DISSERTATION RESEARCH: Population-level Genetic Differentiation During the Early Stages of a Radiation in Two Reptilian Families.

论文研究：两个爬行动物家族辐射早期阶段的种群水平遗传分化。

• 批准号: 0408010
• 负责人: Christopher Austin
• 金额: --
• 依托单位: Louisiana State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2004
• 资助国家: 美国
• 起止时间: 2004-07-15 至 2007-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0408010&HistoricalAwards=false
• 关键词: DISSERTATION; RESEARCH; Population; level; Genetic

Investigators will study processes responsible for the origin and maintenance of biodiversity on oceanic islands. To uncover the evolutionary processes generating biodiversity within and among island populations, the investigators will use modern DNA techniques to determine population history of representatives of two lizard families with broad Pacific distributions. Genetic data and current methods of genetic data analysis will be used in conjunction with geological data to infer the ways in which populations become isolated and genetically distinct, a crucial first step in speciation. The project will focus on the Vanuatu archipelago a recently emergent island chain located in an area of high species richness in the southwest Pacific Ocean.This project is innovative in its focus on the early stages ( 2 million years) of evolution within an archipelago. Despite the incredible biodiversity of island groups such as Hawaii and the Galapagos islands, biologists do not have a good understanding of the processes essential to the initial development of biodiversity after island emergence. Results will be published in peer-reviewed journals and additional data will be made freely available via the Museum's online databases. As part of this project, a female graduate student will be trained in reptile taxonomy, molecular DNA techniques, and phylogenetic methods. Additionally, a female Vanuatu biodiversity officer will receive training in the taxonomic and biodiversity survey methods crucial to the conservation of the poorly studied, yet highly threatened, reptile fauna of the Vanuatu archipelago.

调查人员将研究海洋岛屿生物多样性起源和维持的过程。为了揭示在岛屿种群内部和之间产生生物多样性的进化过程，研究人员将使用现代DNA技术来确定在太平洋广泛分布的两个蜥蜴科代表的种群历史。遗传数据和目前的遗传数据分析方法将与地质数据结合使用，以推断种群分离和遗传上不同的方式，这是物种形成的关键第一步。该项目将重点关注瓦努阿图群岛，这是一个最近出现的岛链，位于西南太平洋物种丰富的地区。这个项目的创新之处在于它专注于群岛的早期进化阶段（200万年）。尽管夏威夷和加拉帕戈斯群岛等岛屿群具有令人难以置信的生物多样性，但生物学家对岛屿出现后生物多样性最初发展的关键过程并没有很好的理解。结果将发表在同行评议的期刊上，其他数据将通过博物馆的在线数据库免费提供。作为该项目的一部分，一名女研究生将接受爬行动物分类学、分子DNA技术和系统发育方法方面的培训。此外，一名瓦努阿图生物多样性女性官员将接受分类和生物多样性调查方法的培训，这些方法对保护瓦努阿图群岛研究较少但受到高度威胁的爬行动物动物群至关重要。