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首页> 外文期刊>Estuarine Coastal and Shelf Science >The connectivity of Mytilus galloprovincialis in northern Morocco: A gene flow crossroads between continents
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The connectivity of Mytilus galloprovincialis in northern Morocco: A gene flow crossroads between continents

机译：摩洛哥北部的Mytilus galloprovincialis的连通性：各大洲之间的基因流十字路口

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摘要

Previous population genetic studies on the Mediterranean mussel Mytilus galloprovincialis have shown the existence of two well differentiated sets of populations around Southern European coasts, one Atlantic and another Mediterranean. Those two population pools are kept apart by the Almeria - Oran Oceanographic Front (AOOF), an oceanographic discontinuity acting either as a cause of such differentiation or simply as a means of maintaining two historically differentiated gene pools. The role of the Gibraltar Strait at shaping mussel larval flow entering the Alboran Sea has been much less addressed, especially regarding mussel swarms inhabiting the northern coast of Morocco. The present study applies seven microsatellite markers to describing the genetic status of northern Moroccan populations of M. galloprovincialis and their relationship with the two well-characterized mussel gene pools from southern Europe. We show that the Atlantic Iberia gene pool extending continuously from the Canta-brian Sea (NE Iberia) to the Alboran Sea (SE Iberia) up to the AOOF is well differentiated from the Atlantic Moroccan mussel. Either an oceanographic barrier or a limited larval dispersal or both, are required to explain this unexpected intercontinental differentiation regarding previous studies on this species. Populations from Atlantic Morocco conformed to a single gene pool (F_(ST) ± SD = 0.012 ± 0.007) as opposed to the reported latitudinal barrier to gene flow at Cape Ghir in western Morocco. Additionally, a significant restriction to gene flow was observed between Atlantic Morocco and Alboran Morocco (F_(ST) ± SD = 0.038 ± 0.010) in contrast to the reported mussel genetic continuity along the Iberian coast up to AOOF. Three major mussel gene pools appear to meet at this crossroads between continents and between seas, namely, a Mediterranean European subpopulation, an Atlantic Iberia subpopulation including the Alboran Sea, and an Atlantic Morocco subpopulation. Knowledge on genetic patterns across species around the biogeographical breakpoints of Gibraltar and AOOF allows a better understanding of the complexity of dispersal patterns at this crossroads between continents.
机译：以前对地中海贻贝Mytilus galloprovincialis进行的种群遗传研究表明，在南欧沿岸存在着两个高度分化的种群，一个是大西洋，另一个是地中海。阿尔梅里亚-奥兰海洋学前线（AOOF）将这两个人口库区分开来，这是造成这种分化的原因，或者仅仅是维持两个历史上有差异的基因库的一种手段。直布罗陀海峡在塑造进入阿尔伯兰海的贻贝幼体流方面的作用尚未得到解决，特别是在居住于摩洛哥北部海岸的贻贝群方面。本研究应用七个微卫星标记来描述北摩洛哥罗非鱼的摩洛哥种群的遗传状况，以及它们与来自欧洲南部的两个特征鲜明的贻贝基因库的关系。我们显示，大西洋伊比利亚基因库从Canta-brian海（NE伊比利亚）一直延伸到Alboran海（SE伊比利亚）直至AOOF一直延伸到大西洋摩洛哥贻贝。需要海洋屏障或有限的幼虫扩散或两者兼有，以解释有关该物种先前研究的这种意想不到的洲际差异。来自摩洛哥摩洛哥的种群符合单一基因库（F_（ST）±SD = 0.012±0.007），与据报道摩洛哥西部吉普角的基因流动存在纬度障碍有关。另外，在大西洋摩洛哥和Alboran摩洛哥之间观察到对基因流的显着限制（F_（ST）±SD = 0.038±0.010），这与报道的沿伊比利亚海岸直至AOOF的贻贝遗传连续性形成了鲜明对比。在大陆之间和海洋之间的这个十字路口，似乎出现了三个主要的贻贝基因库，分别是地中海欧洲亚群，包括阿尔伯兰海的大西洋伊比利亚亚群和大西洋摩洛哥亚群。有关直布罗陀和AOOF的生物地理断点附近物种间遗传模式的知识，可以更好地了解各大洲之间这个十字路口的分散模式的复杂性。

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  • 来源
    《Estuarine Coastal and Shelf Science》 |2015年第5期|1-10|共10页
  • 作者

    Yassine Ouagajjou; Pablo Presa;

  • 作者单位

    University of Vigo, ECIMAT & Faculty of Marine Sciences, Department of Biochemistry, Genetics and Immunology, 36310 Vigo, Spain,Universite Ibn Zohr, Faculte des Sciences, Laboratoire de Biotechnologie et Valorisation des Ressources Naturelles, 80000 Agadir, Morocco,Institut National de Recherche Halieutique (National Institute of Fisheries Research), Laboratory of Oceanography, Aquaculture and Litoral Resources, 73000 Dakhla, Morocco;

    University of Vigo, ECIMAT & Faculty of Marine Sciences, Department of Biochemistry, Genetics and Immunology, 36310 Vigo, Spain;

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  • 正文语种 eng
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  • 关键词

    gene flow barriers; genetic connectivity; Moroccan blue mussel; Mytilus galloprovincialis;

    机译：基因流动障碍;遗传连通性;摩洛哥蓝贻贝;鸡没食子菌;

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