U.S.-Canada Colloborative Research: Dissecting behavioral isolation in nature: mate choice and the among-population divergence of signal traits and mate preferences

美国-加拿大合作研究：剖析自然界的行为隔离：配偶选择以及信号特征和配偶偏好的群体差异

• 批准号: 1132807
• 负责人: Kelly Dyer
• 金额: $ 4.96万
• 依托单位: University of Georgia Research Foundation Inc
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2011
• 资助国家: 美国
• 起止时间: 2011-09-15 至 2014-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1132807&HistoricalAwards=false
• 关键词: U.S.; Canada; Colloborative; Research; Dissecting

In this international collaborative project researchers from U.S. and Canada will perform experiments to study the role of cuticular hydrocarbons (CHC) in species recognition and the maintenance of boundaries between two closely related species of mushroom-feeding flies, Drosophila subquinaria and Drosophila recens. Male contact pheromones consist of a suite of CHCs, and preliminary data suggests that these differ between the two species. Three specific aims will be pursued to test the hypothesis that male CHCs are the key signal traits that are used by females during mate choice and that underlie species discrimination, and that these traits and the female preferences for them have diverged among populations in response to reinforcing selection generated by the presence of the other species. The results of these studies will lay the groundwork for a long-term collaborative research program that will shed light on how behaviors diverge to generate reproductive isolation and ultimately speciation.Knowledge of the male signals and female preferences will inform hypotheses about whether the genetic basis of within vs. between species female discrimination is the same, and how simple vs. complex we expect these traits to be at the genetic level. The genetic basis of female discrimination and evolutionary genomics of species differentiation in these fly species might be more generally applicable to an understanding of the behavior, ecology, and genetics of reproductive isolation. The data resources will be made available to the community. This project will provide the opportunity to develop a long-term collaboration between early career researchers in the U.S. and Canada and will involve training of students in both laboratories, including women and ethnic minorities. Involvement of junior researchers, especially from groups underrepresented in science, in collaborative international activities is a major goal of OISE.

在这个国际合作项目中，来自美国和加拿大的研究人员将进行实验，研究角质层碳氢化合物（CHC）在物种识别和维持两种密切相关的食用蘑菇苍蝇物种（果蝇 subquinaria 和果蝇）之间边界的作用。 雄性接触信息素由一套 CHC 组成，初步数据表明这两个物种之间存在差异。 我们将追求三个具体目标来检验这一假设，即雄性 CHC 是雌性在择偶过程中使用的关键信号特征，也是物种歧视的基础，并且这些特征和雌性对它们的偏好在种群之间存在差异，以应对其他物种的存在所产生的强化选择。 这些研究的结果将为长期合作研究计划奠定基础，该计划将揭示行为如何分化以产生生殖隔离和最终物种形成。对雄性信号和雌性偏好的了解将有助于推测物种内和物种间雌性歧视的遗传基础是否相同，以及我们期望这些特征在遗传水平上的简单与复杂程度。 这些果蝇物种雌性歧视的遗传基础和物种分化的进化基因组学可能更普遍地适用于理解生殖隔离的行为、生态和遗传学。 数据资源将向社区开放。 该项目将为美国和加拿大的早期职业研究人员提供长期合作的机会，并将涉及对两个实验室的学生（包括女性和少数民族）的培训。 OISE 的一个主要目标是让初级研究人员，特别是来自科学界代表性不足的群体的初级研究人员参与国际合作活动。