Contemporary sexual selection does not explain variation in male display traits among populations
Contemporary sexual selection does not explain variation in male display traits among populations
复制标题
当代性选择不能解释人群中男性表现特征的变化
DOI：
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发表时间：
2019
期刊：
影响因子：
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通讯作者：
E. Hebets
中科院分区：
文献类型：
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作者：
J. C. Watts;Allissa Flynn;B. Tenhumberg;E. Hebets
性选择被广泛假设为通过种群间性特征和性特征偏好的差异促进生殖隔离的进化。然而，直接证据分歧性选择导致种内性状分歧仍然有限。使用狼蛛Schizocosa crassipes，我们的特点是女性的择偶模式内和地理位置之间，并与这些模式的地理变异男性显示特征，以测试是否不同的性选择造成的择偶解释种内性状变异。我们发现的证据表明，表型选择的男性行为所产生的女性配偶的选择，但没有证据表明，选择不同的地点。只有那些不影响择偶的形态和行为特征在地理上有差异。这些结果是不一致的正在进行的分歧性选择所观察到的种内分歧男性显示特征。这些发现与分歧性选择可能持续存在的潜在限制性条件的理论一致，并表明能够检测周期性或短暂性分歧性选择的长期研究对于严格评估分歧性选择在种内性状分歧中的相对重要性至关重要。
Sexual selection is widely hypothesized to facilitate the evolution of reproductive isolation through divergence in sexual traits and sexual trait preferences among populations. However, direct evidence of divergent sexual selection causing intraspecific trait divergence remains limited. Using the wolf spider Schizocosa crassipes, we characterized patterns of female mate choice within and among geographic locations and related those patterns to geographic variation in male display traits to test whether divergent sexual selection caused by mate choice explains intraspecific trait variation. We found evidence of phenotypic selection on male behavior arising from female mate choice, but no evidence that selection varied among locations. Only those suites of morphological and behavioral traits that did not influence mate choice varied geographically. These results are inconsistent with ongoing divergent sexual selection underlying the observed intraspecific divergence in male display traits. These findings align with theory on the potentially restrictive conditions under which divergent sexual selection may persist, and suggest that long‐term studies capable of detecting periodic or transient divergent sexual selection will be critical to rigorously assess the relative importance of divergent sexual selection in intraspecific trait divergence.