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基于线粒体控制区的中部太平洋黄鳍金枪鱼种群遗传结构的研究
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上海海洋大学海洋科学学院,上海海洋大学海洋科学学院,上海海洋大学海洋科学学院,上海海洋大学海洋科学学院,上海海洋大学海洋科学学院

基金项目:

国家高技术研究发展计划（2012AA092303）；上海市教育委员会科研创新项目曙光计划（13SG51）


Genetic population analysis of Thunnus albacares from central Pacific Ocean based on mitochondrial DNA control region
Author:
  • LI Wei-wen

    LI Wei-wen

    College of Marine Sciences, Shanghai Ocean University, Shanghai 201306, China
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  • XU Qiang-hua

    XU Qiang-hua

    College of Marine Sciences, Shanghai Ocean University, Shanghai 201306, China;Key Laboratory of Sustainable Exploitation of Oceanic Fisheries Resources, Ministry of Education, Shanghai Ocean University, Shanghai 201306, China;Scientific Observing and Experimental Station of Oceanic Fisheries Resources and Environment, Ministry of Agriculture, Shanghai 201306, China;National Distant-water Fishieries Engineering Research Center, Shanghai 201306, China
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  • CHEN Xin-jun

    CHEN Xin-jun

    College of Marine Sciences, Shanghai Ocean University, Shanghai 201306, China;Key Laboratory of Sustainable Exploitation of Oceanic Fisheries Resources, Ministry of Education, Shanghai Ocean University, Shanghai 201306, China;Scientific Observing and Experimental Station of Oceanic Fisheries Resources and Environment, Ministry of Agriculture, Shanghai 201306, China;National Distant-water Fishieries Engineering Research Center, Shanghai 201306, China
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  • DAI Xiao-jie

    DAI Xiao-jie

    College of Marine Sciences, Shanghai Ocean University, Shanghai 201306, China;Key Laboratory of Sustainable Exploitation of Oceanic Fisheries Resources, Ministry of Education, Shanghai Ocean University, Shanghai 201306, China;Scientific Observing and Experimental Station of Oceanic Fisheries Resources and Environment, Ministry of Agriculture, Shanghai 201306, China;National Distant-water Fishieries Engineering Research Center, Shanghai 201306, China
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  • ZHU Jiang-feng

    ZHU Jiang-feng

    College of Marine Sciences, Shanghai Ocean University, Shanghai 201306, China;Key Laboratory of Sustainable Exploitation of Oceanic Fisheries Resources, Ministry of Education, Shanghai Ocean University, Shanghai 201306, China;Scientific Observing and Experimental Station of Oceanic Fisheries Resources and Environment, Ministry of Agriculture, Shanghai 201306, China;National Distant-water Fishieries Engineering Research Center, Shanghai 201306, China
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Affiliation:

College of Marine Sciences,Shanghai Ocean University,College of Marine Sciences,Shanghai Ocean University,College of Marine Sciences,Shanghai Ocean University,College of Marine Sciences,Shanghai Ocean University,College of Marine Sciences,Shanghai Ocean University

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    摘要:

    根据2010年9月-2012年1月，我国远洋捕捞船在太平洋中部（16°S~8°N； 160°W~155°E）的7个采样点采集到的101个样本，利用线粒体DNA控制区（mtDNA D-loop）基因的585 bp序列，分析了它们的遗传多样性和遗传结构。结果显示，585 bp片段中发现23个变异位点，80个单倍型；序列多样性分析结果显示，7个采样群体单倍型多样性指数h=0.994±0.002和核苷酸多样性指数π=0.00892±0.00038。分子方差分析揭示98.18%的遗传变异来自种群内，群体间的Fst分析揭示黄鳍金枪鱼7个采样群体内部不存在显著的遗传分化。Fu’s Fs呈负值和核苷酸不配对呈单峰，显示了黄鳍金枪鱼大约在335～544万年前经历了种群扩张；基因交流与遗传分化分析表明，该7个采样点的黄鳍金枪鱼群体之间存在强烈的基因交流，种群遗传分化水平较低。黄鳍金枪鱼种群遗传多样性低，为单一种群，应采用合理的有效措施进行管理，确保黄鳍金枪鱼产业的可持续发展。

    Abstract:

    The samples derived from the Chinese vessels were collected from 7 locations of central Pacific Ocean waters (16°S-8°N;160°W-155°E)from September 2011 to January 2012.By using 585 bp fragments of mtDNA control region, we analyzed the sequence variations and genetic structures of 101 samples collected from 7 locations.In total, 23 variable sites were acquired, and 80 haplotypes were identified.Analysis of mtDNA D-Loop gene sequences from 7 localities revealed that the mean haplotypic diversity and nucleotide diversity was 0.994±0.002 and 0.00892±0.00038, respectively.The AMOVA tests revealed that 98.18% of the genetic variation occurred within populations.Fst analysis suggested that no significant genetic differentiations were found within the 7 localities.Neutrality test and the mismatch distribution indicated a recent population expansion that occurred about 3 350 000-5 440 000 years ago, suggesting a frequency genetic exchange and a poor genetic structure.A single population and a low genetic diversity call for a responsible and effective management to ensure the sustainable development of yellowfin tuna.

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李伟文,许强华,陈新军,戴小杰,朱江峰.基于线粒体控制区的中部太平洋黄鳍金枪鱼种群遗传结构的研究[J].上海海洋大学学报,2014,23(5):782-788.
LI Wei-wen, XU Qiang-hua, CHEN Xin-jun, DAI Xiao-jie, ZHU Jiang-feng. Genetic population analysis of Thunnus albacares from central Pacific Ocean based on mitochondrial DNA control region[J]. Journal of Shanghai Ocean University,2014,23(5):782-788.

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  • 收稿日期:2013-12-09
  • 最后修改日期:2014-05-14
  • 录用日期:2014-06-10
  • 在线发布日期: 2014-09-18
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