Differential patterns of connectivity in Western Pacific hydrothermal vent metapopulations: A comparison of biophysical and genetic models.
Differential patterns of connectivity in Western Pacific hydrothermal vent metapopulations: A comparison of biophysical and genetic models.
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DOI：
10.1111/eva.13326
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发表时间：
2023-01
影响因子：
4.1
通讯作者：
Tunnicliffe V
中科院分区：
文献类型：
--
作者：
Breusing C;Johnson SB;Mitarai S;Beinart RA;Tunnicliffe V
热液生态系统面临着计划中的深海海底采矿活动的威胁，尽管人们对与喷口有关的人口和社区之间实现连通的模式仍然知之甚少。由于喷口特有物种的种群依赖幼虫扩散来维持连通性和对生境变化的适应能力，有效的热液生态系统保护战略应包括对集合种群动态的评估。在这项研究中，我们将种群遗传学方法与生物物理模型相结合，评估了西太平洋热液喷口的生态优势类群Alviniccha属的四个物种(A.C.Boucheti、A.Kokjimai、A.Durglmeri和A.dhessleri)内基因流动的强度和方向。与扩散模型的预测相反，马布切蒂的盆地间迁徙主要向东进行，而北斐济盆地内的人口结构明显，尽管没有海洋障碍。其他Alviniccha物种的扩散模型和遗传数据在很大程度上是一致的，这表明Alviniccha Kokjimai的盆地间迁徙有限，Liu盆地内的A.kurmeri缺乏遗传结构，以及由于洋流条件，马里亚纳弧后A.khessleri种群之间的基因流动受到限制。我们的发现表明，在生态相似的同类物种中，基因流动模式可能会显着不同，并且令人惊讶地有限，这取决于环境和进化背景。这些结果与区域养护规划有关，也与考虑对海底采矿威胁下的任何喷口集合进行类似的综合分析有关。
Hydrothermal ecosystems face threats from planned deep‐seabed mining activities, despite the fact that patterns of realized connectivity among vent‐associated populations and communities are still poorly understood. Since populations of vent endemic species depend on larval dispersal to maintain connectivity and resilience to habitat changes, effective conservation strategies for hydrothermal ecosystems should include assessments of metapopulation dynamics. In this study, we combined population genetic methods with biophysical models to assess strength and direction of gene flow within four species of the genus Alviniconcha (A. boucheti, A. kojimai, A. strummeri and A. hessleri) that are ecologically dominant taxa at Western Pacific hydrothermal vents. In contrast to predictions from dispersal models, among‐basin migration in A. boucheti occurred predominantly in an eastward direction, while populations within the North Fiji Basin were clearly structured despite the absence of oceanographic barriers. Dispersal models and genetic data were largely in agreement for the other Alviniconcha species, suggesting limited between‐basin migration for A. kojimai, lack of genetic structure in A. strummeri within the Lau Basin and restricted gene flow between northern and southern A. hessleri populations in the Mariana back‐arc as a result of oceanic current conditions. Our findings show that gene flow patterns in ecologically similar congeneric species can be remarkably different and surprisingly limited depending on environmental and evolutionary contexts. These results are relevant to regional conservation planning and to considerations of similar integrated analyses for any vent metapopulations under threat from seabed mining.
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影响因子：
2.9
作者：
DESBRUYERES, D;ALAYSEDANET, AM;SOAKAI, S
通讯作者：
SOAKAI, S
DOI：
10.1016/j.dsr.2008.02.001
发表时间：
2008-05-01
影响因子：
2.4
作者：
Henry, Michael S.;Childress, James J.;Figueroa, Dijanna
通讯作者：
Figueroa, Dijanna
影响因子：
1.9
作者：
Johnson, Shannon B.;Waren, Anders;Vrijenhoek, Robert C.
通讯作者：
Vrijenhoek, Robert C.
影响因子：
4.6
作者：
Boschen, Rachel E.;Collins, Patrick C.;Swaddling, Alison
通讯作者：
Swaddling, Alison
影响因子：
9.2
作者：
Breusing, Corinna;Biastoch, Arne;Reusch, Thorsten B. H.
通讯作者：
Reusch, Thorsten B. H.