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首页> 外文期刊>Nature Communications >Multivariate selection drives concordant patterns of pre- and postcopulatory sexual selection in a livebearing fish
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Multivariate selection drives concordant patterns of pre- and postcopulatory sexual selection in a livebearing fish

机译：多元选择驱动活鱼中交配前后性选择的一致模式

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摘要

In many species, females mate with multiple partners, meaning that sexual selection on male traits operates across a spectrum that encompasses the competition for mates (that is, before mating) and fertilizations (after mating). Despite being inextricably linked, pre- and postcopulatory sexual selection are typically studied independently, and we know almost nothing about how sexual selection operates across this divide. Here we bridge this knowledge gap using the livebearing fish Poecilia reticulata. We show that both selective episodes, as well as their covariance, explain a significant component of variance in male reproductive fitness. Moreover, linear and nonlinear selection simultaneously act on pre-and postcopulatory traits, and interact to generate multiple phenotypes with similar fitness.
机译：在许多物种中，雌性与多个伴侣交配，这意味着对男性性状的性选择在整个范围内进行，该竞争涉及对配偶（即交配前）和受精（交配后）的竞争。尽管交往前和交往后的性选择之间有着千丝万缕的联系，但通常都是独立研究的，我们几乎不了解性选择如何跨越这种鸿沟。在这里，我们使用生鱼Poecilia reticulata弥补了这一知识鸿沟。我们表明选择性发作及其协方差可以解释男性生殖适应性差异的重要组成部分。此外，线性和非线性选择同​​时作用于交配前后的性状，并相互作用以产生具有相似适应性的多个表型。

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