Collaborative Research: Sexual Selection on Male Ornamental Traits in Birds

合作研究：鸟类雄性观赏性状的性选择

• 批准号: 0416536
• 负责人: Peter Dunn
• 金额: --
• 依托单位: University of Wisconsin-Milwaukee
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2004
• 资助国家: 美国
• 起止时间: 2004-08-01 至 2008-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0416536&HistoricalAwards=false
• 关键词: Collaborative; Research; Sexual; Selection; Male

Collaborative Research: Sexual Selection on Male OrnamentsPI: Peter Dunn, Corey Freeman-GallantMales often possess ornamental traits such as long tails and bright colors that they use to attract mates. These ornaments may be favored by female choice or male-male competition. Female choice is likely to act on different ornaments than male-male competition, particularly when some ornaments are more revealing of male quality than others. For example, in species with both carotenoid (red, yellow) and melanin (black, brown)-based ornaments, it appears that females often focus their mate choice on the carotenoid-based ornaments, which are generally considered to be better indicators of male condition than ornaments with melanin pigments. Surprisingly, we have discovered two populations of a monogamous bird, the common yellowthroat, in which male reproductive success is related to the size of a carotenoid-based ornament (yellow bib) in one population (New York) and a melanin-based ornament (black facial mask) in another population (Wisconsin). Our study will examine sexual selection on each plumage ornament in both populations.This study will 1) use aviary experiments to identify which ornaments are favored by female choice and male-male competition, and 2) determine if the differences between populations are caused by different mechanisms of selection operating on different ornaments. Common yellowthroats are one of only a handful of species in which researchers have been able to identify the sires of most young, including extra-pair young, and, as a consequence, make an estimate of the full force of selection on male ornaments. One of the broader impacts of this project will be to foster training of students in collaborative research, which will give them a better perspective on how science is conducted. To facilitate this training, the PIs will exchange students between their two institutions (one a small undergraduate institution, the other a large graduate program) each year for both the field and laboratory components of the project.

协作研究：男性装饰性的性选择：Corey Freeman-Gallantmales Peter Dunn通常具有它们用来吸引伴侣的长尾巴和鲜艳的色彩等观赏性状。 这些装饰品可能受到女性选择或男性竞争的青睐。 女性的选择可能与男性竞争不同，尤其是当某些装饰品比其他装饰更揭示男性时。 例如，在具有类胡萝卜素（红色，黄色）和黑色素（黑色，棕色）装饰物的物种中，似乎女性通常将其伴侣选择集中在基于类胡萝卜素的装饰品上，通常被认为是男性状况比黑色素颜料更好的男性状况。 令人惊讶的是，我们发现了两只一夫一妻鸟类的种群，即常见的黄喉，其中男性生殖成功与一个种群（纽约）（纽约）的基于类胡萝卜素的装饰（黄色围嘴）的大小和另一个种群中黑色素的装饰（黑色面膜）有关（Wisconsin）。 我们的研究将检查两个人群中每个羽毛装饰的性选择。这项研究将1）使用鸟舍实验来确定哪些装饰品受到女性选择和男性竞争的青睐，以及2）确定种群之间的差异是否是由在不同饰物上运行的不同选择机制引起的。 常见的黄腹肌是仅有的少数物种之一，其中研究人员能够识别大多数年轻人的父亲，包括年轻的年轻人，因此，估计了男性装饰品的全部选择力量。该项目的更广泛影响之一是在协作研究中培养学生的培训，这将使他们对科学的进行更好。为了促进这项培训，PIS将在其两个机构（一个小型​​本科机构，另一个大型研究生课程）之间为该项目的现场和实验室组成部分交换学生。