Dissertation Research: Phylogeography of Tympanuchus Cupido

论文研究：Tympanuchus Cupido 的系统发育地理学

基本信息

批准号：
0206573
负责人：
Peter Dunn
金额：
$ 0.95万
依托单位：
University of Wisconsin-Milwaukee
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2002
资助国家：
美国
起止时间：
2002-07-01 至 2003-06-30
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=0206573&HistoricalAwards=false
关键词：
Dissertation Research Phylogeography Tympanuchus Cupido

项目摘要

Habitat fragmentation and small population size may lead to a decrease in genetic variation and, consequently, the long-term viability of populations. New molecular genetic techniques have been developed to identify changes in genetic variation over time from contemporary samples. However, these techniques have rarely been tested in species in which both historic and contemporary patterns of genetic variation are known. This research will examine the power of these techniques to reconstruct historic patterns of genetic variation in greater prairie chickens, a species of grouse that formerly occurred throughout the prairies of midwestern North America and is now found in fragmented populations, some of which are threatened with extinction. Historic patterns of genetic variation will be obtained from mitochondrial DNA sequences of museum specimens collected prior to habitat fragmentation and population decline (1872-1950). These will be compared to already analyzed sequences from contemporary populations. This analysis of both contemporary and historic populations will provide empirical support for several critical assumptions of new molecular techniques and an extraordinarily detailed picture of population processes during the decline of a threatened species. From a conservation perspective, this information will also be essential for delineating management units and identifying populations that may be suitable for translocation programs.

栖息地破碎和人口较小的人口大小可能导致遗传变异的减少，从而导致人口的长期生存能力。已经开发了新的分子遗传技术，以鉴定随着时间的流逝，从当代样品中识别遗传变异的变化。然而，这些技术很少在遗传变异的历史和当代模式的物种中进行测试。这项研究将研究这些技术在大草原鸡中重建遗传变异的历史模式的力量，这是一种以前发生在北美中西部北美大草原的松鸡，现在在零散的人群中发现，其中一些人受到灭绝的威胁。遗传变异的历史模式将从在栖息地破碎和种群下降之前收集的博物馆标本的线粒体DNA序列获得（1872-1950）。这些将与已经分析的当代人群的序列进行比较。对当代和历史群体的分析将为新分子技术的几个关键假设提供经验支持，并在受威胁物种衰落期间对人口过程的详尽介绍。从保护的角度来看，此信息对于描述管理部门并确定可能适合易位计划的人群也将是必不可少的。