Collaborative Research: A Comprehensive Multigene Phylogeny of Chipmunks (Rodentia: Tamias): Testing Divergence with Gene Flow

合作研究：花栗鼠（啮齿动物：Tamias）的综合多基因系统发育：用基因流测试分歧

基本信息

批准号：
0716200
负责人：
John Demboski
金额：
$ 20万
依托单位：
Denver Museum of Nature and Science
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2007
资助国家：
美国
起止时间：
2007-09-15 至 2011-08-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=0716200&HistoricalAwards=false
关键词：
Collaborative Research Comprehensive Multigene Phylogeny

项目摘要

Determining the frequency and impact of hybridization during animal speciation remains a central issue in evolutionary biology. This project will investigate hybridization and the evolution of chipmunks in western North America. Chipmunks represent an excellent study system due to their obvious segregation into distinct habitats, and resulting narrow zones of contact between species. In addition, they are characterized by differentiation of reproductive anatomy between species, suggesting reproductive isolation. The investigators have identified numerous instances where gene flow occurs between ecologically and anatomically distinct species, suggesting hybridization may be important during the evolution of this and other groups. The investigators will test predictions of divergence with gene flow using population-level genetic markers and will also estimate a phylogeny of the genus using a diverse array of molecular data sets. This project represents a collaboration between an EPSCoR-supported research university and a large public natural history museum, thus providing numerous opportunities for the dissemination of information to the scientific community and the general public. Important training opportunities for students in field biology, molecular biology, phylogenetic methods, and computational biology will be achieved. The project also includes a significant collecting effort and will therefore contribute to biological infrastructure represented by natural history collections.

确定动物形成过程中杂交的频率和影响仍然是进化生物学的核心问题。该项目将调查北美西部的杂交和花栗鼠的演变。花栗鼠代表了一个出色的研究系统，因为它们的明显隔离为不同的栖息地，并导致物种之间的接触狭窄区域。此外，它们的特征是物种之间生殖解剖结构的分化，表明生殖分离。研究人员已经确定了许多实例，这些实例在生态和解剖上不同的物种之间发生基因流动，这表明在该组和其他群体的进化过程中，杂交可能很重要。研究人员将使用人群水平的遗传标记来测试基因流与基因流的差异的预测，还将使用各种分子数据集估算该属的系统发育。该项目代表了EPSCOR支持的研究大学与大型公共自然历史博物馆之间的合作，从而为科学界和公众提供了许多机会来传播信息。将实现现场生物学，分子生物学，系统发育方法和计算生物学的重要培训机会。该项目还包括一项重大的收集工作，因此将有助于自然历史收集代表的生物基础设施。