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Genetic characterization of northern snakehead (Channa argus) populations in China using microsatellite markers

文献类型： 外文期刊

作者： Zhuo, Xiaolei 1 ; Liang, Risheng 1 ; Chen, Yanfeng 1 ; Huang, Guiju 2 ; Yu, Dahui 2 ; Zou, Jixing 1 ;

作者机构： 1.S China Agr Univ, Coll Anim Sci, Dept Aquaculture, Guangzhou 510642, Guangdong, Peoples R China

2.Chinese Acad Fishery Sci, S China Sea Fisheries Res Inst, Guangzhou 510330, Guangdong, Peoples R China

关键词： Channa argus;Genetic variety;Population;Allele;Microsatellite

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：

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收录情况： SCI

摘要： Five variable microsatellite loci were used to investigate genetic characterization of northern snakehead populations in China. A total of 260 fish were genotyped representing eight populations. There were 95 alleles found at the five microsatellite loci, and 24 were private alleles. The frequency of these private alleles was very low. The average number of observed alleles in each population ranged from 5.60 to 11.40, and the mean number of effective alleles ranged from 3.66 to 6.67. The average observed heterozygosity (Ho) and expected heterozygosity (HE) in the eight populations ranged from 0.626 to 0.800 and from 0.703 to 0.846. Significant deviations from Hardy-Weinberg were found in the eight populations at most of the microsatellite loci. Results from UPGMA analysis indicated that the eight populations could be divided into five major clusters. These results are useful for the evaluation and conservation of the northern snakehead in China. In order to prevent the alleles from extinction and conserve the genetic resource, we should strengthen the conservation and supervision of wild northern snakehead resources and forbid overfishing in the natural waters. (C) 2012 Elsevier Ltd. All rights reserved.

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