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. ***

小行星9417252 这个美洲计划奖将支持豪尔赫萨拉查布拉沃，玻利维亚博士生的博士学位论文研究工作的指导下，特里L。耶茨在新墨西哥州大学。 这项关于南美洲鼠科啮齿动物的历史地理学和系统关系的研究将在厄瓜多尔进行。 研究人员将使用sigmodontine啮齿动物（一种广泛分布于南美大陆的小鼠属）来测试目前南美洲两种小鼠进化模型。 假设有具体的预测的形式，区域分支图，可以使用分支的方法进行测试，但这两个模型都没有得到充分的测试。 该项目将估计的系统发育关系的两个遥远的相关属的sigmodontine啮齿动物，基于线粒体DNA序列数据的分支分析和外群与其他密切相关的属的比较。 如果两个假设都不符合系统发育关系，则将检验替代假设。 该项目将有利于宏观生态学和地理学领域，因为它将揭示在地方和大陆范围内决定物种丰富程度的历史因素，这反过来将有助于确定和加强可能值得保护的地区。 这些结果也可以与鸟类生物学家和其他人的结果结合使用，以加强和/或修改南美洲开阔植被进化的假设。 ***