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Genetic diversity of reef fishes around Cuba: a multispecies assessment

机译：古巴周围珊瑚礁鱼类的遗传多样性：多物种评估

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摘要

We aimed to identify biotic and abiotic factors underlying genetic structure and diversity of reef fish around Cuba. For three species, Stegastes partitus, Haemulon flavolineatum and Acanthurus tractus, we investigated the effects of shared environmental factors, such as the geography of the Cuban Archipelago, and specific characteristics, such as life history traits, on genetic structure and diversity. Samples were collected at five locations around Cuba. For S. partitus and H. flavolineatum, mitochondrial DNA and microsatellite loci were examined, whereas only mitochondrial DNA polymorphism was analyzed for A. tractus. All three species showed high genetic diversity. Mismatch distribution analyses suggest past population expansion in all species, but at different times in each species. Haplotype network and population genetic analyses suggest that: (1) S. partitus went through a recent population bottleneck in the late Pleistocene, (2) H. flavolineatum went through a population bottleneck but earlier, in the mid-Pleistocene, and (3) A. tractus has had a large and stable population size with coalescence times that go back to the late Pliocene. Genetic polymorphism in H. flavolineatum and A. tractus is homogeneous throughout the archipelago, whereas there is significant genetic structure in S. partitus. Genetic differentiation among S. partitus populations is most likely the result of the combined effects of egg type and oceanic current patterns along the Cuban coast.
机译：我们旨在确定构成古巴周围礁鱼遗传结构和多样性的生物和非生物因素。对于三个物种，即无花果Stegastes，Haemulon flavolineatum和Acanthurus tractus，我们研究了共享环境因素（例如古巴群岛的地理环境）以及特定特征（例如生活史特征）对遗传结构和多样性的影响。在古巴周围的五个地点收集了样本。对于S.partitus和H. flavolineatum，检查了线粒体DNA和微卫星基因座，而仅分析了线粒体DNA的多态性。这三个物种均显示出高遗传多样性。不匹配分布分析表明，过去所有物种的种群数量都有所增加，但每种物种在不同时间都有。单倍型网络和种群遗传学分析表明：（1）沙门氏菌在更新世晚期经历了最近的种群瓶颈，（2）黄萎病菌在更新世中期经历了种群瓶颈，但更早，经历了种群瓶颈，（3）遗迹曲霉具有较大且稳定的种群规模，合并时间可以追溯到上新世晚期。 H. flavolineatum和A. tractus的遗传多态性在整个群岛上是同质的，而在S. partitus中有重要的遗传结构。卵链球菌种群之间的遗传分化很可能是古巴沿岸卵型和洋流模式共同作用的结果。

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  • 来源
    《Marine biology》 |2016年第7期|165.1-165.16|共16页
  • 作者

    Castellanos-Gell Jessy; Robainas-Barcia Aymee; Pina-Amargos Fabian; Chevalier-Monteagudo Pedro; Metcalfe Cushla; Molina Wagner Franco; Casane Didier; Garcia-Machado Erik;

  • 作者单位

    Univ La Habana, Ctr Invest Marinas, Calle 16,114 Entre 1ra & 3ra, Havana 11300, Cuba;

    Pierre Fabre Iber, Calle Ramon Trias Fargas 7-11, Barcelona 08005, Spain;

    Ctr Invest Ecosistemas Costeros, 69 400 Cayo Coco, Moron, Ciego De Avila, Cuba;

    Acuario Nacl Cuba, Calle 60, Havana 11300, Cuba;

    CSIRO, 306 Carmody Rd, St Lucia, Qld 4067, Australia;

    Univ Fed Rio Grande do Norte, Ctr Biociencias, Dept Biol Celular & Genet, BR-59078970 Natal, RN, Brazil;

    Univ Paris Saclay, Univ Paris Sud, Evolut Genomes Comportement & Ecol, CNRS,IRD, F-91198 Gif Sur Yvette, France|Univ Paris Diderot, Sorbonne Paris Cite, F-75205 Paris, France;

    Univ La Habana, Ctr Invest Marinas, Calle 16,114 Entre 1ra & 3ra, Havana 11300, Cuba;

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