Is Munida gregaria (Crustacea: Decapoda: Munididae) a truly transpacific species?

Patricia Perez-Barros; Gustavo A. Lovrich; Javier A. Calcagno; Viviana A. Confalonieri

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Is Munida gregaria (Crustacea: Decapoda: Munididae) a truly transpacific species?

机译：Munida gregaria（甲壳纲：十足目：Munididae）是真正的跨太平洋物种吗？

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The "East Pacific Barrier" has been recognized as the World's largest marine biogeographic barrier. Munida gregaria is the only species of its family with transpacific populations; however, it still remains to be elucidated whether these two distantly located populations belong to the same species. In this study, we investigated the genetic cohesion of M. gregaria across the East Pacific Barrier by analyzing mitochondrial markers. Cytochrome oxidase subunit I and NADH dehydrogenase subunit 1 genes were sequenced for individuals from different areas, i.e., the southeast Pacific, the southern tip of South America, the southwest Atlantic, and the southwest Pacific. A median-joining network, pairwise F_(ST)s, genetic diversity statistics, and neutrality tests were computed. Our results, i.e., the absence of different haplogroups on both sides of the East Pacific Barrier and existence of shared haplotypes, showed that populations on both sides of this barrier belong to the same species. At a population genetic level, our results suggest that individuals from both regions have been connected, since although some differentiation was found between the southern tip of South America and the southwest Pacific, the southeast Pacific and southwest Atlantic showed no signs of differentiation from the southwest Pacific. In addition, our results provided evidence of a population expansion in southern South America during the Pleistocene. The role of Pleistocene glaciations and the Antarctic Circumpolar Current in shaping the distribution of sub-Antarctic marine invertebrates is discussed.

机译：“东太平洋屏障”被公认为世界上最大的海洋生物地理屏障。 Munida gregaria是其家族中唯一具有跨太平洋种群的物种。但是，这两个遥远的种群是否属于同一物种仍有待阐明。在这项研究中，我们通过分析线粒体标记物研究了横跨东太平洋壁垒的M. gregaria的遗传凝聚力。对来自不同地区，即东南太平洋，南美南端，西南大西洋和西南太平洋的个体的细胞色素氧化酶亚基I和NADH脱氢酶亚基1基因进行了测序。计算了中间连接网络，成对的F_（ST），遗传多样性统计数据和中立性测试。我们的结果，即东太平洋屏障两侧没有不同的单倍群，并且存在共有的单体型，表明该屏障两侧的种群属于同一物种。在种群遗传水平上，我们的结果表明这两个地区的个体之间都有联系，因为尽管在南美的南端和西南太平洋之间发现了一些差异，但东南太平洋和西南大西洋没有显示出与西南方向的差异迹象。太平洋。此外，我们的结果提供了更新世期间南美洲南部人口增长的证据。讨论了更新世冰川和南极绕极洋流在塑造南极海底无脊椎动物分布中的作用。

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来源
《Polar biology》 |2014年第10期|1413-1420|共8页
作者
Patricia Perez-Barros; Gustavo A. Lovrich; Javier A. Calcagno; Viviana A. Confalonieri;
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作者单位

Departamento de Ecologfa, Genetica y Evolution, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires-IEGEBA (CONICET-UBA), Ciudad Universitaria, Pabellon Ⅱ,4° piso, C1428EHA Ciudad Autonoma de Buenos Aires,Argentina,Centro de Estudios Biomedicos, Biotecnologicos, Ambientales y Diagnosticos (CEBBAD), Universidad Maimonides - CONICET, Hidalgo 775, 6° piso,1405 Ciudad Autonoma de Buenos Aires, Argentina;

Centro Austral de Investigaciones Cientificas (CADIC) - CONICET, Bernardo Houssay 200, V9410CAB Ushuaia,Tierra del Fuego, Argentina;

Departamento de Ecologfa, Genetica y Evolution, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires-IEGEBA (CONICET-UBA), Ciudad Universitaria, Pabellon Ⅱ,4° piso, C1428EHA Ciudad Autonoma de Buenos Aires,Argentina,Centro de Estudios Biomedicos, Biotecnologicos, Ambientales y Diagnosticos (CEBBAD), Universidad Maimonides - CONICET, Hidalgo 775, 6° piso,1405 Ciudad Autonoma de Buenos Aires, Argentina;

Departamento de Ecologfa, Genetica y Evolution, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires-IEGEBA (CONICET-UBA), Ciudad Universitaria, Pabellon Ⅱ,4° piso, C1428EHA Ciudad Autonoma de Buenos Aires,Argentina;

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正文语种 eng
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关键词
Marine biogeography; Squat lobsters; East Pacific Barrier; Antarctic Circumpolar Current; COI; ND1;

机译：海洋生物地理;矮龙虾;东太平洋壁垒;南极绕极电流;COI;ND1;

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7. Discrete phenotypes are not underpinned by genome-wide genetic differentiation in the squat lobster Munida gregaria (Crustacea: Decapoda: Munididae): a multi-marker study covering the Patagonian shelf [O] . Chen Wang, Shobhit Agrawal, Jürgen Laudien, 2016

机译：蹲龙虾Munida gregaria（甲壳纲：十足目：鼠科）的全基因组遗传分化并不支持离散表型：一项涵盖巴塔哥尼亚大陆架的多标记研究

Is Munida gregaria (Crustacea: Decapoda: Munididae) a truly transpacific species?

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