Color, Sex and Speciation of Lake Malawi Cichlid Fishes

马拉维湖慈鲷鱼的颜色、性别和物种

• 批准号: 0445212
• 负责人: Thomas Kocher
• 金额: --
• 依托单位: University of New Hampshire
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2005
• 资助国家: 美国
• 起止时间: 2005-03-01 至 2008-02-29
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0445212&HistoricalAwards=false
• 关键词: Color; Sex; Speciation; Lake; Malawi

The extensive radiations of cichlid fishes in the lakes of East Africa are an ideal system for studying the ecological and genetic factors that promote speciation. This project will examine whether the evolution of new sex chromosomes, in combination with linked color polymorphisms, has been important in the speciation of Lake Malawi cichlids. Molecular markers will be used to genetically map the genes controlling sex determination and color polymorphisms in the highly polymorphic genus Metriaclima. Phylogenetic analysis will determine whether recently evolved color patterns are linked to the evolution of new sex chromosomes. These data will provide key empirical data to evaluate whether genetic conflict over sex ratio is important to the spectacular radiation of these fishes, and by extension to the evolution of many other animal species. The project will also provide training opportunities for undergraduates in the form of well-defined research projects for summer internships and senior theses. The highly interdisciplinary nature of the research program will provide a fertile training ground for graduate and postdoctoral research. The results of the research will be communicated to cichlid aquarists and the general public through an existing www site.

东非湖泊中的丽鱼科鱼的广泛辐射是研究促进物种形成的生态和遗传因素的理想系统。 该项目将检查新的性染色体的演变以及连接的色多态性的结合在马拉维湖丽鱼科学的形态中很重要。 分子标记将用于遗传绘制控制性别测定和高度多态性属属中色素多态性的基因。 系统发育分析将确定最近进化的颜色模式是否与新的性染色体的演变有关。这些数据将提供关键的经验数据，以评估性别比例上的遗传冲突对于这些鱼类的壮观辐射以及扩展到许多其他动物物种的进化是否重要。 该项目还将以针对暑期实习和高级论文定义的研究项目的形式为大学生提供培训机会。 研究计划的高度跨学科性质将为研究生和博士后研究提供肥沃的培训场。 研究结果将通过现有的www网站传达给丽鱼科水族馆和公众。