NSFDEB-NERC: Ecological Genomics of Adaptive Polymorphism

GSTDTAP

项目编号	NE/P013074/1
	NSFDEB-NERC: Ecological Genomics of Adaptive Polymorphism
	Bonnie Fraser
主持机构	University of Sussex
项目开始年	2017
	2017-03-01
项目结束日期	2018-09-30
资助机构	UK-NERC
项目类别	Research Grant
国家	英国
语种	英语
英文摘要	Accounting for high genetic diversity in ecologically-important traits is a fundamental problem in evolutionary biology. Individuals vary enormously at the genetic level, even within local populations, and we do not understand why. Recent work implicates an advantage to rare types as a critical factor maintaining genetic variation in many species, but we have little understanding of how this process actually unfolds in the wild. To address this gap, we need to (1) understand how ecological and social interactions promote or erode genetic diversity, and (2) link these interactions among organisms directly to the genes underlying the traits that mediate these interactions. This project will link a genetically diverse trait in the Trinidad guppy (Poecilia reticulata) to the ecological and social interactions that shape its evolution, and to the underlying genes that shape this diversity. Our previous work indicates that interactions with predators and with potential mates both favour rare colour patterns in this species. To determine which of the processes is most responsible for promoting diversity, we will collect data on predation risk and mating behaviour in multiple natural populations and relate these data to the degree of genetically-based diversity in colour patterns. Then, using populations and closely related species that vary in their genetic diversity, we will use whole-genome DNA sequencing to identify genes that control this highly variable trait. This will allow us to determine how ecological and molecular processes interact to promote or constrain evolution under balancing selection. Finally, we will directly test the idea that interactions between potential mates can maintain diversity in this species by observing evolution in real time in experimental populations with different opportunities for mate choice.
来源学科分类	Natural Environment Research
文献类型	项目
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/86603
专题	环境与发展全球科技态势
推荐引用方式 GB/T 7714	Bonnie Fraser.NSFDEB-NERC: Ecological Genomics of Adaptive Polymorphism.2017.