Mediation of optimal reproductive decisions by maternal stress

母亲压力对最佳生殖决策的调节

基本信息

  • 批准号:
    RGPIN-2015-06724
  • 负责人:
  • 金额:
    $ 3.57万
  • 依托单位:
  • 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

项目摘要

Population and ecosystem health are driven by the capacity of individuals to maximize their fitness under continuously changing environmental conditions. Since physiological function directly mediates the relationship of the organism to its environment, physiological traits are useful to study as regulators of the life-history decisions and trade-offs that shape variation in fitness. However, despite much theoretical work predicting expected relationships between physiology and ecological or environmental processes, many physiological traits fail to show consistent individual-level variation, cannot be universally applied across diverse taxa, or are hard to experimentally manipulate in wild systems. Steroid hormones are now recognized to be critically involved in the adaptation and evolution of complex traits. Baseline levels of ‘stress’ hormones are fantastic candidates for mediating investment decisions both within and among individuals since they regulate daily and seasonal energetic balance in vertebrates. Although recent work has focused on trying to link stress hormones directly to fitness, these studies often find equivocal results. Very few studies are designed to interpret more complex, but likely more biologically relevant, linkages between baseline stress hormones and fitness. The research program and associated projects outlined in this application are designed to answer some of these fundamental, and yet currently missing, questions. I am specifically going to test whether baseline stress hormones: i) integrate individual and environmental variability, ii) prepare individuals for the performance demands of energetically expensive life-history stages, iii) mediate adaptive investment decisions, and therefore fitness, and iv) modulate their trade-off and fitness effects via ecological and life-history level contexts. This type of mechanistic information is not only very important for basic exploratory scientific studies, but it is increasingly key and needed in applied research to increase the predictive power of how we expect individuals and populations breeding in sensitive ecosystems like the Arctic to fair and respond as they face increasingly numbers of human-induced stressors.
人口和生态系统的健康是由个体在不断变化的环境条件下最大限度地提高其适应能力的能力所驱动的。由于生理功能直接介导生物体与其环境的关系,因此生理性状作为生活史决策和权衡的调节器进行研究是有用的,这些决策和权衡塑造了适应性的变化。然而,尽管有许多理论工作预测生理学和生态或环境过程之间的预期关系,许多生理性状未能显示一致的个体水平的变化,不能普遍适用于不同的类群,或很难在野生系统中进行实验操作。类固醇激素现在被认为是至关重要的参与适应和复杂性状的进化。“压力”激素的基线水平是调节个体内部和个体之间投资决策的绝佳候选者,因为它们调节脊椎动物的日常和季节性能量平衡。尽管最近的研究集中在试图将压力荷尔蒙与健康直接联系起来,但这些研究往往发现模棱两可的结果。很少有研究旨在解释更复杂的,但可能更生物相关的,基线压力激素和健身之间的联系。本申请中概述的研究计划和相关项目旨在回答这些基本但目前缺失的问题。我特别要测试基线压力激素是否:i)整合个体和环境的变化,ii)为个体准备能量昂贵的生命史阶段的性能要求,iii)调解适应性投资决策,因此健身,iv)通过生态和生命史水平的背景来调节他们的权衡和健身效果。这种类型的机械信息不仅对基础探索性科学研究非常重要,而且在应用研究中越来越关键和需要,以提高我们对在北极等敏感生态系统中繁殖的个体和种群的预测能力,以公平和应对越来越多的人为压力。

项目成果

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Love, Oliver其他文献

Love, Oliver的其他文献

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{{ truncateString('Love, Oliver', 18)}}的其他基金

Integrative Ecology
综合生态学
  • 批准号:
    CRC-2017-00246
  • 财政年份:
    2022
  • 资助金额:
    $ 3.57万
  • 项目类别:
    Canada Research Chairs
Examining mechanistic pathways driving the adaptive capacity of Arctic birds to respond to environmental change
检查驱动北极鸟类应对环境变化的适应能力的机制途径
  • 批准号:
    RGPNS-2020-05507
  • 财政年份:
    2022
  • 资助金额:
    $ 3.57万
  • 项目类别:
    Discovery Grants Program - Northern Research Supplement
Examining mechanistic pathways driving the adaptive capacity of Arctic birds to respond to environmental change
检查驱动北极鸟类应对环境变化的适应能力的机制途径
  • 批准号:
    RGPIN-2020-05507
  • 财政年份:
    2022
  • 资助金额:
    $ 3.57万
  • 项目类别:
    Discovery Grants Program - Individual
Integrative Ecology
综合生态学
  • 批准号:
    CRC-2017-00246
  • 财政年份:
    2021
  • 资助金额:
    $ 3.57万
  • 项目类别:
    Canada Research Chairs
Examining mechanistic pathways driving the adaptive capacity of Arctic birds to respond to environmental change
检查驱动北极鸟类应对环境变化的适应能力的机制途径
  • 批准号:
    RGPNS-2020-05507
  • 财政年份:
    2021
  • 资助金额:
    $ 3.57万
  • 项目类别:
    Discovery Grants Program - Northern Research Supplement
Examining mechanistic pathways driving the adaptive capacity of Arctic birds to respond to environmental change
检查驱动北极鸟类应对环境变化的适应能力的机制途径
  • 批准号:
    RGPIN-2020-05507
  • 财政年份:
    2021
  • 资助金额:
    $ 3.57万
  • 项目类别:
    Discovery Grants Program - Individual
Integrative Ecology
综合生态学
  • 批准号:
    CRC-2017-00246
  • 财政年份:
    2020
  • 资助金额:
    $ 3.57万
  • 项目类别:
    Canada Research Chairs
Examining mechanistic pathways driving the adaptive capacity of Arctic birds to respond to environmental change
检查驱动北极鸟类应对环境变化的适应能力的机制途径
  • 批准号:
    RGPIN-2020-05507
  • 财政年份:
    2020
  • 资助金额:
    $ 3.57万
  • 项目类别:
    Discovery Grants Program - Individual
Examining mechanistic pathways driving the adaptive capacity of Arctic birds to respond to environmental change
检查驱动北极鸟类应对环境变化的适应能力的机制途径
  • 批准号:
    RGPNS-2020-05507
  • 财政年份:
    2020
  • 资助金额:
    $ 3.57万
  • 项目类别:
    Discovery Grants Program - Northern Research Supplement
Mediation of optimal reproductive decisions by maternal stress
母亲压力对最佳生殖决策的调节
  • 批准号:
    RGPIN-2015-06724
  • 财政年份:
    2019
  • 资助金额:
    $ 3.57万
  • 项目类别:
    Discovery Grants Program - Individual

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Mediation of optimal reproductive decisions by maternal stress
母亲压力对最佳生殖决策的调节
  • 批准号:
    RGPIN-2015-06724
  • 财政年份:
    2019
  • 资助金额:
    $ 3.57万
  • 项目类别:
    Discovery Grants Program - Individual
Mediation of optimal reproductive decisions by maternal stress
母亲压力对最佳生殖决策的调节
  • 批准号:
    391553-2015
  • 财政年份:
    2019
  • 资助金额:
    $ 3.57万
  • 项目类别:
    Discovery Grants Program - Northern Research Supplement
Mediation of optimal reproductive decisions by maternal stress
母亲压力对最佳生殖决策的调节
  • 批准号:
    RGPIN-2015-06724
  • 财政年份:
    2018
  • 资助金额:
    $ 3.57万
  • 项目类别:
    Discovery Grants Program - Individual
Mediation of optimal reproductive decisions by maternal stress
母亲压力对最佳生殖决策的调节
  • 批准号:
    391553-2015
  • 财政年份:
    2018
  • 资助金额:
    $ 3.57万
  • 项目类别:
    Discovery Grants Program - Northern Research Supplement
Mediation of optimal reproductive decisions by maternal stress
母亲压力对最佳生殖决策的调节
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Mediation of optimal reproductive decisions by maternal stress
母亲压力对最佳生殖决策的调节
  • 批准号:
    391553-2015
  • 财政年份:
    2017
  • 资助金额:
    $ 3.57万
  • 项目类别:
    Discovery Grants Program - Northern Research Supplement
Mediation of optimal reproductive decisions by maternal stress
母亲压力对最佳生殖决策的调节
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  • 资助金额:
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    Discovery Grants Program - Accelerator Supplements
Mediation of optimal reproductive decisions by maternal stress
母亲压力对最佳生殖决策的调节
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    RGPIN-2015-06724
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  • 资助金额:
    $ 3.57万
  • 项目类别:
    Discovery Grants Program - Individual
Mediation of optimal reproductive decisions by maternal stress
母亲压力对最佳生殖决策的调节
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  • 财政年份:
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  • 资助金额:
    $ 3.57万
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    Discovery Grants Program - Accelerator Supplements
Mediation of optimal reproductive decisions by maternal stress
母亲压力对最佳生殖决策的调节
  • 批准号:
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  • 财政年份:
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  • 资助金额:
    $ 3.57万
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