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首页> 外文期刊>Marine biology >Population genetic structure and genetic diversity of three critically endangered Pristis sawfishes in Australian waters
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Population genetic structure and genetic diversity of three critically endangered Pristis sawfishes in Australian waters

机译：澳大利亚水域中三种极度濒临灭绝的Pristis锯鱼的种群遗传结构和遗传多样性

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摘要

Northern Australia is considered to be one of the last strongholds for three critically endangered sawfishes, Pristis zijsron, Pristis clavata, and Pristis microdon, making these populations of global significance. Population structure and levels of genetic diversity were assessed for each species across northern Australia using a portion of the mitochondrial control region. Statistically significant genetic structure was detected in all three species, although it was higher in P. microdon (FST = 0.811; N = 149) than in either P. clavata (FST = 0.419; N - 73) or P. zijsron (FST = 0.202; N = 49), possibly due to a much higher and/or localized level of female philopatry in P. microdon. The overall levels of haplotype diversity in P. zijsron (h = 0.555), P. clavata {h = 0.489), and P. microdon (h = 0.650) were moderate, although it appears to be reduced in the assemblages of P. zijsron and P. clavata in the Gulf of Carpentaria (h = 0.342 and h = 0.083, respectively). Since female migration (replenishment) between regions is unlikely, conservation plans should strive to maintain current levels of diversity and abundances in the regional assemblages of each species.
机译：北澳大利亚被认为是三种极度濒危的锯齿鱼类（Pristis zijsron，Pristis clavata和Pristis microdon）的最后据点之一，使这些种群具有全球重要性。使用一部分线粒体控制区，评估了澳大利亚北部各物种的种群结构和遗传多样性水平。在所有这三个物种中均检测到统计学上显着的遗传结构，尽管在体育小球藻（FST = 0.811; N = 149）中比在蟹爪螺（FST = 0.419; N-73）或P. zijsron（FST = 0.202; N = 49），可能是由于小粉虱的女性哲学研究水平更高和/或局部更高。尽管在P. zijsron组合中似乎有所降低，但P. zijsron（h = 0.555），C。clavata（h = 0.489）和P. microdon（h = 0.650）的单倍型多样性总体水平中等。和卡庞塔利亚湾的C. clavata（分别为h = 0.342和h = 0.083）。由于不可能在区域之间进行女性迁徙（补给），因此保护计划应努力保持每种物种在区域组合中的当前多样性和丰度水平。

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  • 来源
    《Marine biology》 |2011年第4期|p.903-915|共13页
  • 作者

    Nicole M. Phillips; Jennifer A. Chaplin; David L. Morgan; Stirling C. Peverell;

  • 作者单位

    Centre for Fish and Fisheries Research, Murdoch University,South Street, Murdoch, WA 6150, Australia;

    Centre for Fish and Fisheries Research, Murdoch University,South Street, Murdoch, WA 6150, Australia;

    Centre for Fish and Fisheries Research, Murdoch University,South Street, Murdoch, WA 6150, Australia;

    Queensland Department of Primary Industries and Fisheries,Sustainable Fisheries, Northern Fisheries Centre,Cairns, QLD 4870, Australia;

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