with knowledge gaps, using a two-stage statistical approach (ordination and clus- tering algorithms) to assess variable`s contribution to appealing and to group species sharing similar char- acteristics into flagship fleets. We then mapped areas concentrating the highest richness of flagships. Unique morphologies and behaviours, conservation status, endemicity, body size and weight, and feeding habits were the traits contributing the most to the flagship appealing. Nine flagship fleets were identified, from which two were the most suitable for conservation marketing and ecotourism promotion campaigns in Sahara-Sahel: Fleet A comprising 36 large-bodied species (18 mammals, 18 reptiles) and Fleet B including 70 small-bodied species (10 birds, six mammals, 54 reptiles). A total of 19 and 16 hotspots were identified for large-bodied and small-bodied flagships, respectively. The methodology was suitable to identify flagship species for conservation marketing and for developing ecotourism operations in the Sahara-Sahel, to independently assess which species` traits are re- levant for flagship appealing, and to organise fleets for multispecies-based marketing campaigns. The framework is scalable and replicable worldwide.

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Acanthodactylus is a genus of lacertid lizard, commonly referred to as fringe-fingered lizards or fringe-toed lizards. The systematics of the genus Acanthodactylus was classically based on external morphological traits, osteological characters and morphology of the hemipenes. In this study, partial sequences of 18S rRNA gene were used to estimate the relationships among three lacertide species from Egypt: Acanthodactylus boskianus, Acanthodactylus scutellatus and Acanthodactylus longipes. These data were used together with morphological information, to evaluate the relationships among these three species. DNA was extracted from the collected specimens, 988 bp fragment of 18S rRNA was amplified using universal primers and sequenced. The obtained sequences were analyzed and a phylogenetic tree was constructed. Results of analysis revealed that A. scutellatus and A. longipes form a very well supported clade with 86% bootstrap. A. boskianus was found to constitute a separate clade. The resultant tree based on DNA sequence data was similar to that produced from a differentially weighted data set of morphological characters. In conclusion, the 18S rRNA gene sequence seems to be a good marker for phylogenetic analysis of Acanthodactylus species.

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In this paper, the evolution and ecology of directional asymmetry (DA) during the developmental trajectory (DT) is compared with that of its product, morphological DA (MDA). DT and MDA are calculated for two bilateral morphological scale characters of lizards, the number of subdigital lamellae beneath the fourth toe in 10 agamid and 28 lacertid taxa, and the number of rows of ventral scales in 12 lacertid taxa. MDA, the subtraction between left and right sides (classical measure of DA), is functional in adult animals. Results confirm the hypodiesis that, in DT, the regression parameters a (constant) and b (regression slope) of counts on the right side with those on the left describe a developmental process. No phylogenetic or environmental effects were observed on a and b, but analyses considering both a and b together show non-random phyletic patterns. Independent analyses deduced the same ancestral DT in Agamidae and Lacertidae. In Lacertidae, distance between pairs of taxa in a + b (standardized values) correlates positively with die phylogenetic distance between taxa. Phyletic trends in MDA are indirect, and due to the link of MDA with a + b. The MDA of species is more dissimilar in sympatry than in allopatry. The phyletic trends suggest evolution of DT, while die association of MDA witii sympatry suggests that ecological pressures shape MDA in adult animals. Evolution of DT is independent from tiiat of its product, MDA–adaptive determinism defines the result of, but not the mechanistic process of, development. Deterministic environmental processes define MDA, and deterministic evolutionary processes define the interactive result of a and b, but not each separately. According to circumstances, different DTs produce similar or different MDA, and a particular DT can produce different MDAs.

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Acanthodactylus lizards are among the most diverse and widespread diurnal reptiles in the arid regions spanning from North Africa across to western India. Acanthodactylus constitutes the most species-rich genus in the family Lacertidae, with over 40 recognized species inhabiting a wide variety of dry habitats. The genus has seldom undergone taxonomic revisions, and although there are a number of described species and species-groups, their boundaries as well as their interspecific relationships are largely unresolved. We constructed a multilocus phylogeny, combining data from two mitochondrial (12S, cytb) and three nuclear (MC1R, ACM4, c-mos) markers for 302 individuals belonging to 36 known species, providing the first large-scale time-calibrated molecular phylogeny of the genus. We evaluated phylogenetic relationships between and within species-groups, and assessed Acanthodactylus biogeography across its known range. Acanthodactylus cladogenesis is estimated to have originated in Africa due to vicariance and dispersal events from the Oligocene onwards. Radiation started with the separation into three clades: the Western and scutellatus clades largely distributed in North Africa, and the Eastern clade occurring mostly from Arabia to south-west Asia. Most Acanthodactylus species diverged during the Miocene, possibly as a result of regional geological instability and climatic changes. We support most of the current taxonomic classifications and phylogenetic relationships, and provide genetic validity for most species. We reveal a new distinct blanfordii species-group, suggest new phylogenetic positions (A. hardyi, A. masirae), and synonymize several species and subspecies (A. lineomaculatus, A. boskianus khattensis and A. b. nigeriensis) with their phylogenetically closely-related species. We recommend a thorough systematic revision of taxa exhibiting high levels of intraspecific variability as well as clear evidence of phylogenetic complexity such as A. guineensis, A. grandis, A. dumerilii, and A. senegalensis and the pardalis and erythrurus species-groups.

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We tested the hypothesis that an evolutionary trade-off exists between the capacity to run on level terrain and the ability to climb inclined structures in lacertid lizards. Biomechanical and physiological models of lizard locomotor performance suggest that the morphological design requirements of a ground-dwelling vs. scansorial life style are difficult to reconcile. This conflict is thought to preclude simultaneous evolution of maximal locomotor performance on level and inclined terrain. This notion has been corroborated by comparative studies on lizard species from other groups (Anolis, Chamaeleo, Sceloporus), but is not supported by our data on 13 species from the family Lacertidae. We found no indication of a negative association between maximal sprint speed of lizards over a level racetrack (indicative of ground-dwelling locomotor performance), on an inclined stony surface (indicative of climbing performance over rock faces) and inclined mesh surface (indicative of clambering performance among vegetation). Moreover, morphological characteristics associated with fast sprinting capacities (e.g. long hind limbs) apparently enhance, rather than hinder climbing and clambering performance. We conclude that in our sample of lacertid lizards, the evolution of fast sprinting capacity on level terrain has not inflicted major restrictions on climbing and clambering performance.

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The aim of this study was to determine if divergence in habitat use among lacertid lizards is paralleled by morphological differentiation. For 35 lacertid species, we measured body, head and limb dimensions. Habitat use was inferred from the literature: ground-dwelling on open terrain, ground-dwelling in vegetated areas, shrub-climbing, tree-climbing, saxicolous (i.e. rock-climbing). Traditional (i.e. non-phylogenetic) statistical analyses suggest morphological differences among species groups with different habitat use. Ground-dwelling species from open habitats tend to have longer femurs, tibiae and humeri (relative to body length) than other groups. Cursorial (i.e. level-running) species have relatively high heads and trunks compared to climbing species. These differences follow biomechanical predictions and it is tempting to consider tham as adaptations to habitat use. However, phylogenetic analyses of the data fail to establish a clear relationship between habitat use and morphology in the data set considered. There is a weak indication that the differences in head and trunk height have evolved as an adaptation to different habitat use, but the differences in relative limb dimensions among species groups with different habitat use vanish. Either adaptation of limb dimensions to habitat use has not occurred in lacertid lizards, or our methods are unable to demonstrate such an adaptation. We show that uncertainties in the topology of the phylogenetic tree used are unlikely to influence the outcome of our study. We also address the fact that habitat use is often similar in different branches of the phylogenetic tree, and the consequences this may have for the power of our statistical analyses.

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Microhabitat use and antipredator behaviour (i.e. behavioural response to a bird model and refuge microhabitat) was measured in an experimental set-up for 11 lacertid lizard species. Additionally, locomotor performance (sprint speed, climbing and clambering speed, manoeuvrability and endurance) of the same species was quantified. The results showed considerable interspecific variation in microhabitat use, behavioural response and choice of refuge microhabitat. Part of that variation could be linked to differences in locomotor capacity. Species that frequently made use of open microhabitats tended to be fast sprinters, but had limited endurance. The behavioural data suggest these species will not start running before the predator is close at hand, and thus having high sprint capacities might be more beneficial than great endurance. Species that spent most of their time on vertical elements appeared to be fast climbers. As such microhabitats tend to be quite exposed, lizards living there are conspicuous to predators and being able to escape fast seems relevant. Contrary to our expectations, species mostly observed in the vegetated microhabitats did not excel in clambering capacity or manoeuvrability. Possibly, dense vegetation constitutes a safe harbour and species may no longer be under selection for locomotor speed. Behavioural response when confronted with an aerial predator was context-dependent in most species: most lizards fled more when in open or vertical microhabitats than when in densely vegetated ones. Moreover, when fleeing most species sought refuge in the vegetation. These findings support our idea that vegetated patches may constitute a safe harbour for lacertids.

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Morphological and physiological considerations suggest that sprinting ability and endurance capacity put conflicting demands on the design of an animal`s locomotor apparatus and therefore cannot be maximized simultaneously. To test this hypothesis, we correlated size-corrected maximal sprint speed and stamina of 12 species of lacertid lizards. Phylogenetically independent contrasts of sprint speed and stamina showed a significant negative relationship, giving support to the idea of an evolutionary trade-off between the two performance measures. To test the hypothesis that the trade-off is mediated by a conflict in morphological requirements, we correlated both performance traits with snout-vent length, size-corrected estimates of body mass and limb length, and relative hindlimb length (the residuals of the relationship between hind- and forelimb length). Fast-running species had hindlimbs that were long compared to their forelimbs. None of the other size or shape variables showed a significant relationship with speed or endurance. We conclude that the evolution of sprint capacity may be constrained by the need for endurance capacity and vice versa, but the design conflict underlying this trade-off has yet to be identified.

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Evolutionary changes in foraging style are often believed to require concurrent changes in a complex suite of morphological, physiological, behavioural and life-history traits. In lizards, species from families with a predominantly sit-and-wait foraging style tend to be more stocky and robust, with larger heads and mouths than species belonging to actively foraging families. Here, we test whether morphology and foraging behaviour show similar patterns of association within the family Lacertidae. We also examine the association of bite force abilities with morphology and foraging behaviour. Lacertid lizards exhibit considerable interspecific variation in foraging indices, and we found some evidence for a covariation between foraging style and body shape. However, the observed relationships are not always in line with the predictions. Also, the significance of the relationships varies with the evolutionary model used. Our results challenge the idea that foraging style is evolutionarily conservative and invariably associated with particular morphologies. It appears that the flexibility of foraging mode and its morphological correlates varies among lizard taxa.

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Aim: Hyper-arid sandy and rocky fields rank among the least biologically diverse habitats of the desert biome, yet knowledge of local biodiversity patterns is also ex tremely poor. In the Sahara Desert, palaeoclimate oscillations affected the extent of hyper-arid habitats, but it is unclear how these dynamics determined the evolution and distribution of local specialists. Herein, we assessed cryptic diversity, diversification patterns and spatial connectivity within a Sahara-widespread group of dryland adapted lizards. Location: Sahara-Sahel ecoregions. Taxon: Acanthodactylus scutellatus species group. Methods: Inter- and intraspecific phylogenetic structure, divergence times, spatial genetic patterns and cryptic diversity were assessed using nuclear and mitochondrial loci. The effects of topography and land cover on phylogeographic structure and diversity were tested with generalized linear models. Interspecific hybridization was evaluated using 11 microsatellites across the group`s major sympatry zone, predicted based on ecological niche models. Results: Species of Acanthodactylus scutellatus group exhibit Late Miocene origins, followed by extensive intraspecific divergence throughout the Pliocene. The northern Sahara worked as a major diversification hotspot, harbouring a patchwork of small ranged, divergent lineages. These lineages are parapatric or sympatric and present concordant nuclear and mitochondrial differentiation, suggesting species status. Genetic connectivity increases in southern latitudes, with wide-ranging lineages spanning from the Red Sea to the Atlantic coast. Within these potential corridors, mountain outskirts and sand fields in the Sahara interior seemingly acted as origins for recent population expansions. Genetic diversity and connectivity are favoured by terrain roughness and soft-sand cover respectively. Three species inhabit the Atlantic Sahara sympatry zone without evidence of gene flow. Main conclusions: Overlooked species-level diversity within a major specialist group of Sahara drylands exposes the recurrent knowledge shortfalls present in hyper-arid desert environments. Humidity and sandy habitat shifts triggered potential successions of population isolation and re-connectivity, which favoured cladogenesis in northern desert regions and population expansions across southern east–west corridors.

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The Yale University Prehistoric Expedition to Nubia collected zoological specimens and archeological artifacts from Egypt and the surrounding region from 1962 to 1965. A total of 2486 herpetological specimens were collected during this time, representing 51 species and 13 families. Among the herpetological specimens is a series of 1232 Chalcides ocellatus and a recently described species of spitting cobra (Naja nubiae). Because most of the collection sites are now under Lake Nasser, most specimens represent extirpated populations. Some specimens are of taxa now considered endangered species in Egypt. Although the primary purpose of the YUPEN expedition was to preserve the rich anthropological history south of Aswan, the herpetological specimens that were preserved provide a valuable temporal snapshot into the historical ecosystems that were present in Lower Egypt.

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The distribution of the Arabian desert lizard Acanthodactylus opheodurus Arnold, 1980 in the Levant is re-examined. West of Jordan it is almost limited to the ‘Arava Valley, absent from most of the Negev and from Sinai. This correction of an earlier report derives from re-identification of specimens, relying on the colour pattern difference from the syntopic sibling A. boskianus asper (Audouin, 1829). The vertebral dark stripe is simple in A. opheodurus but forked in A. boskianus. The vertebral stripe is forked but light-colored in two geographically adjacent related taxa, A. b. boskianus (Daudin, 1802) of northern Egypt and A. schreiberi syriacus Boettger, 1878 of coastal Israel.