DISSERTATION RESEARCH: "Factors contributing to the morphological diversification of darters (Teleostei: Percidae)"

论文研究：“影响蛇鲈形态多样化的因素（Teleostei：鲈科）”

基本信息

批准号：
0710394
负责人：
Peter Wainwright
金额：
$ 0.56万
依托单位：
University of California-Davis
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2007
资助国家：
美国
起止时间：
2007-07-01 至 2009-06-30
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=0710394&HistoricalAwards=false
关键词：
DISSERTATION RESEARCH Factors contributing morphological

项目摘要

The ability to preserve existing biodiversity is best improved by a thorough understanding of the factors that cause changes in both species number (species diversity) and the variety of shapes and sizes exhibited by those species (morphological diversity). To this end, this research quantitatively examines the relationship between the rate of morphological diversification and three factors, extent of geographic range overlap among close relatives, the diversity of physical habitats occupied, and a morphological feature that increases the complexity of a functional system. This study uses groups of species within lineage of North American freshwater fishes known as darters (Teleostei: Percidae) to examine the relationship between each factor and the rate of morphological diversification. Because this study explicitly examines the relationship between geographic range overlap among close relatives and the rate of morphological diversification, the results will indicate whether current conservation methods, specifically the human-mediated establishment of populations of threatened species in new locations, actually induce morphological change rather than act to preserve a species' morphology over long periods of time. In addition, the results will not only provide information about the morphological diversification of darters, they will also suggest whether the three factors have been important in the morphological diversification of other groups of animals and plants.

通过彻底了解导致物种数量（物种多样性）以及这些物种所表现出的形状和大小变化（形态多样性）变化的因素，可以最好地提高保护现有生物多样性的能力。为此，本研究定量研究了形态多样化率与三个因素之间的关系：近亲之间的地理范围重叠程度、所占据的物理栖息地的多样性以及增加功能系统复杂性的形态特征。这项研究使用北美淡水鱼（称为鲈鱼（Teleostei：Percidae））谱系内的物种群体来检查每个因素与形态多样化率之间的关系。由于这项研究明确地考察了近亲之间的地理范围重叠与形态多样化率之间的关系，因此结果将表明当前的保护方法，特别是人类介导的在新地点建立受威胁物种种群的方法，实际上是否会引起形态变化，而不是导致形态变化。而不是长期保护物种的形态。此外，结果不仅将提供有关蛇鲈形态多样化的信息，还将表明这三个因素是否在其他动植物群体的形态多样化中发挥重要作用。