BRC-BIO: Adaptive variation through space and time in American pikas (Ochotona princeps)

BRC-BIO:美洲鼠兔(Ochotona Princeps)随空间和时间的适应性变异

基本信息

项目摘要

Environments around the world are rapidly changing. As a result, many animals must either alter their behaviors or biology to adjust, move to a more suitable area, or risk going extinct. Characterizing how animals changed in the past is crucial to understanding risks they face in the present. A “space-for-time” approach allows for investigation of how populations in dissimilar environments differ in their biology. This then allows researchers to infer how they might respond to future environmental changes. For instance, Yosemite National Park is at high elevation and gets a lot of snow compared to the low-lying mountain ranges of Nevada, which are relatively hot and dry. As Yosemite gets warmer and drier, animals in that area may start looking and behaving more like the populations found in Nevada. In contrast, a “temporal” approach involves analyzing data from animals found in the same location but separated in time by a century or more. By using natural history museum collections, this project will employ both a space-for-time and a temporal approach with American pikas. Pikas are small, temperature-sensitive, rabbit-like creatures that live in rocky areas. The work aims to better understand how these populations have responded to past changes with the goal of better predicting their response to current and future environmental change. In addition, this project will provide research experiences to undergraduate and master’s students from historically underrepresented backgrounds. Finally, the researchers will collaborate with local community college professors to develop material for biology classrooms.The proposed research applies whole genome sequencing and landscape genomics to analyze modern and historic museum specimens of American pikas (Ochotona princeps). Importantly, the historic specimens were collected prior to the onset of current, rapid climate change. Specifically, this research will identify adaptive genetic variation along spatial and temporal environmental gradients. It will examine associated physiological pathways and investigate whether populations from different genetic lineages have experienced parallel evolution for these traits. Finally, the work will develop a panel of neutral and functional genetic markers to noninvasively survey and monitor populations across the species’ range. Using both a space-for-time substitution and a temporal framework across a broad geographic area allows for more robust inference on the environmental drivers of local adaptation. Furthermore, making spatial and temporal comparisons among pairs of populations in divergent genetic lineages enables analysis of parallel evolution. This research will be an important step in quantifying the evolutionary response of a temperature-sensitive species to rapid climate change. Likewise, it will significantly improve our ability to predict future response and vulnerability of American pikas and species with similar limitations.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.
世界各地的环境正在迅速变化。因此,许多动物必须改变它们的行为或生物学来适应,转移到更合适的区域,否则就有灭绝的风险。描述动物在过去是如何变化的,对于理解它们现在面临的风险至关重要。一个“空间换时间”的方法可以调查不同环境中的种群在生物学上的差异。这使研究人员能够推断它们如何应对未来的环境变化。例如,约塞米蒂国家公园海拔高,与相对炎热干燥的内华达州的低洼山脉相比,积雪很多。随着约塞米蒂变得越来越温暖和干燥,该地区的动物可能会开始看起来和行为更像在内华达州发现的种群。相比之下,“时间”方法涉及分析在同一地点发现但在时间上相隔世纪或更长时间的动物的数据。通过使用自然历史博物馆的藏品,该项目将采用空间换时间和时间的方法与美国鼠兔。鼠兔是一种小型的、对温度敏感的、像兔子一样的生物,生活在岩石地区。这项工作旨在更好地了解这些人群如何应对过去的变化,以便更好地预测他们对当前和未来环境变化的反应。此外,该项目将提供研究经验,本科生和硕士生从历史上代表性不足的背景。最后,研究人员将与当地社区大学教授合作开发生物课堂材料。拟议的研究应用全基因组测序和景观基因组学分析现代和历史博物馆标本的美国鼠兔(Ochotona princeps)。重要的是,历史样本是在当前快速气候变化开始之前收集的。具体而言,这项研究将确定适应性遗传变异沿着空间和时间的环境梯度。它将研究相关的生理途径,并调查来自不同遗传谱系的人群是否经历了这些特征的平行进化。最后,这项工作将开发一组中性和功能性遗传标记,以非侵入性地调查和监测整个物种范围内的种群。在广泛的地理区域内使用时空替代和时间框架,可以对当地适应的环境驱动因素进行更有力的推断。此外,在不同遗传谱系的成对种群之间进行空间和时间比较,可以分析平行进化。这项研究将是量化温度敏感物种对快速气候变化的进化反应的重要一步。同样,它将显著提高我们预测未来美国鼠兔和具有类似限制的物种的响应和脆弱性的能力。该奖项反映了NSF的法定使命,并通过使用基金会的知识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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Jessica Castillo Vardaro其他文献

Alternatives to genetic affinity as a context for within-species response to climate
作为物种内对气候响应的背景,遗传亲和力的替代方案
  • DOI:
    10.1038/s41558-019-0584-8
  • 发表时间:
    2019-09-23
  • 期刊:
  • 影响因子:
    27.100
  • 作者:
    Adam B. Smith;Erik A. Beever;Aimee E. Kessler;Aaron N. Johnston;Chris Ray;Clinton W. Epps;Hayley C. Lanier;Rob C. Klinger;Thomas J. Rodhouse;Johanna Varner;John D. Perrine;Amy Seglund;L. Embere Hall;Kurt Galbreath;Chris MacGlover;Peter Billman;Gretchen Blatz;Jason Brewer;Jessica Castillo Vardaro;Anna D. Chalfoun;Gail Collins;April Craighead;Chris Curlis;Christopher Daly;Daniel F. Doak;Mitch East;Mark Edwards;Liesl Erb;Kristina A. Ernest;Brian Fauver;Kerry R. Foresman;Ken Goehring;Joan Hagar;Charles L. Hayes;Philippe Henry;Kimberly Hersey;Shannon L. Hilty;Jim Jacobson;Mackenzie R. Jeffress;Tom Manning;Amy Masching;Bryce Maxell;Rayo McCollough;Corrie McFarland;Eric Miskow;Toni Lyn Morelli;Lucas Moyer-Horner;Megan Mueller;Martin Nugent;Beth Pratt;Mary Rasmussen-Flores;Tom H. Rickman;Hillary Robison;Arthur Rodriguez;Karen Rowe;Kevin Rowe;Michael A. Russello;Vicki Saab;Angie Schmidt;Joseph A. E. Stewart;James N. Stuart;Leona K. Svancara;Will Thompson;Julie Timmins;Gregg Treinish;Matthew D. Waterhouse;Marie L. Westover;Jennifer Wilkening;Leah Yandow
  • 通讯作者:
    Leah Yandow

Jessica Castillo Vardaro的其他文献

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