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首页> 外文期刊>Acta Herpetologica >Karyotype, chromosome structure, reproductive modalities of three Southern Eurasian populations of the common lacertid lizard, Zootoca vivipara (Jacquin, 1787)
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Karyotype, chromosome structure, reproductive modalities of three Southern Eurasian populations of the common lacertid lizard, Zootoca vivipara (Jacquin, 1787)

机译：三个南部欧亚混血蜥蜴蜥蜴（Zootoca vivipara）的三个南欧亚种群的核型，染色体结构，繁殖方式（雅克昆，1787年）

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摘要

According to a hypothesis of the evolution of viviparity the lacertid lizard Zootoca vivipara, rare relict oviparous populations of the species might occur in southern-eastern part of its distribution area. Such a hypothesis has been verified by comparing the karyotype, chromosome structure, and reproductive modality of three populations of south-eastern part of Russia, including Altai and neighbouring regions, where small territories remained isolated during the Pleistocene cooling and where Pleistocenic fossils of Z. vivipara have been found. The chromosomal study was carried out by conventional staining method and banding methods, namely C-banding and sequential staining of C-banding+ fluorochromes, CMA3 and DAPI. All studied females displayed viviparous reproductive modality and showed a karyotype of 2N = 35 acrocentric chromosomes, with a Z1Z2W sex chromosome system. Chromosome W was subtelocentric. No inter-population variability on karyotype and heterochromatin distribution and composition was observed. From the obtained data the three studied south-eastern Russian viviparous populations belong to the Russian viviparous form of Z. v. vivipara.
机译：根据胎生演化的假说，该种的蜥蜴蜥蜴Zootoca vivipara可能在其分布区域的东南部出现稀有的遗留卵生种群。通过比较俄罗斯东南部三个地区（包括阿尔泰和邻近地区）的染色体核型，染色体结构和生殖方式，证实了这一假设。在更新世的冷却过程中，这些地区的小领土仍处于孤立状态，而更新世的化石是Z.已找到vivipara。染色体的研究是通过常规的染色方法和条带方法进行的，即C条带和C条带+荧光染料，CMA3和DAPI的连续染色。所有研究的雌性均显示出胎生生殖方式，并显示2N = 35个顶体染色体的核型，并具有Z1Z2W性染色体系统。 W染色体是亚末中心的。没有观察到人群间核型，异染色质分布和组成的变异性。从获得的数据来看，三个研究过的东南俄罗斯胎生种群属于Z. v。vivipara的俄罗斯胎生形式。

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