Physiological Signatures of Thermal Tolerance and Local Adaptation in Fishes

鱼类耐热性和局部适应的生理特征

• 批准号: RGPIN-2017-05479
• 负责人: Jeffries, Kenneth
• 金额: $ 1.89万
• 依托单位: University of Manitoba
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2017
• 资助国家: 加拿大
• 起止时间: 2017-01-01 至 2018-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=630844
• 关键词: Physiological; Signatures; Thermal; Tolerance; Local

Understanding how different populations respond to changing environmental conditions throughout their species’ distributions is fundamental to the conservation of fishes. Temperature is one of the major environmental factors that determines the distributions of fishes. Phenotypic plasticity along with genomic divergence leads to differences in thermal tolerance phenotypes expressed among populations along environmental gradients. The mechanisms that lead to population-specific responses to high water temperatures in fishes are poorly understood. The long-term goal of my research program is to identify the physiological mechanisms involved in population-specific differences in thermal tolerance and to characterize the physiological signatures of local adaptation in fishes across large environmental gradients. I will use gene expression profiling and physiological assessments to identify responses to high water temperatures among fish populations throughout their natural and introduced ranges. In addition to their significant cultural, economic and ecological importance, Chinook salmon (

了解不同种群在其物种分布过程中如何对不断变化的环境条件作出反应是鱼类保护的基础。温度是决定鱼类分布的主要环境因子之一。表型可塑性沿着基因组分化，导致沿着环境梯度的种群间耐热性表型表达差异。导致鱼类对高水温的群体特异性反应的机制知之甚少。我的研究计划的长期目标是确定参与群体特异性耐热性差异的生理机制，并描述鱼类在大环境梯度中局部适应的生理特征。我将使用基因表达谱和生理评估，以确定整个自然和引进范围的鱼类种群对高水温的反应。除了具有重要的文化、经济和生态意义外，奇努克鲑鱼（