International Postdoctoral Fellows Program: The Cost of Acclimation

9424091 Berrigan国际初级研究员和博士后研究员计划使美国科学家和工程师能够在国外进行3至24个月的研究。该项目的奖项提供了联合研究的机会，并提供了使用国外独特或互补的设施、专业知识和实验条件的机会。该奖项将支持David A.Berrigan博士为期12个月的博士后研究访问，与澳大利亚La Trobe大学的Ary A.Hoffmann博士合作。适应是对环境变异性的一种重要的生理适应，环境变异性是对温度、干燥和盐度等各种环境胁迫的响应。贝里根博士提出了三种方法来评估适应反应的分布，并衡量它们的成本和收益。首先，他将调查一些澳大利亚果蝇(果蝇)对热和冷的适应反应。其次，他计划结合生活史和生理测试来估算适应热或冷的成本。第三，他将通过对有和没有适应反应的物种的比较研究，在实验上区分暴露在极端温度下的伤害和驯化的成本。目标是利用这些测量来开发适应反应对温度的演变模型。***

9424091 Berrigan The International Junior Investigator and Postdoctoral Fellows Program enables U.S. scientists and engineers to conduct three to twenty-four months of research abroad. The program's awards provide opportunities for joint research, and the use of unique or complementary facilities, expertise and experimental conditions abroad. This award will support a twelve-month postdoctoral research visit by Dr. David A. Berrigan to work with Dr. Ary A. Hoffmann at La Trobe University in Australia. Acclimation is an important physiological adaptation to environmental variability, which occurs in response to a variety of environmental stresses such as temperature, desiccation and salinity. Dr. Berrigan proposes three approaches to assess the distribution of acclimation responses and to measure their costs and benefits. First, he will survey a number of Australian fruit flies, (species Drosophila) for acclimation responses to heat and cold. Second, he plans to estimate the cost of acclimation to heat or cold using a combination of life history and physiological assays. Third, he will experimentally distinguish between injury from exposure to temperature extremes and the costs of acclimation using comparative studies of species with and without acclimation responses. The goal is to use these measurements to develop models for the evolution of acclimation responses to temperature. ***