U.S.-Costa Rica: Comparative Biogeography: Phenotypic and Genetic Diversity in Two Wide-Ranging Neotropical Frogs [Dissertation Enhancement, J. M. Robertson, Ph.D. Candidate]

美国-哥斯达黎加：比较生物地理学：两种分布广泛的新热带蛙的表型和遗传多样性[论文增强，J. M. Robertson，博士。

• 批准号: 0506043
• 负责人: Kelly Zamudio
• 金额: $ 1.5万
• 依托单位: Cornell University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2005
• 资助国家: 美国
• 起止时间: 2005-07-01 至 2007-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0506043&HistoricalAwards=false
• 关键词: U.S.; Costa; Rica; Comparative; Biogeography

0506043Zamudio/RobertsonThis Americas Program dissertation research will support Ms. Jeanne M. Robertson under the supervision of Dr. Kelly R. Zamudio of Cornell University and under the sponsorship of Dr. Federico Bolanos Vives, of the University of Costa Rica, San Jose. Ms. Robertson aims to investigate the patterns and underlying processes shaping the geographic distribution of diversity. She will be examining patterns of genetic, phenotypic, and behavioral diversity in two Neotropical frogs in Costa Rica and Panama. The goal of this research is to understand the determinants of variation in two common, lowland frogs, Agalychnis callidryas and Hyla ebraccata, that vary significantly in their degree of regional differentiation. This research combines population genetics, analyses of frog vocalization, and color and pattern polymorphism to investigate the relative roles of vicariance, gene flow, and sexual selection in structuring populations regionally and locally. Ms. Robertson will investigate visual signals used in mate choice to determine the role of sexual selection in maintaining diversity. A significant strength of this study lies in its comparative nature and geographical coverage, which will provide insight into reproductive isolation, directional migration patterns, and historical biogeography of the region. A broader impact of the research is that the ongoing collaboration with Costa Rican herpetologists will form a strong foundation for continued and long-term research in the region.

0506043zamudio/Robertsonthis Americas计划论文研究将在康奈尔大学的Kelly R. Zamudio博士的监督下支持Jeanne M. Robertson女士，并在哥斯达黎加大学的Federico Bolanos Vives博士的赞助下为圣何塞哥斯达黎加大学的Federico Bolanos Vives博士提供支持。罗伯逊女士旨在研究塑造多样性地理分布的模式和基本过程。她将研究哥斯达黎加和巴拿马两种新热带青蛙的遗传，表型和行为多样性的模式。这项研究的目的是了解两种常见的低地青蛙，agalychnis callidryas和hyla ebraccata的变化的决定因素，它们在区域分化的程度上差异很大。这项研究结合了种群遗传学，青蛙发声的分析以及颜色和模式多态性，以研究在区域和本地结构种群中，基因流量和性选择的相对作用。罗伯逊女士将调查伴侣选择中使用的视觉信号，以确定性选择在维持多样性中的作用。这项研究的重要优势在于其比较性质和地理覆盖范围，该覆盖范围将提供有关该地区生殖隔离，定向迁移模式和历史生物地理学的见解。这项研究的一个更广泛的影响是，与哥斯达黎加疱疹学家进行的持续合作将为该地区持续和长期研究构成坚实的基础。