NSF Postdoctoral Fellowship in Biology FY 2021: Investigating the genetic and eco-evolutionary mechanisms underlying life history polymorphisms

2021 财年 NSF 生物学博士后奖学金:研究生命史多态性背后的遗传和生态进化机制

基本信息

  • 批准号:
    2109468
  • 负责人:
  • 金额:
    $ 13.8万
  • 依托单位:
  • 依托单位国家:
    美国
  • 项目类别:
    Fellowship Award
  • 财政年份:
    2022
  • 资助国家:
    美国
  • 起止时间:
    2022-03-01 至 2024-02-29
  • 项目状态:
    已结题

项目摘要

This action funds an NSF Postdoctoral Research Fellowship in Biology for FY 2021, Integrative Research Investigating the Rules of Life Governing Interactions Between Genomes, Environment and Phenotypes. The fellowship supports research and training of the fellow that will contribute to the area of Rules of Life in innovative ways. Life history strategies are defined as the pattern of survival and reproduction for a species, and are informed by important factors such as growth, reproduction, and maintenance. Life history strategies can be fast (early reproduction and short lifespan) to slow (late reproduction and long lifespan), and everything in between. The costs and benefits of fast or slow life histories depend on environmental conditions. Constant and resource rich environments favor fast life histories. In contrast, in environments where resource availability fluctuates, slow life histories are favored. Since environmental variability is increasing with global climate change, life history could help protect species and ecosystems from negative consequences or population declines. To enable predictions about the potential for species to adapt and persist in new environments, this research will advance our understanding of the mechanisms that underpin life history evolution. To broaden participation of underrepresented groups in academia the fellow will develop and facilitate workshops on inclusive mentorship and leadership.The research will leverage a model system with a life history polymorphism, the wing-dimorphic variable field cricket, Gryllus lineaticeps. A bulk segregant analysis will identify genetic variants underlying wing-morphology and timing of reproduction in long- and short-wing cricket morphs that trade-off between flight-capability and reproduction. This will test the hypothesis that genes regulating developmental switches and rates of physiological processes control the timing of major life history events and set the pace of life. The fellow will also develop a Gillespie eco-evolutionary model (GEM) for the evolution of wing dimorphism. The model will determine how genetic-and-environmental interactions alter the fitness costs and benefits of alternative life history strategies, enabling predictions about the evolutionary trajectory of life history polymorphisms. To broaden participation, the fellow will prepare graduate students to mentor undergraduate students from low-income, first generation, and minority backgrounds by facilitating inclusive mentorship training workshops. Additionally, leadership workshops will provide the fellow and other postdocs training in leadership strategies that can be applied to foster more collaborative, inclusive, and equitable laboratory and research environments.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.
该行动资助了2021财年的NSF生物学博士后研究奖学金,即调查基因组,环境和表型之间相互作用的生命规则的综合研究。该研究金支持研究员的研究和培训,以创新的方式为生活规则领域做出贡献。生活史策略被定义为一个物种的生存和繁殖模式,并通过重要因素,如生长,繁殖和维护。生活史策略可以是快(早期繁殖和短寿命)到慢(晚期繁殖和长寿命),以及介于两者之间的一切。快速或缓慢的生命史的成本和收益取决于环境条件。恒定和资源丰富的环境有利于快速的生命史。相比之下,在资源可用性波动的环境中,缓慢的生命史是有利的。由于环境的变异性随着全球气候变化而增加,生活史可以帮助保护物种和生态系统免受负面影响或人口减少。为了能够预测物种适应和坚持新环境的潜力,这项研究将促进我们对生命史进化机制的理解。为了扩大学术界代表性不足的群体的参与,研究员将开发和促进包容性的指导和领导讲习班。研究将利用具有生活史多态性的模型系统,翼二形可变场板球,蟋蟀lineticeps。大量的分离分析将确定遗传变异的翅膀形态和繁殖的时间在长,短翼蟋蟀变形之间的权衡飞行能力和繁殖。这将检验基因调节发育开关和生理过程速率的假设,控制主要生活史事件的时间并设定生活节奏。该研究员还将开发一个吉莱斯皮生态进化模型(GEM)的翅膀二型性的进化。该模型将确定遗传和环境相互作用如何改变替代生活史策略的适应性成本和收益,从而能够预测生活史多态性的进化轨迹。为了扩大参与,该研究员将通过促进包容性的导师培训讲习班,帮助研究生指导来自低收入、第一代和少数族裔背景的本科生。此外,领导力研讨会将为研究员和其他博士后提供领导力战略方面的培训,这些战略可以用于促进更具协作性、包容性和公平的实验室和研究环境。该奖项反映了NSF的法定使命,并通过使用基金会的智力价值和更广泛的影响审查标准进行评估,被认为值得支持。

项目成果

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