Can non-directional male mating preferences facilitate honest female ornamentation?
Can non-directional male mating preferences facilitate honest female ornamentation?
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DOI：
10.1111/j.1461-0248.2005.00867.x
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发表时间：
2006-02-01
期刊：
影响因子：
8.8
通讯作者：
Kokko, H
中科院分区：
文献类型：
--
作者：
Chenoweth, SF;Doughty, P;Kokko, H
最近的研究表明，在没有性别角色转换的物种中，雄性对雌性装饰品的选择。尽管有这些实证研究结果，但对雌性信号的适应动力学知之甚少，特别是雄性交配偏好的进化。表明配偶质量的特征的进化在雌性中比在雄性中更为复杂，因为雌性通常为发育中的后代提供大部分资源。在这里，我们使用一个数学模型来研究雄性交配偏好的演变：(i)具体说明了雌性必须权衡投入在装饰品上的资源与生殖的事实；（ii）允许雄性交配偏好进化出一种非定向形状。雄性的最佳适应策略是发展对雌性展示特征的稳定交配偏好，以避免雌性在装饰上投入太多或太少的资源。然而，这种预测的进化稳定性取决于雌性在分配资源给信号或繁殖能力时所犯的错误程度。
Recent studies have demonstrated male mate choice for female ornaments in species without sex-role reversal. Despite these empirical findings, little is known about the adaptive dynamics of female signalling, in particular the evolution of male mating preferences. The evolution of traits that signal mate quality is more complex in females than in males because females usually provide the bulk of resources for the developing offspring. Here, we investigate the evolution of male mating preferences using a mathematical model which: (i) specifically accounts for the fact that females must trade-off resources invested in ornaments with reproduction; and (ii) allows male mating preferences to evolve a non-directional shape. The optimal adaptive strategy for males is to develop stabilizing mating preferences for female display traits to avoid females that either invests too many or too few resources in ornamentation. However, the evolutionary stability of this prediction is dependent upon the level of error made by females when allocating resources to either signal or fecundity.