Americas Program Dissertation Enhancement Research: Historical Biogeography and Systematic Relationships of South American Murid Rodents

美洲计划论文强化研究：南美啮齿类动物的历史生物地理学和系统关系

• 批准号: 9417252
• 负责人: Terry Yates
• 金额: $ 2.08万
• 依托单位: University of New Mexico
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1994
• 资助国家: 美国
• 起止时间: 1994-10-15 至 1998-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9417252&HistoricalAwards=false
• 关键词: Americas; Program; Dissertation; Enhancement; Research

9417252 Yates This Americas Program award will support the dissertation research of Jorge Salazar-Bravo, a Bolivian doctoral student working under the direction of Dr. Terry L. Yates at the University of New Mexico. The research, on the historical biogeography and systematic relationships of South American Murid rodents, will take place in Ecuador. The researcher will test two current models of murid evolution in South America using sigmodontine rodents, a genus of mice widely distributed on the continent. The hypotheses have specific predictions in the form of area cladograms that can be tested using a cladistic approach, but neither of the two models have been adequately tested. This project will estimate the phylogenetic relationships of two distantly related genera of the sigmodontine rodents, based on the cladistic analysis of mitochondrial DNA sequence data and outgroup comparisons with other closely related genera. If neither of the hypotheses fit the phylogenetic relationships, alternative hypotheses will be tested. This project will benefit the areas of macroecology and biogeography because it will shed light on historical factors that determine species richness at the local and continental scale, which, in turn, will help in defining and strengthening areas of potential interest for conservation purposes. The results may also be used in combination with those of avian biologists and others to strengthen and/or revise hypotheses of the evolution of open vegetation in South America. ***

9417252 Yates这项美洲计划奖将支持乔治·萨拉萨·布拉沃（Jorge Salazar-Bravo）的论文研究，后者是一名玻利维亚博士生，在新墨西哥大学特里·耶茨（Terry L. Yates）的指导下工作。 这项研究将在厄瓜多尔进行有关南美鼠类啮齿动物的历史生物地理和系统关系。 研究人员将使用Sigmodontine Rodents测试南美的两个当前Murid进化模型，Sigmodontine啮齿动物是大陆上广泛分布的小鼠属。 这些假设以可以使用cladistic方法进行测试的面积膜图的形式具有特定的预测，但是两个模型都没有经过充分的测试。 该项目将基于线粒体DNA序列数据的覆盖分析和与其他密切相关的属的外部比较，估算两个sigmodontine啮齿动物的两个远距离相关属的系统发育关系。 如果两个假设都不适合系统发育关系，则将测试替代假设。 该项目将受益于宏观生态学和生物地理学领域，因为它将阐明确定当地和大陆规模的物种丰富度的历史因素，这反过来又有助于定义和加强潜在感兴趣的领域，以保护保护目的。 结果也可以与鸟类生物学家和其他人的结合使用，以加强和/或修改南美开放植被进化的假设。 ***