DISSERTATION RESEARCH: Correlated diversification of a male trait and associated female perception

论文研究：男性特征的相关多样化和相关的女性认知

基本信息

批准号：
1702011
负责人：
Todd Oakley
金额：
$ 2万
依托单位：
University of California-Santa Barbara
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2017
资助国家：
美国
起止时间：
2017-06-01 至 2019-05-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=1702011&HistoricalAwards=false
关键词：
DISSERTATION RESEARCH Correlated diversification male

项目摘要

A long-standing question in evolution is whether strong mate competition and mate selection influences the evolution of species. This question remains unresolved because species accumulate over deep timescales, and previous studies have revealed ambiguous results. In contrast to studies across species, studies across populations show clear links between mate selection and rapid evolution, and show correlations between male mating signals and the associated female preferences. Missing in the literature is a study that tests these population-level findings in a species-level context, specifically, one that correlates differentiation in male mating signals and female perception. If changes in female perception are met with changes in male signal, the project will support a novel finding: that similar mechanisms are at work across species as across populations. This also suggests that sexual signals may be constrained by female physiology, and that changes in female physiology allow for changes in male signal diversity. Results from this project will be disseminated at international meetings, undergraduates will be actively involved in this research, and outcomes of this project will contribute to the development of novel biomedical reporter enzymes that create different colors of bioluminescence. Bioluminescent, mate-signaling ostracod crustaceans offer a unique system to understand how closely sexual signals associate with their intended receivers. The researchers will first measure bioluminescent emission spectra from males of 26 species of ostracod crustaceans collected from the Caribbean Sea. Next, they will measure female perceptual spectra from 10 species using a visual physiology technique that determines the absorption of specific wavelengths of light through single photoreceptor cells in the eye. The researchers will then determine the amount of overlap of male sexual trait spectra (the color of the bioluminescence) and the female perceptual spectra. If population genetic theory holds, and preference is determined by perception, we expect covariation between male signals and female physiology.

进化中的一个长期存在的问题是，强大的伴侣竞争和伴侣选择是否影响物种的进化。这个问题仍然无法解决，因为物种积累了深度的时间尺度，并且先前的研究揭示了结果模棱两可。与跨物种的研究相反，跨种群的研究表明，伴侣选择与快速进化之间存在明显的联系，并显示了男性交配信号与相关女性偏好之间的相关性。文献中缺少的是一项研究，该研究在物种级别的情况下测试了这些人群级别的发现，特别是与男性交配信号和女性感知的分化相关的研究。如果男性信号的变化遇到了女性感知的变化，则该项目将支持一个新发现：类似的机制在跨种群中起作用。这也表明，性信号可能受到女性生理学的限制，并且女性生理学的变化允许男性信号多样性的变化。该项目的结果将在国际会议上传播，本科生将积极参与这项研究，该项目的结果将有助于开发新型的生物医学报告酶，从而创造出不同的生物发光颜色。生物发光，信号的Ostracod Crustaceans提供了一个独特的系统，可以了解性信号与预期的接收器的紧密关系。研究人员将首先测量从加勒比海收集的26种奥斯特拉科甲壳类动物的男性的生物发光发射光谱。接下来，他们将使用一种视觉生理学技术从10个物种中测量女性感知光谱，该技术通过眼睛中的单个感光细胞来确定光的特定波长的吸收。然后，研究人员将确定男性性特征光谱（生物发光的颜色）和女性感知光谱的重叠量。如果人口遗传理论的成立，并且偏好是通过感知确定的，那么我们期望男性信号与女性生理学之间的协方差。