Genetic diversity and connectivity within Mytilus spp. in the subarctic and Arctic.
Genetic diversity and connectivity within Mytilus spp. in the subarctic and Arctic.
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DOI：
10.1111/eva.12415
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发表时间：
2017-01
影响因子：
4.1
通讯作者：
Nielsen EE
中科院分区：
文献类型：
--
作者：
Mathiesen SS;Thyrring J;Hemmer-Hansen J;Berge J;Sukhotin A;Leopold P;Bekaert M;Sejr MK;Nielsen EE
预计北极的气候变化将改变海洋物种的分布。然而，这种变化很难量化，因为有关当前物种分布和物种内遗传变异的信息缺乏或检查不力。蓝贻贝（Mytilus spp.）是全球沿海地区的生态系统工程师。为了提高对北极贻贝复合体的分布和遗传结构的了解，我们分析了 534 个贻贝属中的 81 个 SNP。在 13 个地点取样，为欧洲北极贻贝的分布和遗传变异提供基线数据。贻贝是发现的最丰富的物种，格陵兰岛和东大西洋的种群之间存在明显的遗传差异。令人惊讶的是，分析显示，格陵兰岛西北部高纬度地区（北纬 77°）存在松贻贝（Mytilus trossulus），格陵兰岛西南部、斯瓦尔巴群岛和伯朝拉海存在地中海贻贝（Mytilus galloprovincialis）或其杂交种。此外，观察到物种之间高度的杂交和基因渗入。我们的研究强调了区分同源物种的重要性，这可以显示出当地的适应性，并表明有关扩散路线和障碍的信息对于准确预测北极北方物种对范围扩张或入侵的区域敏感性至关重要。
Climate changes in the Arctic are predicted to alter distributions of marine species. However, such changes are difficult to quantify because information on present species distribution and the genetic variation within species is lacking or poorly examined. Blue mussels, Mytilus spp., are ecosystem engineers in the coastal zone globally. To improve knowledge of distribution and genetic structure of the Mytilus edulis complex in the Arctic, we analyzed 81 SNPs in 534 Mytilus spp. individuals sampled at 13 sites to provide baseline data for distribution and genetic variation of Mytilus mussels in the European Arctic. Mytilus edulis was the most abundant species found with a clear genetic split between populations in Greenland and the Eastern Atlantic. Surprisingly, analyses revealed the presence of Mytilus trossulus in high Arctic NW Greenland (77°N) and Mytilus galloprovincialis or their hybrids in SW Greenland, Svalbard, and the Pechora Sea. Furthermore, a high degree of hybridization and introgression between species was observed. Our study highlights the importance of distinguishing between congener species, which can display local adaptation and suggests that information on dispersal routes and barriers is essential for accurate predictions of regional susceptibility to range expansions or invasions of boreal species in the Arctic.
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影响因子：
2.5
作者：
Fetzer, Ingo;Arntz, Wolf E.
通讯作者：
Arntz, Wolf E.
影响因子：
4.9
作者：
Bierne, N;Daguin, C;Borsa, P
通讯作者：
Borsa, P
DOI：
10.1139/cjfas-2014-0473
发表时间：
2015-08-01
影响因子：
2.4
作者：
Chan, Farrah T.;MacIsaac, Hugh J.;Bailey, Sarah A.
通讯作者：
Bailey, Sarah A.
影响因子：
56.9
作者：
CARLTON, JT;GELLER, JB
通讯作者：
GELLER, JB
影响因子：
7.7
作者：
Excoffier, Laurent;Lischer, Heidi E. L.
通讯作者：
Lischer, Heidi E. L.