Sexual selection plays several intricate and complex roles in the related processes of local adaptation and speciation. In some cases sexual selection can promote these processes, but in others it can be inhibitory. We present theoretical and empirical evidence supporting these dual effects of sexual selection during local adaptation, allopatric speciation, and speciation with gene flow. Much of the empirical evidence for sexual selection promoting speciation is suggestive rather than conclusive; we present what would constitute strong evidence for sexual selection driving speciation. We conclude that although there is ample evidence that sexual selection contributes to the speciation process, it is very likely to do so only in concert with natural selection.

中文翻译：

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性选择在地方适应和物种形成中的作用

性选择在当地适应和物种形成的相关过程中扮演着几个错综复杂的角色。在某些情况下，性选择可以促进这些过程，但在其他情况下，它可能是抑制性的。我们提出了理论和经验证据，支持在局部适应、异地物种形成和基因流物种形成过程中性选择的这些双重影响。许多关于促进物种形成的性选择的经验证据是暗示性的，而不是决定性的；我们提出了构成性选择驱动物种形成的有力证据。我们得出的结论是，尽管有充分的证据表明性选择有助于物种形成过程，但很可能只有与自然选择一致才会这样做。