DISSERTATION RESEARCH: Sexual Conflict and Extrapair Paternity in the Plural Cooperatively Breeding Superb Starling, Lamprotornis Superbus

论文研究： 多元合作繁育优质椋鸟 (Lamprotornis Superbus) 中的性冲突和额外亲子关系

• 批准号: 0407713
• 负责人: Stephen Emlen
• 金额: --
• 依托单位: Cornell Univ - State: AWDS MADE PRIOR MAY 2010
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2004
• 资助国家: 美国
• 起止时间: 2004-05-01 至 2005-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0407713&HistoricalAwards=false
• 关键词: DISSERTATION; RESEARCH; Sexual; Conflict; Extrapair

SEXUAL CONFLICT AND EXTRAPAIR PATERNITY IN THEPLURAL COOPERATIVELY BREEDING SUPERB STARLING, LAMPROTORNIS SUPERBUSDustin R. RubensteinCooperative breeding occurs when more than two individuals contribute to the care of a single nest. Typically, this involves one or more non-breeding helpers who aid the parents raise the offspring in the nest. However, much recent genetic work examining parentage in nests of cooperative breeders has found that these helpers are often the genetic parents of some of the offspring. That is, male helpers may sneak extra-pair fertilizations with the breeding female. This project tests two hypotheses about sexual conflict (i.e., conflict over extra-pair fertilizations) in cooperative breeders. Females may seek extra-pair fertilizations to gain (1) direct reproductive benefits (e.g., helping in return for reproduction) or (2) indirect genetic benefits (e.g., genetic quality, diversity, or compatibility in their mates). We will use species-specific microsatellite markers to study sexual conflict, paternity, and relatedness in the plural cooperatively breeding superb starling, Lamprotornis superbus, in Kenya. This will be one of the few studies to examine the social dynamics of plural cooperative breeding (i.e., multiple breeding pairs per group) using microsatellites, and it will offer insights into how reproductive and sexual conflict are mediated in cooperative breeders. This project will educate and train Kenyan students in skills necessary to pursue careers in ecotourism and research.

多群体合作繁育优良蓝宝石的性冲突和非配对父系关系合作繁殖发生在两个以上的个体共同照顾一个巢穴的时候。通常情况下，这涉及一个或多个非繁殖助手，帮助父母在巢中抚养后代。然而，最近的遗传学研究在合作繁殖者的巢穴中检查亲子关系发现，这些帮手通常是一些后代的遗传父母。也就是说，雄性助手可能会偷偷与繁殖中的雌性进行额外的受精。该项目测试了关于性冲突的两个假设（即，在合作育种者中的额外对受精的冲突）。雌性可能会寻求额外的配对受精以获得（1）直接的生殖益处（例如，有助于生殖的回报）或（2）间接遗传益处（例如，遗传质量、多样性或配偶的相容性）。我们将使用物种特异性的微卫星标记来研究性冲突，亲子关系，并在多元合作繁殖的极好的椋鸟，Lamprotornis superbus，在肯尼亚的相关性。这将是为数不多的研究之一，以检查社会动态的多元合作育种（即，多个育种对每组）使用微卫星，它将提供如何在合作育种调解生殖和性冲突的见解。该项目将教育和培训肯尼亚学生从事生态旅游和研究职业所需的技能。