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Mitochondrial genetic diversity and population structure of a vulnerable freshwater fish, rock carp (Procypris rabaudi) in upper Yangtze River drainage

文献类型： 外文期刊

作者： Song, Jun 2 ; Hou, Feixia 3 ; Zhang, Xiuyue 1 ; Yue, Bisong 1 ; Song, Zhaobin 1 ;

作者机构： 1.Sichuan Univ, Coll Life Sci, Sichuan Key Lab Conservat Biol Endangered Wildlif, Chengdu 610065, Peoples R China

2.Sichuan Acad Agr Sci, Analyt & Testing Ctr, Chengdu 610066, Peoples R China

3.Chengdu Univ Tradit Chinese Med, Coll Pharm, Chengdu 611137, Peoples R China

4.Sichuan Univ, Coll Life Sci, Minist Educ, Key Lab Bioresources & Ecoenvironm, Chengdu 610065, Peoples R China

关键词： Procypris rabaudi;Genetic differentiation;Population structure;mtDNA control region

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

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收录情况： SCI

摘要： Rock carp (Procypris rabaudi (Tchang)) is an endemic species in the upper Yangtze River drainage. The genetic variability and population structure of eight populations (Mudong (MD), Hejiang (HJ), Wanzhou (WZ), Xishui (XS), Nantan (NT), Cangxi (CX), Tongjiang (Ti) and Wulong (WL)) were investigated based on mitochondrial DNA control region. According to the river dimensions, MD, HJ, WZ, WL and CX were defined as large river populations, while TJ, XS and NT were defined as small. The total genetic diversity level of rock carp was moderate (h = 0.858, pi = 0.0079). Genetic differentiations among populations in small rivers were greater than those among populations in large rivers, and small rivers showed significant differentiation from large rivers. Analysis from the coalescent-based method showed that there were asymmetric gene flows among four large river populations (CX, HJ, MD and WZ). Demographic analyses suggested that the species as a whole and the WZ population experienced population expansion, while the Hi, NT, and MD populations experienced bottlenecks. The analysis of genetic diversity and population structure suggested that the WL, TJ, CX, NT and XS populations should be protected and managed separately, and that the HJ, MD and WZ populations should be considered as a genetic management unit

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