Sexual selection and speciation: the comparative evidence revisited
Sexual selection and speciation: the comparative evidence revisited
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DOI：
10.1111/j.1469-185x.2010.00150.x
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发表时间：
2011-05-01
影响因子：
10
通讯作者：
Maan, Martine E.
中科院分区：
文献类型：
--
作者：
Kraaijeveld, Ken;Kraaijeveld-Smit, Femmie J. L.;Maan, Martine E.
动物王国中性选择特征的惊人多样性激发了性选择可以促进物种分化的假设。近年来，一些研究试图通过将物种丰富度与跨物种的性选择估计相关联来验证这一想法。这些研究产生了不同的结果，目前尚不清楚比较证据是否可以被视为普遍支持。在这里，我们进行了一个荟萃分析的比较证据，发现一个小的，但显着的正性选择和物种形成率之间的整体相关性。然而，我们也发现效应量估计受到方法选择的影响。分析，包括更深的系统发育节点产生较弱的相关性，不同的代理性选择表现出不同的关系与物种丰富度。我们讨论了这些发现的生物学和方法学意义。我们认为，进步需要更具代表性的抽样和选择代理的性选择和物种形成率的理由，以及更机械的方法。
The spectacular diversity in sexually selected traits in the animal kingdom has inspired the hypothesis that sexual selection can promote species divergence. In recent years, several studies have attempted to test this idea by correlating species richness with estimates of sexual selection across phylogenies. These studies have yielded mixed results and it remains unclear whether the comparative evidence can be taken as generally supportive. Here, we conduct a meta-analysis of the comparative evidence and find a small but significant positive overall correlation between sexual selection and speciation rate. However, we also find that effect size estimates are influenced by methodological choices. Analyses that included deeper phylogenetic nodes yielded weaker correlations, and different proxies for sexual selection showed different relationships with species richness. We discuss the biological and methodological implications of these findings. We argue that progress requires more representative sampling and justification of chosen proxies for sexual selection and speciation rate, as well as more mechanistic approaches.