四川农业大学学报 ›› 2019, Vol. 37 ›› Issue (02): 253-258.doi: 10.16036/j.issn.1000-2650.2019.02.016

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沅水五强溪水库大鳍鱯的遗传多样性分析

许倩1,2, 刘良国1,*, 黄文轩1, 林青青1, 邓勇1, 吴丹1, 杨品红1   

  1. 1.湖南文理学院生命与环境科学学院/水产高效健康生产湖南省协同创新中心/环洞庭湖水产健康养殖及加工湖南省重点实验室/动物学湖南省高校重点实验室,湖南 常德 415000;
    2.中南大学生命科学学院,长沙 410000
  • 收稿日期:2018-10-19 出版日期:2019-04-28 发布日期:2021-01-29
  • 作者简介:许倩,硕士研究生。* 责任作者:刘良国,教授,博士,硕士生导师,主要研究鱼类多样性与遗传育种, E-mail: llg1818@126.com。
  • 基金资助:
    国家自然科学基金项目(31572619); 湖南省大学生研究性学习和创新性实验计划项目(湘教通〔2016〕283号-513)

Genetic Diversity Analysis of Mystus macropterus from Wuqiangxi Reservoir in Yuanshui River by ISSR Makers

XU Qian1,2, LIU Liangguo1,*, HUANG Wenxuan1, LIN Qingqing1, DENG Yong1, WU Dan1, YANG Pinhong1   

  1. 1. Collaborative Innovation Center for Efficient and Health Production of Fisheries in Hunan Province, Key Laboratory of Health Aquaculture and Product Processing in Dongting Lake Area of Hunan Province,Zoology Key Laboratory of Hunan Higher Education, College of life and environmental sciences,College of Life and Environmental Science, Hunan University of Arts and Science, Changde 415000, Hunan, China;
    2. School of Life Science, Central South University, Changsha 410000, China
  • Received:2018-10-19 Online:2019-04-28 Published:2021-01-29

摘要: 【目的】开展对沅水五强溪水库大鳍鱯(Mystus macropterus)的遗传多样性研究,了解水电开发影响下的鱼类遗传多样性。【方法】采用ISSR分子标记技术,分析洞庭湖水系沅水五强溪水库野生大鳍鱯群体的遗传多样性。【结果】8个ISSR引物在30个大鳍鱯群体样本中共获得1 162个扩增位点,其中多态位点1 141个,多态位点比例98.19%,表明五强溪水库大鳍鱯的遗传多样性丰富;水库大鳍鳠群体不同个体间的遗传距离在0.084~0.129之间,平均遗传距离为0.113,根据不同个体间的遗传距离,构建UPGMA聚类分支树状图,结果显示,30个大鳍鳠样本聚类成两个群体。【结论】沅水五强溪水库大鳍鱯群体内的遗传差异明显,至少存在两个种群的遗传分化。

关键词: 沅水, 五强溪水库, 大鳍鱯, ISSR分子标记, 遗传多样性

Abstract: 【Objective】 This study was to analyze the genetic diversity of Mystus macropterus population in Wuqiangxi Reservoir of Yuanshui River, and understand the diversity under the influence of hydropower development. 【Method】 Inter-simple sequence repeat (ISSR) molecular marker were employed to clarify wild M.macropterus population's differentiation. 【Result】 The genomic DNA of the M.macropterus were amplified with 8 ISSR primers, then1 162 amplified sites were observed in 30 samples, including 1 141 polymorphic loci, and the proportion of polymorphic loci amounted to 98.19%,indicating that M.macropterus have an abundant genetic diversity. The genetic distances among individuals in population were between 0.084 and 0.129, with the average genetic distances was 0.113. The UPGMA clustering tree, based on genetic distance of 30 individuals of M.macropterus showed that they were classified into 2 populations. 【Conclusion】 It′s demonstrated that the intra-population′s genetic differentiation was significantly obvious in Wuqiangxi Reservoir, and M.macropterus has more than two natural geographical populations in this area.

Key words: Yuanshui River, Wuqiangxi Reservoir, Mystus macropterus, ISSR molecular marker, genetic diversity

中图分类号: 

  • Q346+.5