Genealogical Concordance and Discordance in The Genetic Structure of Populations

种群遗传结构中的谱系一致性和不一致

• 批准号: 9407131
• 负责人: John Avise
• 金额: $ 22.3万
• 依托单位: University of Georgia Research Foundation Inc
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1995
• 资助国家: 美国
• 起止时间: 1995-01-01 至 1998-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9407131&HistoricalAwards=false
• 关键词: Genealogical; Concordance; Discordance; Genetic; Structure

9407131 Avise In recent years, it has become increasingly clear that geographic populations of most animal species differ from one another genetically, and both historical and contemporary processes can influence these genetic distributions. Less-well appreciated are how closely the patterns of geographic variation in different genes and genetic assays match one another within a species, or how frequently concordant patterns are exhibited across species. Yet such assessments of genealogical concordance are crucial to a number of disciplines ranging from population genetics to systematics to conservation biology. For example, concordant genetic patterns would likely reflect shared elements in the histories of natural selection, population subdivision, and gene flow. Such patterns would also be highly relevant to taxonomic descriptions, and to assessments of within species biodiversity in a conservation context. This project will involve molecular genetic assays of geographic populations within several vertebrate species in the southeastern United States. The intent is to determine whether and how often concordant (as opposed to discordant) genetic patterns exist within these taxa, and to address the historical processes governing such patterns. The goal will be to provide a molecular level assessment of biodiversity in the southeastern region, and to develop a conceptual framework for interpreting and utilizing such information.

小行星9407131 近年来，越来越清楚的是，大多数动物物种的地理种群在遗传上彼此不同，历史和当代的过程都可以影响这些遗传分布。 不太了解的是，不同基因和遗传测定中的地理变异模式在一个物种内相互匹配的程度，或者在不同物种之间表现出一致模式的频率。 然而，这种对系谱一致性的评估对从种群遗传学到系统分类学再到保护生物学的许多学科来说都是至关重要的。 例如，一致的遗传模式可能反映了自然选择、种群细分和基因流动历史中的共同因素。 这种模式也与分类学描述以及在养护背景下对物种内生物多样性的评估高度相关。 该项目将涉及在美国东南部的几个脊椎动物物种的地理种群的分子遗传分析。 其目的是确定是否以及如何经常一致（而不是不一致）的遗传模式存在于这些类群，并解决管理这些模式的历史过程。 目标是对东南部地区的生物多样性进行分子水平的评估，并为解释和利用这些信息制定一个概念框架。