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IRCEB: The Life History-Physiology Nexus--Constraints on the Evolutionary Diversification of Avian Life Histories

IRCEB：生命史-生理学关系--鸟类生命史进化多样化的限制

基本信息

批准号：
0212587
负责人：
Robert Ricklefs
金额：
$ 260万
依托单位：
University of Missouri-Saint Louis
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2003
资助国家：
美国
起止时间：
2003-01-01 至 2008-12-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=0212587&HistoricalAwards=false
关键词：
IRCEB Life History Physiology Nexus

项目摘要

This project brings together a team of ecologists and physiologists to investigate how physiological mechanisms constrain the evolution of parental investment and self-maintenance in tropical and temperate environments. Life-history theory predicts that long-lived organisms should allocate more resources to enhancing survival, thereby protecting future reproduction, at the expense of current reproduction. Many of the predicted responses of physiology and behavior are controlled by endocrine and immune system mechanisms that establish incompatible physiological states and limit individual responses of organisms and evolved responses of populations. This collaborative study will compare related species of birds living in contrasting tropical and temperate environments to determine population parameters (adult survival and reproductive rate) and physiological and behavioral responses. Incorporating a strongly developed student-training component in the project, measurements will include activity, metabolism, health status, and endocrine profiles in the field, and metabolism, hormonal stress response, and immune system response in the laboratory. Analysis and interpretation of these data will relate variation in life-history attributes to phylogenetic relationship, region, and ecological measures of habitat, diet, and predator environment. This project is unique in that it integrates studies in ecology, physiology, and demography to focus on major patterns of diversification of life histories.

该项目汇集了一个生态学家和生理学家团队，研究生理机制如何限制热带和温带环境中亲本投资和自我维持的演变。生活史理论预测，长寿的生物体应该分配更多的资源来提高生存率，从而保护未来的繁殖，而牺牲当前的繁殖。许多预测的生理和行为反应是由内分泌和免疫系统机制控制的，这些机制建立了不相容的生理状态，并限制了生物体的个体反应和种群的进化反应。这项合作研究将比较生活在热带和温带环境中的相关鸟类物种，以确定种群参数（成年存活率和繁殖率）以及生理和行为反应。在该项目中加入了一个强大的学生培训部分，测量将包括活动，代谢，健康状况和内分泌概况，以及实验室中的代谢，激素应激反应和免疫系统反应。这些数据的分析和解释将涉及到生活史属性的变化，系统发育关系，区域和生态措施的栖息地，饮食和捕食环境。该项目的独特之处在于它整合了生态学，生理学和人口统计学的研究，专注于生活史多样化的主要模式。