Genetics of intersexual selection: conflict and coevolution

适应性进化变化建立在选择的基础上，作用于可遗传特征和关于选择强度的知识，而遗传力允许预测对选择的反应。性选择是一种特别强大的力量，可以导致奢侈的装饰品的进化，因此是产生生物多样性的驱动力。我将研究蝗虫Gomphocerus siBiricus两性间共同进化的遗传学。我将估计偏好和装饰品表型差异的遗传和环境成分，以及它们之间的遗传相关性。此外，我将量化性选择强度和环境波动的强度。两性共同进化的另一个方面是关于资源分配的性别冲突。这一点在混杂交配系统中尤为明显。我将使用数量遗传学的工具来解决对抗性的共同进化，该工具允许将冲突描述为一个相互作用的表型系统，在这个系统中，一个人的基因影响其他人的表型。最后，我将使用全基因组范围的分子标记基因分型来阐明性别选择特征的分子遗传学基础。这将使鉴定在选择下的数量性状的功能遗传变异成为可能。

Adaptive evolutionary change is based on selection acting on heritable traits and knowledge about the strength of selection and the heritability allows predicting the response to selection. Sexual selection is a particularly potent force that can result in the evolution of extravagated ornaments and is therefore a driving force for generating biological diversity. I will study the genetics of intersexual coevolution in the grasshopper Gomphocerus sibiricus. I will estimate the genetic and environmental components of phenotypic variance in preferences and ornaments and the genetic correlations between them. Furthermore, I will quantify the strength and environmental fluctuation in the strength of sexual selection. Another aspect of intersexual coevolution is sexual conflict over resource allocation. This is particularly pronounced in a promiscuous mating system. I will address antagonistic coevolution using the tools of quantitative genetics that allow describing the conflict as a system of interacting phenotypes, in which the genes of one individual influence the phenotypes of other individuals. Finally, I will elucidate the molecular genetic basis of sexually selected traits using genome-wide genotyping of molecular markers. This will enable the identification of functional genetic variants underlying the quantitative traits under selection.