| Lacerta saxicola nairensis DAREVSKY, 1967 Lacerta raddei nairensis UZZELL & DAREVSKY 1973 Lacerta nairensis DAREVSKY 1992 Archaeolacerta (Caucasilacerta) nairensis SINDACO et al. 2000 Darevskia (raddei) nairensis ARNOLD et al. 2007 Lacerta (Darevskia) nairensis SINDACO & JEREMČENKO 2008 Darevskia nairensis ARAKELYAN et al. 2011 |
Darevsky, I.S. (1967) - Description Darevskia alpina. - In: “Rock lizards of the Caucasus: Systematics, ecology and phylogenesis of the polymorphic groups of Caucasian rock lizards of the the subgenus Archaeolacerta”: Indian Natural Sciences Documentation Center, New Delhi. 276 pp. Petrosyan, R. & Arakelyan, M. (2013) - Comparative analysis of two close related forms of lizard Darevskia “raddei” and D. “nairensis”. - In: Žagar, A. (ed.): Abstracts of the 8th International Symposium on the Lacertids of the Mediterranean Basin, 03 - 06 June 2013, Koper, Slovenia: 45. × In order to decide a disputed taxonomic rank of two close forms of rock lizards of genus Darevskia we compared form “nairensis” from the city of Yerevan in the gorge of Razdan river (1006 m above sea level) and “raddei” from a vicinity of the Geghard monastery in the gorge of Azat river (1940 m) approximately at distance of 24-25 km from each other. Morphological researches have shown their similarity: “nairensis” and “raddei” significantly differ only by number of dorsal scales (P<0.01 for both sexes) and scales between the masseteric shield and the supratemporal (P<0.01 for males and P<0.001 for females), where the number of scales of “raddei” exceed that of “nairensis”. Despite the close morphological similarity, earlier was suggested that two close forms of lizards may be reproductive isolated. Our researches have shown that terms of breeding of males and females of “nairensis” were on 7-10 days earlier than “raddei”, however this may result of different climate conditions in concerning with elevation. Our parasitological observation of blood smears have shown that two forms of lizards contain different forms of blood parasites, where “nairensis” were infected mostly by parasites identified according to their morphology as specimens of genus Karyolysus, while “raddei” were mostly infected by parasites of genus Hepatazoon, which also may result of different habitats rather than species rank differences. Godakova, S.A. & Koechagin, V.I. & Semeyanova, S.K. & Chernyavskaya, M. & Sevast`yanova, G.A. & Ryskov, A.P. (2015) - Characterization of retrotransposon Bov-B LINE reverse transcriptase gene sequences in parthenogenetic lizards Darevskia unisexualis und bisexual species D. nairensis and D. valentini. - Molecular Biology, Moscow, 49 (3): 369-372. × Cloning and sequencing of the partial reverse transcriptase gene (750 bp) of the Bov-B LINE retrotransposon have been held in parthenogenetic lizards Darevskia unisexualis and its assumed parental bisexual species D. nairensis and D. valentini. It was shown that the percentage of transcriptionally active copies of this gene, which does not contain a stop codon, is almost the same in the three species and is about 75%. The intragenomic divergence level of these sequences is low and was found to be 2.6% in D. unisexualis, 1.9% in D. nairensis, and 1.6% in D. valentini. The phylogenetic analysis shows the distribution of copies of D. unisexualis in each of the two clusters of RT sequences characteristic of D. nairensis and D. valentini. This result supports the view of the hybrid origin of D. unisexualis and does not exclude intraspecific hybridization between D. nairensis and D. valentini. Годакова С.А., Корчагин В.И., Семенова С.К., Чернявская М.М., Севастьянова Г.А., Рысков А.П. (2015) - Характеристика последовательностей гена ревертазы ретротранспозона Bov-B LINE у ящериц партеновида Darevskia unisexualis и двуполых видов D. nairensis и D. valentini. - Молекулярная биология, 49 (3): 417-421. × Клонированы и секвенированы последовательности участка гена ревертазы (750 п.н.) ретротранспозона Bov-B LINE, составляющие около двух третей его длины, у партеногенетического вида ящериц Darevskia unisexualis и двуполых видов D. nairensis и D. valentini. Показано, что доля транскрипционно активных копий этого гена, не содержащих стоп-кодонов, примерно одинакова у трех видов и составляет около 75% от числа исследованных копий. Уровень внутригеномной дивергенции всех копий невысок и составляет 2.6% у D. unisexualis, 1.9% у D. nairensis и 1.6% у D. valentini. На основании филогенетических реконструкций показано распределение копии D. unisexualis внутри каждого из двух кластеров последовательностей гена ревертазы, характерных для D. nairensis и D. valentini. Этот результат поддерживает мнение о гибридном происхождении D. unisexualis и не исключает возможности участия в этом процессе D. nairensis and D. valentini.
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