Dissertation Research: Factors Influencing Evolutionary and Ecological Patterns of Body Size in North American Freshwater Fishes

论文研究：影响北美淡水鱼体型进化和生态模式的因素

• 批准号: 0073156
• 负责人: Geoffrey Levin
• 金额: $ 0.54万
• 依托单位: University of Illinois at Urbana-Champaign
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2000
• 资助国家: 美国
• 起止时间: 2000-07-01 至 2001-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0073156&HistoricalAwards=false
• 关键词: Dissertation; Research; Factors; Influencing; Evolutionary

0073156PageThis research examines patterns of body size in North American freshwater fishes at evolutionary, and regional and local community levels. Ecological and other factors related to observed patterns will be identified. Preliminary results contradict patterns commonly seen in paleontological studies by describing an evolutionarily decreasing trend in body size in seven of nine families of fishes. Preliminary analyses of regional communities indicate that body size increases with latitude. Results of this research will lead to a much better understanding of the factors responsible for variation in body size and are likely to be applicable to other groups of organisms.

本研究考察了北美淡水鱼在进化、区域和地方群落水平上的体型模式。将确定与观察到的模式有关的生态和其他因素。初步结果与古生物学研究中常见的模式相矛盾，它描述了9科鱼类中有7科的体型在进化上呈下降趋势。对区域群落的初步分析表明，体型随纬度的增加而增加。这项研究的结果将使我们更好地了解导致体型变化的因素，并可能适用于其他生物群体。