DISSERTATION RESEARCH: Relationship between diverse male coloration and speciation in darters

论文研究：不同雄性体色与蛇鲈物种形成之间的关系

基本信息

批准号：
1210743
负责人：
Rebecca Fuller
金额：
$ 1.42万
依托单位：
University of Illinois at Urbana-Champaign
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2012
资助国家：
美国
起止时间：
2012-06-01 至 2015-09-30
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=1210743&HistoricalAwards=false
关键词：
DISSERTATION RESEARCH Relationship between diverse

项目摘要

Selection on differential reproductive success of males and females (sexual selection) has been linked to speciation by driving divergence in both a male trait and the female preference for that trait. However, this process should not apply to the diversification of traits selected via male-male competition rather than female preference. Such traits may nevertheless facilitate speciation if involved in species recognition, and be favored if mating among species is disadvantageous (i.e., reinforcement against hybridization). This project investigates orangethroat and rainbow darters, representatives of a speciose fish clade with diverse and distinctive male breeding coloration. In both, competition between males affects their reproductive success while female preference does not. The research will incorporate (1) preference experiments to test whether male coloration mediates species recognition, (2) field surveys to examine the factors underlying male color diversification, and (3) a breeding design to measure hybrid inviability and thus the potential for reinforcement.This project will elucidate the poorly understood relationship between speciation and male-male competition, a major aspect of sexual selection. Additionally, there will be opportunities for science education through participation in public outreach events involving native aquatic fauna, as darters make attractive and accessible subjects for teaching about ecology, evolution, and conservation. Finally, this project will mentor undergraduates in evolutionary concepts and the process of scientific inquiry.

关于男性和女性的差异生殖成功的选择（性选择）与形成相关，通过推动男性特征和女性对该性状的偏爱的差异。但是，此过程不应适用于通过男性竞争而不是女性偏好选择的特征的多元化。但是，如果这种特征参与物种识别，则可能会促进物种形成，如果物种之间的交配是不利的（即对杂交的增强），则受到青睐。该项目调查了甲状腺赛和彩虹飞行员，这是一种特定的鱼类进化枝的代表，具有多种多样且独特的男性育种色素。在这两种情况下，男性之间的竞争都会影响其生殖成功，而女性偏爱则不会。这项研究将结合（1）偏好实验，以测试男性着色是否介导了物种识别，（2）现场调查以检查男性色彩多样化的因素，以及（3）一种测量杂种不可分割的繁殖设计，从而阐明了增强的潜力。这将阐明这种项目与男性竞争之间的不良关系，是性竞争之间的不良关系，性选择性选择。此外，随着涉及本地水生动物群的公共外展活动，科学教育将有机会进行教育，因为DARTERS为有关生态，进化和保护的教学提供了吸引力且易于访问的主题。最后，该项目将指导进化概念和科学探究过程的大学生。