Dissertation Research: Variation in Diet and Functional Morphology Among Populations of Cyprinodon variegatus in the Everglades National Park

论文研究：大沼泽国家公园杂色鲤种群的饮食和功能形态变化

• 批准号: 9600108
• 负责人: Nelson Hairston
• 金额: --
• 依托单位: Cornell University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1996
• 资助国家: 美国
• 起止时间: 1996-08-15 至 1999-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9600108&HistoricalAwards=false
• 关键词: Dissertation; Research; Variation; Diet; Functional

9600108. HAIRSTON Organisms have a wide range of adaptations to life in a changing environment. Among fish, jaw morphology is often related to diet, which varies between seasons and populations. Linking environmental variation with morphological variation can provide insights into the causes of character variation observed in nature. In research funded by this award, killifish (Cyprinodon variegatus) populations on mangrove islands in Florida Bay will be studied to assess the ways in which temporal and spatial variation in diet produce and maintain differences in jaw shape and size. Environmental variation in food resources and food utilization by populations of killifish inhabiting two distinct habitats (bay and island pools) will be documented. Variation in feeding morphology among these populations will then be assayed to elucidate the environmental and genetic contributions to morphological variation. In a related study, the developmental basis of diet-specific feeding efficiency will be assessed. The research will shed light on a longstanding issue in population biology, how morphological variation is produced and maintained in a changing environment. Because such variation provides the fuel for species to cope with environmental change, the research has implications for conservation biology and habitat management.

9600108.HAIRSTON 生物体对不断变化的环境中的生活具有广泛的适应能力。 在鱼类中，下颌形态通常与饮食有关，饮食因季节和种群而异。 将环境变化与形态变化联系起来可以深入了解自然界中观察到的性状变化的原因。在该奖项资助的研究中，将对佛罗里达湾红树林岛屿上的鳉鱼（Cyprinodon variegatus）种群进行研究，以评估饮食的时间和空间变化如何产生和维持下颌形状和大小的差异。 将记录栖息在两个不同栖息地（海湾和岛屿水池）的鳉鱼种群食物资源和食物利用的环境变化。然后将分析这些种群摄食形态的变化，以阐明环境和遗传对形态变化的贡献。在一项相关研究中，将评估特定饮食喂养效率的发育基础。 这项研究将揭示种群生物学中一个长期存在的问题，即形态变异是如何在不断变化的环境中产生和维持的。 由于这种变异为物种应对环境变化提供了燃料，因此这项研究对保护生物学和栖息地管理具有重要意义。