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Genetic diversity and population structure of Schizopygopsis younghusbandi Regan in the Yarlung Tsangpo River inferred from mitochondrial DNA sequence analysis

文献类型： 外文期刊

作者： Guo, Shan-Shan 1 ; Zhang, Gui-Rong 1 ; Guo, Xiang-Zhao 1 ; Wei, Kai-Jian 1 ; Yang, Rui-Bin 1 ; Wei, Qi-Wei 3 ;

作者机构： 1.Huazhong Agr Univ, Coll Fisheries, Minist Agr, Key Lab Freshwater Anim Breeding, Wuhan 430070, Peoples R China

2.Freshwater Aquaculture Collaborat Innovat Ctr Hub, Wuhan 430070, Peoples R China

3.Chinese Acad Fishery Sci, Yangtze River Fisheries Res

关键词： Schizopygopsis younghusbandi;Genetic diversity;Population genetic structure;Cytochrome b;Control region;Tibet

期刊名称：BIOCHEMICAL SYSTEMATICS AND ECOLOGY （ 影响因子：1.381； 五年影响因子：1.351 ）

ISSN：

年卷期：

页码：

收录情况： SCI

摘要： The genetic diversity and population structure of Schizopygopsis younghusbandi from six sites in the middle reach of the Yarlung Tsangpo River were examined based on mitochondria( DNA cytochrome b (Cyt b) gene and control region (D-loop) sequences. 1141 bp of complete Cyt b sequences and 737 bp of partial D-loop sequences for 153 individuals of S. younghusbandi were obtained by using PCR amplification and sequencing. The results showed that S. younghusbandi populations had high haplotype diversity and low nucleotide diversity, and the population genetic diversity of this species was at a low level. Analysis of molecular variance revealed that most genetic variation occurred within populations, and that genetic differentiation was at low or moderate levels. The network of haplotypes based on Cyt b gene showed that there were two groups within the examined populations. Neutrality tests and mismatch distribution analysis suggested that this species might have undergone a population expansion and the expansion time was estimated to be 0.25-0.46 Ma BR All these results would be crucial to establish scientific strategies for effective conservation and sustainable exploitation of wild resources of S. younghusbandi. (C) 2014 Elsevier Ltd. All rights reserved.

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