Parallel evolution of local adaptation and reproductive isolation in the face of gene flow.
Parallel evolution of local adaptation and reproductive isolation in the face of gene flow.
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DOI：
10.1111/evo.12329
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发表时间：
2014-04
期刊：
影响因子：
--
通讯作者：
Rolán-Alvarez E
中科院分区：
文献类型：
--
作者：
Butlin RK;Saura M;Charrier G;Jackson B;André C;Caballero A;Coyne JA;Galindo J;Grahame JW;Hollander J;Kemppainen P;Martínez-Fernández M;Panova M;Quesada H;Johannesson K;Rolán-Alvarez E
相似表型的平行进化为自然选择的作用提供了强有力的证据。这些表型有助于生殖隔离，他们进一步支持的分歧，栖息地相关的物种形成的选择的作用。然而，对不同的生态类型目前占据不同的地理区域的对比栖息地的观察是不足以推断平行的起源。在这里，我们表现出惊人的平行表型种群之间的岩石海岸腹足类，岩滨螺saxatilis，占据对比鲜明的栖息地暴露于波浪作用或螃蟹捕食。这种差异与基因交换的障碍有关，但尽管如此，遗传变异的结构更强烈的地理比生态型。使用近似贝叶斯分析的序列数据和扩增的片段长度多态性标记，我们表明，生态型很可能已经出现在面对连续的基因流和人口分离的生态型已经发生在区域和地方规模并行。参数估计表明，殖民地的一个地方和生态型的形成之间有很长的延迟，也许是因为冰后期的螃蟹种群的传播速度慢于蜗牛的传播。适应性分化可能不是完全遗传独立的，尽管在人口统计学上是平行的。这些结果为生态驱动的物种形成的主要模型提供了新的见解。
Parallel evolution of similar phenotypes provides strong evidence for the operation of natural selection. Where these phenotypes contribute to reproductive isolation, they further support a role for divergent, habitat-associated selection in speciation. However, the observation of pairs of divergent ecotypes currently occupying contrasting habitats in distinct geographical regions is not sufficient to infer parallel origins. Here we show striking parallel phenotypic divergence between populations of the rocky-shore gastropod, Littorina saxatilis, occupying contrasting habitats exposed to either wave action or crab predation. This divergence is associated with barriers to gene exchange but, nevertheless, genetic variation is more strongly structured by geography than by ecotype. Using approximate Bayesian analysis of sequence data and amplified fragment length polymorphism markers, we show that the ecotypes are likely to have arisen in the face of continuous gene flow and that the demographic separation of ecotypes has occurred in parallel at both regional and local scales. Parameter estimates suggest a long delay between colonization of a locality and ecotype formation, perhaps because the postglacial spread of crab populations was slower than the spread of snails. Adaptive differentiation may not be fully genetically independent despite being demographically parallel. These results provide new insight into a major model of ecologically driven speciation.
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影响因子：
1.2
作者：
Carvajal-Rodríguez, A;Conde-Padín, P;Rolán-Alvarez, E
通讯作者：
Rolán-Alvarez, E
影响因子：
4.9
作者：
Clement, M;Posada, D;Crandall, KA
通讯作者：
Crandall, KA
DOI：
10.1111/j.1095-8312.2008.00998.x
发表时间：
2008-07-01
影响因子：
1.9
作者：
Conde-Padin, Paula;Cruz, Raquel;Rolan-Alvarez, Emilio
通讯作者：
Rolan-Alvarez, Emilio
影响因子：
3.3
作者：
Caballero, Armando;Quesada, Humberto;Rolan-Alvarez, Emilio
通讯作者：
Rolan-Alvarez, Emilio
影响因子：
4.3
作者：
Charbit, S.;Ritz, C.;Kageyama, M.
通讯作者：
Kageyama, M.