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首页> 外文期刊>Animal Genetics >Genetic diversity within and among Atlantic cod (Gadus morhua) farmed in marine cages: a proof-of-concept study for the identification of escapees
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Genetic diversity within and among Atlantic cod (Gadus morhua) farmed in marine cages: a proof-of-concept study for the identification of escapees

机译：养殖在网箱中的大西洋鳕（Gadus morhua）之内和之中的遗传多样性：用于鉴定逃逸者的概念验证研究

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摘要

SummaryThis study presents a molecular genetic characterization of Atlantic cod reared in commercial marine farms. Samples consisted of approximately 47 fish collected from nine cages located on four farms throughout Norway. In addition, 28 farmed escapees were recaptured in the sea (443 fish in total). Nine microsatellite loci and the Pan I gene were analysed, revealing a total of 181 alleles. Each sample contained 43–63% of total allelic variation. Comparing variation with published data for wild cod indicates that lower genetic variation exists within single cages than in wild populations. Significant linkage disequilibrium was observed amongst pairs of loci in all samples, suggesting a low number of contributing parental fish. Global FST was 0.049, and the highest pairwise FST value (pooled loci) was 0.085. For single loci, the Pan I gene was the most diagnostic, displaying a global FST of 0.203. Simulations amongst the samples collected on farms revealed an overall correct self-assignment percentage of 75%, demonstrating a high probability of identifying individuals to their farm of origin. Identification of the 28 escapees revealed a single cage as the most likely source of origin for half of the escapees, whilst the remaining fish were assigned to a mixture of samples, suggesting more than one source of escapees.
机译：总结这项研究提出了在商业海洋养殖场饲养的大西洋鳕鱼的分子遗传学特征。样本包括从位于挪威各地四个农场的九个网箱中收集的大约47条鱼。此外，有28个养殖的逃逸者被重新捕获在海中（总共4​​43条鱼）。分析了9个微卫星基因座和Pan I基因，揭示了总共181个等位基因。每个样本包含总等位基因变异的43–63％。将变异与野生鳕鱼的公开数据进行比较表明，单个笼中存在的遗传变异低于野生种群。在所有样品中的成对基因座之间都观察到显着的连锁不平衡，表明亲代鱼类的数量很少。全局F ST 为0.049，最高的成对F ST 值（合并基因座）为0.085。对于单个基因座，Pan I基因是最具诊断性的，显示全局F ST 为0.203。从农场收集的样本中进行的模拟显示，总体正确的自我分配百分比为75％，这表明有很高的可能性识别出其原籍农场的个人。对28个逃生者的鉴定表明，一个网箱是一半逃生者最有可能的来源，而其余鱼被分配到混合样本中，表明有多个逃生者。

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  • 来源
    《Animal Genetics》 |2010年第5期|p.515-522|共8页
  • 作者

    K. A. Glover; G. Dahle; J. I. Westgaard; T. Johansen; H. Knutsen; K. E. Jørstad;

  • 作者单位

    Institute of Marine Research, PO Box 1870, Nordnes. N-5817 Bergen, Norway;

    Institute of Marine Research, PO Box 1870, Nordnes. N-5817 Bergen, Norway;

    Institute of Marine Research. PO Box 6404, NO-9294 Tromsø, Norway;

    Institute of Marine Research. PO Box 6404, NO-9294 Tromsø, Norway;

    Institute of Marine Research. Nye Flødevigveien 20, N-4817 HIS, Norway;

    Institute of Marine Research, PO Box 1870, Nordnes. N-5817 Bergen, Norway;

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  • 关键词

    aquaculture; assignment; escapee; microsatellite; Pan I; traceability;

    机译：水产养殖;转让;逃逸;微卫星;盘I;可追溯性;

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