The Evolution of Sexual Dimorphism in Plumage: A Phylogenetic Perspective

羽毛性别二态性的进化：系统发育的视角

• 批准号: 0217817
• 负责人: Kevin Burns
• 金额: --
• 依托单位: San Diego State University Foundation
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2002
• 资助国家: 美国
• 起止时间: 2002-08-15 至 2007-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0217817&HistoricalAwards=false
• 关键词: Evolution; Sexual; Dimorphism; Plumage; Phylogenetic

Kevin J. BurnsThe Evolution of Sexual Dimorphism in Plumage: A Phylogenetic Perspective This study uses an evolutionary tree of a group of birds to investigate the evolution of differences between males and females in plumage. Evolutionary trees of a variety of organisms are providing a new perspective to classical ideas about the evolution of plumage coloration. For example, male ornaments can be lost frequently, and females often evolve elaborate traits. In this study, DNA sequences of three genes will be used to reconstruct an evolutionary tree for species of tanagers and finches. The resulting evolutionary tree will be used to examine patterns of evolution of sexual differences in plumage. Transformations between different types of plumage will be tabulated and the frequency of changes in male plumage will be compared to the frequency of changes in female plumage. In addition to providing information on the evolution of male and female plumage differences, the data resulting from this project will also address questions in a variety of areas including the biogeography of Central and South America, the prevalence of ultraviolet coloration in birds, the evolution of feeding characteristics, and evolutionary tree constructing methods. Beyond scientific impacts of this proposal, this project will also provide training and educational opportunities for several students, at both the undergraduate and graduate level. SDSU is a diverse campus, with no racial group making up a majority of the students. It is expected that the students that work on this project will reflect the diversity seen on campus. Results will be disseminated broadly within scientific journals, the popular media, and bird-watching literature. Both the molecular sequence data and the plumage data will be made accessible online. The teaching efforts of the principal investigator will also be enhanced by the results of this project by providing specific examples that can be included in lectures and inquiry-based activities.

Kevin J. BurnsThe Evolution of Sexual Dimorphism in Plumage：A Phylogenetic Perspective这项研究使用了一组鸟类的进化树来调查雄性和雌性之间羽毛差异的进化。 各种生物的进化树为羽毛颜色的进化提供了一个新的视角。 例如，雄性的装饰品可能经常丢失，而雌性经常进化出精致的特征。 在这项研究中，三个基因的DNA序列将被用来重建一个物种的进化树tanagers和雀。 由此产生的进化树将用于研究羽毛性别差异的进化模式。 不同类型的羽毛之间的转换将被制成表格，并将雄性羽毛的变化频率与雌性羽毛的变化频率进行比较。 除了提供关于雄性和雌性羽毛差异进化的信息外，该项目产生的数据还将解决各种领域的问题，包括中美洲和南美洲的地理学，鸟类紫外线着色的流行，进食特征的进化以及进化树构建方法。 除了这项建议的科学影响，该项目还将为本科生和研究生提供培训和教育机会。 SDSU是一个多元化的校园，没有种族群体占学生的大多数。 预计参与该项目的学生将反映校园内的多样性。 研究结果将在科学期刊、大众媒体和观鸟文献中广泛传播。 分子序列数据和羽毛数据都将在网上提供。 主要研究员的教学工作也将因该项目的成果而得到加强，办法是提供可列入讲座和调查活动的具体实例。