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Genetics of intersexual selection: conflict and coevolution

间性选择的遗传学：冲突与共同进化

基本信息

批准号：
211132886
负责人：
Professor Dr. Holger Schielzeth
金额：
--
依托单位：
Populationsökologie
依托单位国家：
德国
项目类别：
Independent Junior Research Groups
财政年份：
2012
资助国家：
德国
起止时间：
2011-12-31 至 2017-12-31
项目状态：
已结题

来源：
https://gepris.dfg.de/gepris/projekt/211132886?language=en
关键词：
Genetics intersexual selection conflict coevolution

项目摘要

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.

适应性进化变化是基于选择作用于可遗传性状和选择强度的知识，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，可以导致奢侈装饰的进化，因此是产生生物多样性的驱动力。我将研究蝗虫Gomphocerus sibiricus的两性间协同进化的遗传学。我将估计偏好和装饰的表型方差的遗传和环境成分以及它们之间的遗传相关性。此外，我将量化性选择的强度和环境波动。两性间共同进化的另一个方面是资源分配的性别冲突。这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共同进化，这些工具允许将冲突描述为相互作用的表型系统，其中一个个体的基因影响其他个体的表型。最后，我将阐明性选择性状的分子遗传基础，使用全基因组基因分型的分子标记。这将使得能够鉴定在选择下的数量性状的基础上的功能遗传变体。