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Assessment of genetic diversity and population structure of swamp eel Monopterus albus in China

文献类型： 外文期刊

作者： Liang, Hongwei 1 ; Guo, Shanshan 1 ; Li, Zhong 1 ; Luo, Xiangzhong 1 ; Zou, Guiwei 1 ;

作者机构： 1.Chinese Acad Fishery Sci, Yangtze River Fisheries Res Inst, 8 1st Wudayuan Rd, Wuhan 430223, Hubei Province, Peoples R China

关键词： Monopterus albus; Swamp eel; Genetic diversity; Mitochondrial D-loop

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

ISSN： 0305-1978

年卷期： 2016 年 68 卷

页码：

收录情况： SCI

摘要： Swamp eel has become one of the most economically important fish in China. However, the wild swamp eel is facing the serious challenge of declining population and germplasm degeneration because most of farming swamp eel fingerlings was collected by fishing wild individuals. In this study, the genetic variation of Monopterus albus in six dominant farming regions was investigated based on the mitochondrial DNA D-Loop of 1008 bp in length. 180 individuals from 6 populations were examined and 74 haplotypes were observed. The overall genetic diversity was abundant and which its SD population was highest but CQ population was lowest. There was obvious genetic differentiation among investigated populations. Phylogenetic analysis revealed that these individuals were divided into four distinct genetic clades, Glade A, B, C, and D. Clade A should be the most common ancestor Glade. AH and CQ populations might originate from one single ancestor in maternal Glade A. Clade C should be a native important Glade in China. Though the genetic diversity did not suffered obvious decreasing, it is still imperative to take effective conservation measurements and establish an efficient selective breeding program. (C) 2016 Elsevier Ltd. All rights reserved.

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