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DISSERTATION RESEARCH: Spatial Analysis of Effective Size and Genetic Structure in Desert Breeding Anurans

论文研究：沙漠育种无尾动物有效体型和遗传结构的空间分析

基本信息

批准号：
0406827
负责人：
Kelly Zamudio
金额：
$ 1.2万
依托单位：
Cornell University
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2004
资助国家：
美国
起止时间：
2004-06-01 至 2006-05-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=0406827&HistoricalAwards=false
关键词：
DISSERTATION RESEARCH Spatial Analysis Effective

项目摘要

The maintenance of genetic diversity has important consequences for population differentiation, persistence, local adaptation, and divergence. Organismal ecology, behavior, and demography influence temporal changes in genetic diversity at local scales and can have important consequences for patterns of genetic structure at larger scales by increasing the role of random evolutionary processes relative to non-random evolutionary processes. This project integrates ecology and population genetics to assess the importance of particular species-specific traits in the preservation of genetic diversity. To disentangle the mechanisms shaping distributions of genetic diversity at multiple spatial scales, this research uses molecular population genetic tools to compare genetic structure in two desert breeding toads with similar ecologies, but very different life-histories. This research will reach beyond the scope of this specific system by contributing to conservation biology as well as education outside of the classroom. The long-term persistence of populations relies on genetic diversity for adaptability to changing environments. By examining how species traits affect the maintenance and distribution of genetic diversity we can better predict the consequence of particular environmental changes and perturbations on population stability and persistence. The field and laboratory components of this research will involve students and community members of all ages and nationalities from a diverse array of backgrounds.

遗传多样性的维持对种群分化、持久性、局部适应和分化具有重要影响。生物生态学、行为学和人口学影响局部尺度上遗传多样性的时间变化，并通过增加随机进化过程相对于非随机进化过程的作用，对较大尺度上的遗传结构模式产生重要影响。该项目整合了生态学和群体遗传学，以评估特定物种特异性特征在遗传多样性保护中的重要性。为了解开在多个空间尺度上的遗传多样性分布的机制，本研究使用分子群体遗传学工具，比较两种具有相似生态但生活史非常不同的沙漠繁殖蟾蜍的遗传结构。这项研究将超越这一特定系统的范围，为保护生物学和课堂外的教育做出贡献。种群的长期生存依赖于遗传多样性，以适应不断变化的环境。通过研究物种性状如何影响遗传多样性的维持和分布，我们可以更好地预测特定环境变化和扰动对种群稳定性和持久性的影响。这项研究的实地和实验室组成部分将涉及来自不同背景的所有年龄和国籍的学生和社区成员。