Genetic diversity and population demography of the Chinese crocodile lizard (Shinisaurus crocodilurus) in China.

Genetic diversity and population demography of the Chinese crocodile lizard (Shinisaurus crocodilurus) in China.
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中国鳄蜥(Shinisaurus crocodilurus)的遗传多样性和种群统计

DOI:
10.1371/journal.pone.0091570
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发表时间:
2014
期刊:
影响因子:
3.7
通讯作者:
Chen J
Chen J
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Huang H;Wang H;Li L;Wu Z;Chen J

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鳄鱼是濒危物种,列入《濒危野生动植物种公约》附录II。近年来,它在中国的种群和栖息地发生了重大变化。了解该物种的遗传变异性和系统地理对于成功的保护非常重要。本研究从中国的11个野生池塘和两个圈养种群中采集了样本。我们对线粒体Cytb、部分ND6和部分tRNA-Glu进行了测序,并对10个微卫星座位进行了基因分型。我们对这些数据的分析表明,该物种的遗传变异性很低,没有因为距离而导致的强烈隔离,并且缺乏系统地理结构。根据我们的结果,中国鳄鱼两个分支之间的基本分化可能是由于珠江水系的形成造成的。我们在其中一个分支中发现了人口扩张。微卫星分析表明存在三个簇,由显著的遗传差异分开。我们发现,两个圈养种群中的大多数个体分别来自广东罗坑和广西野生源种群。
The Chinese crocodile lizard Shinisaurus crocodilurus is a critically endangered species, listed in Appendix II of CITES. Its populations and habitat in China have undergone significant changes in recent years. Understanding the genetic variability and phylogeography of this species is very important for successful conservation. In this study, samples were taken from 11 wild ponds and two captive populations in China. We sequenced mitochondrial CYTB, partial ND6, and partial tRNA-Glu and genotyped 10 microsatellite loci. Our analyses of these data showed low genetic variability, no strong isolation caused by distance, and a lack of a phylogeographic structure in this species. Based on our results, the basal divergence between two clades of S. crocodilurus in China may have been caused by the formation of the Pearl River system. We found a population expansion in one of these clades. Microsatellite analysis indicated the presence of three clusters, separated by significant genetic differences. We found that most individuals in the two captive populations were from the Luokeng (Guangdong) and Guangxi wild source populations, respectively.
DOI: 10.1093/bioinformatics/14.9.817
发表时间: 1998-01-01
期刊: BIOINFORMATICS
影响因子: 5.8
作者:
Posada, D;Crandall, KA
通讯作者: Crandall, KA
DOI: 10.1177/117693430500100003
发表时间: 2005-01-01
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发表时间: 1998-11-01
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发表时间: 2010-12-01
期刊: MOLECULAR ECOLOGY
影响因子: 4.9
作者:
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中华鳄蜥 (Shinisaurus crocodilurus) 12 个微卫星位点的分离和表征
DOI: 10.1007/s12686-012-9635-4
发表时间: 2012-09-01
影响因子: 1.1
作者:
Bei, Rongbing;Chen, Jinping;Wu, Zhengjun
通讯作者: Wu, Zhengjun