RUI: A Test of How the Timing of Nesting Influences the Genetic Identity of Nestlings in a Territorial Songbird

RUI：筑巢时间如何影响领地鸣禽雏鸟遗传特性的测试

• 批准号: 9904823
• 负责人: L. Scott Johnson
• 金额: $ 6.48万
• 依托单位: Towson University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1999
• 资助国家: 美国
• 起止时间: 1999-08-01 至 2002-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9904823&HistoricalAwards=false
• 关键词: RUI; Test; How; Timing; Nesting

Animal Behavior ProgramNon-technical AbstractTitle: RUI: A Test of How the Timing of Nesting Influences the Genetic Identity of Nestlings in a Territorial Songbird.PI: Johnson, L. ScottProposal #: 9904823Parental behavior in some bird species involves both male and females. Recent research has found that in some species, females may mate with males who are not their mates. Nests can therefore contain young that were not fathered by males tending the nest. Theoretically, males should act to minimize their chances of rearing another male's offspring. Dr. Scott Johnson asks if males can reduce their risk of rearing another male's offspring by nesting very early in the spring. Early nesting male territory holders should benefit from having relatively few neighbors that might sire the offspring of the territory holder's mate. In contrast, late-arriving males often find themselves surrounded by males whose mates are already incubating eggs, freeing these males to attempt to sire offspring of females paired with late-arriving males. A DNA based technique for determining the genetic identity of individuals will be used to conduct paternity analyses on broods of early and late-settling males in a Wyoming population of the House Wren, a small songbird, to test the prediction that early nesting males will be rearing more of their own offspring and fewer of their neighbors offspring.This study will provide new information on the strategies used by male birds to insure that they are rearing their own offspring and so is useful in advancing our ideas concerning the evolution of behavior. Moreover, it could be potentially important in explaining the advantage of early breeding in songbirds. Such an understanding could have relevance for songbird conservation. This one-year study will train one graduate student and three undergraduate students in research.

动物行为计划非技术摘要标题：RUI：关于筑巢时间如何影响领地鸣禽中雏鸟遗传身份的测试。PI：Johnson，L. Scott提案编号：9904823某些鸟类的亲代行为涉及雄性和雌性。 最近的研究发现，在某些物种中，雌性可能会与不是它们配偶的雄性交配。因此，巢穴中可以容纳并非由照管巢穴的雄性所生的幼崽。 从理论上讲，雄性应该采取行动，尽量减少抚养另一只雄性后代的机会。 斯科特·约翰逊博士询问雄性是否可以通过在春天尽早筑巢来降低抚养另一只雄性后代的风险。 早期筑巢的雄性领地拥有者应该受益于相对较少的邻居，这些邻居可能会生育领地拥有者配偶的后代。 相比之下，晚到的雄性经常发现自己被配偶已经在孵卵的雄性包围着，这使得这些雄性能够尝试与晚到的雄性配对的雌性繁育后代。 一种用于确定个体遗传身份的基于 DNA 的技术将用于对怀俄明州鹪鹩（一种小型鸣禽）种群中早定居和晚定居雄性的后代进行亲子关系分析，以测试早期筑巢雄性将养育更多自己的后代和更少邻居后代的预测。这项研究将提供有关雄鸟使用策略的新信息，以确保它们 养育自己的后代，因此有助于推进我们关于行为进化的想法。 此外，这对于解释鸣禽早期繁殖的优势可能也很重要。 这种理解可能与鸣禽保护有关。这项为期一年的研究将培养一名研究生和三名本科生进行研究。