Mechanisms of sex-specific reproductive timing and migratory movements in seasonal environments

季节性环境中性别特异性繁殖时间和迁徙运动的机制

• 批准号: RGPIN-2015-05361
• 负责人: Morbey, Yolanda
• 金额: $ 1.53万
• 依托单位: University of Western Ontario
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2015
• 资助国家: 加拿大
• 起止时间: 2015-01-01 至 2016-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=590380
• 关键词: Mechanisms; sex; specific; reproductive; timing

Evidence from around the Earth indicates that climate regimes are shifting, and society now faces the question: can animals keep pace with the rate of environmental change? In seasonal environments like those of Canada, the timing of migration and reproduction strongly influences reproductive fitness in animals. Yet optimal timing can be sex-specific and difficult to achieve in environments that vary at multiple spatial and temporal scales. To predict responses of populations accurately, we need to strengthen our understanding of how individuals anticipate seasonal change and respond to environmental variability. We also can no longer ignore sex differences in the timing of migration and reproduction, because the way individuals respond to abiotic and biotic factors likely will be sex-specific. My research program is uncovering key mechanisms that influence how males and females time their migratory and reproductive events in response to environmental factors. My proposed research will focus on two vertebrate groups that are migratory, highly seasonal, and exhibit sex-specific timing: Pacific salmon and North American warblers.

来自地球各地的证据表明，气候制度正在发生变化，社会现在面临的问题是：动物能跟上环境变化的速度吗？在像加拿大这样的季节性环境中，迁徙和繁殖的时间对动物的生殖健康有很大的影响。然而，最佳时机可能因性别而异，在多个时空尺度变化的环境中难以实现。为了准确预测种群的反应，我们需要加强对个体如何预测季节变化和对环境变化做出反应的理解。我们也不能再忽视迁徙和繁殖时间的性别差异，因为个体对非生物和生物因素的反应方式可能是性别特异性的。我的研究项目是揭示影响雄性和雌性如何根据环境因素调整迁徙和繁殖时间的关键机制。我提议的研究将集中在两种迁徙的、高度季节性的、表现出性别特异性的脊椎动物群体：太平洋鲑鱼和北美林莺。