• 研究报告 •

### 长江中上游两个鲢群体遗传变异的微卫星分析

1. 1. 华中农业大学水产学院, 武汉 430070;
2. 农业部淡水鱼类种质资源与生物技术重点开放实验室, 中国水产科学研究院长江水产研究所, 荆州 434000

• 收稿日期:2008-01-31 修回日期:2008-03-24 出版日期:2008-10-10 发布日期:2008-10-10
• 通讯作者: 邹桂伟

### Genetic variation analysis of two silver carp populations in the middle and upper Yangtze River by microsatellite

WANG Chang-Zhong1, 2; LIANG Hong-Wei2; ZOU Gui-Wei1, 2; LUO Xiang-Zhong2; LI Zhong2; TIAN Hua1, 2; HU Guang-Fu1, 2

1. 1. Fisheries College of Huazhong Agricuhural University, Wuhan 430070, China;
2. Key Lab of Freshwater Fish Germplasm Resources and Biotechnology Certificated by Ministry of Agriculture, Yangtze River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Jingzhou 434000, China
• Received:2008-01-31 Revised:2008-03-24 Online:2008-10-10 Published:2008-10-10
• Contact: ZOU Gui-Wei

Abstract:

Thirty nine microsatellite markers were applied to analyze the genetic diversity of two silver carp populations in the middle and upper reaches of the Yangtze River. The following parameters were calculated: average observed number of alleles, average effective number of alleles, genetic heterozygosity, polymorphism information content (PIC), genetic similarity coefficient, genetic distance, Hardy-Weinberg balance deflection index. These results indicated that the average observed number of alleles in each microsatellite locus of the Wanzhou population and Jianli populations is 6.128 and 4.974, respectively; the average effective number of alleles is 4.107 and 3.395, respectively; and the number of total alleles of these 39 microsatellite loci is 259. The PIC of polymorphic loci varies between 0.077-0.865, and the average PIC is 0.617. The average observed heterozygosity (Ho) of two populations is 0.834 and 0.775, respectively, and the average expective heterzygosity (He) is 0.713 and 0.623, respectively. The genetic similarity coefficient of two populations is 0.618 and the genetic distance of these populations is 0.482. These results indicated that the two populations belong to different popula-tions for the obvious genetic differentiation.
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