Genetic diversity and population structure analysis of Qinghai-Tibetan plateau schizothoracine fish (Gymnocypris dobula) based on mtDNA D-loop sequences.

被引：18

作者：

Chan, Jiulin ^{[1
]}

Li, Weiwen ^{[1
]}

Hu, Xingxing ^{[1
]}

Liu, Yimeng ^{[1
]}

Xu, Qianghua ^{[1
,2
,3
]}

机构：

[1] Shanghai Ocean Univ, Coll Marine Sci, Minist Educ, Key Lab Sustainable Exploitat Ocean Fisheries Res, 999 Huchenghuan Rd, Shanghai 201306, Peoples R China

[2] Shanghai Ocean Univ, Natl Distant Water Fisheries Engn Res Ctr, Shanghai 201306, Peoples R China

[3] Collaborat Innovat Ctr Distant Water Fisheries, Shanghai 201306, Peoples R China

来源：

BIOCHEMICAL SYSTEMATICS AND ECOLOGY | 2016年 / 69卷

基金：

中国国家自然科学基金;

关键词：

Gymnocypris dobula; D-loop; Genetic diversity; Phylogenetic relationships; Population structure; MITOCHONDRIAL-DNA; MOLECULAR PHYLOGENY; PHYLOGEOGRAPHY; GROWTH; CYPRINIDAE; EVOLUTION; HISTORY;

D O I：

10.1016/j.bse.2016.09.004

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

Gymnocypris dobula is a commercially important fishery species and mostly distributed in the freshwater of Tibetan plateau. In this study, genetic diversity and intraspecific population differentiation were examined by using mitochondrial DNA D-loop sequences in 97 individuals sampled from three localities (Pali, Lasa and Yanghu) in the Tibetan plateau. Two hundred and fourteen polymorphic sites and 50 haplotypes were defined among the three localities. Genetic diversity analysis showed that the highest genetic diversity level was found in Pali population. Phylogenetic relationships analysis results indicated that closer phylogenetic relationships were found between the Yanghu and Lasa populations. Genetic population differentiation analysis indicated that the majority of variation (84.91%) was attributed to variations among populations and the largest differentiation was found between Pali and Lasa localities (F-st = 0.874, Nm = 0.036). Moreover, the historical demographic events were assessed by implementing the mismatch distribution analysis, Fajima's D test and Fu's Fs test. The results indicated that the Pali population had undergone a demographic expansion, possibly within the last 0.163 MYA (Million Years Ago). Our study firstly identified the population genetic structure of the G. dobula, which could be helpful for artificial breeding, fishery stock identification and resource conservation for this species. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：152 / 160

页数：9