Conflicts of interest and reproductive skew in plural breeding joint nesting birds

复数繁殖联合筑巢鸟类的利益冲突和生殖偏差

• 批准号: 138790-2011
• 负责人: Quinn, James
• 金额: $ 2.33万
• 依托单位: McMaster University
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2011
• 资助国家: 加拿大
• 起止时间: 2011-01-01 至 2012-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=475892
• 关键词: Conflicts; interest; reproductive; skew; plural

Plural breeding joint nesting birds provide a useful model for understanding cooperation and conflict. Some engage in reproductive competition that wastes group resources. With students, I study two species with different mating system. Smooth-billed anis live in groups of unrelated monogamous pairs, expected to favour their own young at the expense of other group members. Indeed, before starting to lay they reject others' eggs. Once incubation has begun, competitive behaviours end and the they cooperate to incubate eggs and raise chicks. Pukeko form groups in which all breeding males mate with all breeding females. Their interests are much more shared. Males in this system are unlikely to recognize their own genetic offspring. Females could recognize their own eggs, yet our work shows no evidence of egg recognition and a lack of apparent conflict. We will explore conflicts and cooperation in these two species. My students will gain field and lab skills, examining individual roles and parentage along with hormone profiling to determine the effect of mating system affects on the degree of competition and cooperation in these species. Such skills are widely applicable.

多个繁殖的联合筑巢鸟类为理解合作与冲突提供了一个有用的模型。有些参与繁殖竞争，浪费群体资源。与学生一起，我研究了两个具有不同交配系统的物种。嘴巴光滑的Ani生活在不相关的一夫一妻制的群体中，预计会以牺牲其他群体成员的利益为代价偏爱自己的后代。事实上，在开始产卵之前，它们会拒绝别人的卵。一旦孵化开始，竞争行为就结束了，它们合作孵化鸡蛋和饲养雏鸟。Pukeko组成群体，在这个群体中，所有繁殖的雄性与所有繁殖的雌性交配。他们的利益更有共同点。这个系统中的男性不太可能识别自己的基因后代。雌性可以识别自己的卵，但我们的研究没有显示出识别卵的证据，也没有明显的冲突。我们将探索这两个物种之间的冲突与合作。我的学生将获得实地和实验室技能，检查个体角色和亲子关系，以及荷尔蒙分析，以确定交配系统对这些物种的竞争和合作程度的影响。这些技能是广泛适用的。