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首页> 外文期刊>Marine ecology >Population structure and connectivity in the Atlantic scleractinian coral Montastraea cavernosa (Linnaeus, 1767)
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Population structure and connectivity in the Atlantic scleractinian coral Montastraea cavernosa (Linnaeus, 1767)

机译：大西洋巩膜珊瑚Montastraea cavernosa中的种群结构和连通性（Linnaeus，1767年）

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摘要

Coral reefs are increasingly threatened worldwide by a variety of biological and physical factors, including disease, bleaching and ocean acidification. Understanding levels of connectivity among widespread populations can assist in conservation efforts and the design of marine protected areas, as larval dispersal scales affect population demography. This study examined genetic connectivity and morphological variation of the broadcast spawning coral Montastraea cavernosa (L., 1767) among five locations in the Caribbean and Western Atlantic. Analysis of mtDNA and nuclear rRNA internal transcribed spacers, at both the local and regional scale, revealed that the majority of variation existed within locations rather than among them. Likewise, the majority of pairwise comparisons were non-significant between sites and locations. These results suggest that moderate to high gene flow occurs within and among populations of M. cavernosa in the Western Atlantic. The phylogeographic signature and significant pairwise comparisons among several locations, however, indicate that populations are also partially maintained through self-seeding and that gene flow may be restricted over large geographic distances. Additionally, while some anatomical variation is likely attributable to phenotypic plasticity, variations in skeletal morphology between Jamaica and other locations correspond with significant pairwise genetic distances and the presence of private sequence types (limited to a single location), suggesting selection to local environmental conditions.
机译：全世界范围内，珊瑚礁正受到各种生物和物理因素的威胁，包括疾病，漂白和海洋酸化。由于幼虫的扩散规模会影响人口统计，因此了解广泛人群之间的连通性水平有助于保护工作和海洋保护区的设计。这项研究检查了加勒比和西大西洋五个地区之间繁殖的产卵珊瑚Montastraea cavernosa（L.，1767）的遗传连通性和形态变异。在局部和区域范围内对mtDNA和核rRNA内部转录间隔子的分析表明，大多数变异存在于位置内而不是位置内。同样，大多数成对比较在地点和位置之间也不重要。这些结果表明，在西大西洋的C. Cavernosa种群内部和种群之间发生了中度至高水平的基因流动。但是，系统地理学特征和几个位置之间的显着成对比较表明，种群也通过自我播种得到部分维持，并且基因流可能在较大的地理距离上受到限制。此外，虽然某些解剖学变异很可能归因于表型可塑性，但牙买加与其他位置之间骨骼形态的变异与显着的成对遗传距离和私人序列类型的存在（仅限于单个位置）相对应，表明选择了当地的环境条件。

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  • 来源
    《Marine ecology》 |2012年第1期|p.32-48|共17页
  • 作者

    Gretchen Goodbody-Gringley; Robert M. Woollacott; Gonzalo Giribet;

  • 作者单位

    Mote Marine Laboratory - Tropical Research Laboratory, 24244 Overseas Highway, Summerland Key, FL 33042, USA;

    Museum of Comparative Zoology, Department of Organismic and Evolutionary Biology, Harvard University, Cambridge, MA, USA;

    Museum of Comparative Zoology, Department of Organismic and Evolutionary Biology, Harvard University, Cambridge, MA, USA;

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  • 正文语种 eng
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  • 关键词

    bermuda; cnidaria; caribbean; geneflow; morphology;

    机译：百慕大;刺孢子虫加勒比基因流形态学;

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