Condition-Dependent Mutual Mate Preference and Intersexual Genetic Correlations for Mating Activity
Condition-Dependent Mutual Mate Preference and Intersexual Genetic Correlations for Mating Activity
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条件依赖性相互择偶偏好和交配活动的两性遗传相关性
DOI：
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发表时间：
2020
影响因子：
2.9
通讯作者：
N. Dingemanse
中科院分区：
文献类型：
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作者：
Chang S. Han;R. Brooks;N. Dingemanse
虽然交配代表了一种相互作用，但对配偶偏好的研究长期以来一直集中在一种性别的选择和另一种性别的偏好特征上。在研究交配偏好的成本和条件依赖性表达时，情况确实如此，大多数研究都是关于雌性偏好的。条件依赖性和相互择偶偏好的遗传结构仍然在很大程度上未被研究，尽管它们可能与更普遍的偏好和交配行为的进化有关。在这里，我们测量了（a）男性和女性的交配偏好和（B）交配活动的纯种南方田间蟋蟀（Gryllus bimaculatus）提出了一个有利的（自由选择）或压力（蛋白质剥夺）饮食的人口的性间遗传相关性。在良好的饮食环境中，相互交配偏好很强，交配活动的间性遗传协方差与一个没有什么不同。然而，在紧张的饮食环境中，相互交配偏好是弱的，交配活动的间性遗传协方差显着小于1。总之，我们的研究结果表明，饮食环境影响交配行为的遗传变异的表达：当环境是紧张的，（a）双方的择偶偏好的强度和（B）交配活动的性间遗传协方差趋于减弱。这意味着交配动力学在不同的环境中有很大的差异。
Although mating represents a mutual interaction, the study of mate preferences has long focused on choice in one sex and preferred traits in the other. This has certainly been the case in the study of the costs and condition-dependent expression of mating preferences, with the majority of studies concerning female preference. The condition dependence and genetic architecture of mutual mate preferences remain largely unstudied, despite their likely relevance for the evolution of preferences and of mating behavior more generally. Here we measured (a) male and female mate preferences and (b) intersexual genetic correlations for the mating activity in pedigreed populations of southern field crickets (Gryllus bimaculatus) raised on a favorable (free-choice) or a stressful (protein-deprived) diet. In the favorable dietary environment, mutual mate preferences were strong, and the intersexual genetic covariance for mating activity was not different from one. However, in the stressful dietary environment, mutual mate preferences were weak, and the intersexual genetic covariance for mating activity was significantly smaller than one. Altogether, our results show that diet environments affect the expression of genetic variation in mating behaviors: when the environment is stressful, both (a) the strength of mutual mate preference and (b) intersexual genetic covariance for mating activity tend to be weaker. This implies that mating dynamics strongly vary across environments.