Department of Biology and Centre for Advanced Research in Environmental Genomics, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada.
Evolution. 2011 Mar;65(3):893-9. doi: 10.1111/j.1558-5646.2010.01158.x. Epub 2010 Nov 10.
Mutual mate choice for homologous sexual display traits has been demonstrated in several recent studies yet little attention has been given to quantitative comparison of the strength and form of mate preferences between the sexes. Such comparisons may provide important insight into the evolution of mate choice for honest signals. In particular, because females generally provide the majority of resources for initial offspring development, female displays may trade-off with fecundity, causing preference evolution to differ between the sexes. Recent theory suggests that adaptive male preferences for honest displays in females are possible under certain conditions and may result in preferences that are convex (i.e., stabilizing) in form. We compared sexual selection on a suite of contact pheromones arising from mutual mate choice using nine separate geographic populations of Drosophila serrata. We show that the convex selection is stronger on females than on males overall in these populations, and that convex selection is the predominate form of nonlinear selection on females but not males.
在最近的几项研究中，已经证明了同源性性展示特征的相互配偶选择，但很少有人关注两性之间配偶偏好的强度和形式的定量比较。这种比较可能为诚实信号的配偶选择进化提供重要的见解。特别是，由于女性通常为最初的后代发育提供大部分资源，因此女性的展示可能会与繁殖力产生权衡，从而导致两性之间的偏好进化不同。最近的理论表明，在某些条件下，适应性的雄性对雌性中诚实展示的偏好是可能的，并且可能导致偏好形式呈凸（即稳定）。我们使用 9 个不同的果蝇地理种群来比较由于相互配偶选择而产生的一系列接触信息素的性选择。我们表明，在这些种群中，总体而言，雌性上的凸选择比雄性更强，并且凸选择是雌性而非雄性上非线性选择的主要形式。
