International Postdoctoral Fellows Program: The Cost of Acclimation

9424091 Berrigan国际青年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三到二十四个月的研究。该计划的奖励为联合研究提供了机会，并利用独特或互补的设施、专业知识和国外的实验条件。该奖项将支持David a. Berrigan博士与Ary a. Hoffmann博士在澳大利亚拉筹伯大学进行为期12个月的博士后研究访问。驯化是对环境变异性的重要生理适应，是对温度、干燥和盐度等各种环境胁迫的反应。Berrigan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（果蝇种类）对热和冷的适应反应。其次，他计划结合生命史和生理分析来估计适应高温或低温的成本。第三，他将通过实验区分暴露在极端温度下的伤害和适应的代价，通过对有和没有适应反应的物种进行比较研究。目标是利用这些测量来开发适应温度反应的进化模型。＊＊＊

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. ***