Collaborative Research: Foraging Efficiency, Dominance, and Survivorship

在这个合作研究项目中，一位行为生态学家（K. a . Sullivan）和一位生理生态学家（W. W. Weathers）研究了一种小型雀形目鸟黄眼junco （junco phaenotus）的觅食效率、社会优势和存活率之间的关系。这项研究的重点是幼鸟在成年照顾结束后的两周内。在此期间，幼鱼死亡率很高（42%），体重是存活率的重要预测指标。这段时间的激烈选择提供了一个机会来确定是否觅食效率和/或社会优势也会影响生存，从而影响适应性，正如当前理论所预测的那样。该研究将为幼鱼的觅食效率如何影响亲代照顾的时间长短、社会优势的能量成本和收益、微生境选择对每日能量消耗的影响以及幼鱼生存对种群的调节等多种主题提供见解。

In this collaborative research project, a behavioral ecologist (K. A. Sullivan) and a physiological ecologist (W. W. Weathers) examine the relationship between foraging efficiency, social dominance, and survivorship in a small passerine bird, the yellow-eyed junco (Junco phaenotus). The study focuses on juvenile birds during the two-week period following the termination of adult care. During this period, juvenile mortality is high (42%) and body mass is a significant predictor of survival. The period of intense selection provides an opportunity to determine whether foraging efficiency and/or social dominance also affect survivorship, and hence fitness, as predicted by current theory. The study will provide insights concerning such diverse topics as how juvenile foraging efficiency affects the length of parental care, the energy costs and benefits of social dominance, the effect of microhabitat selection on daily energy expenditure, and population regulation by juvenile survivorship.