Cycles of species replacement emerge from locally induced maternal effects on offspring behavior in a passerine bird
Cycles of species replacement emerge from locally induced maternal effects on offspring behavior in a passerine bird
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DOI：
10.1126/science.1260154
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发表时间：
2015-02-20
期刊：
影响因子：
56.9
通讯作者：
Anderson, Samantha R.
中科院分区：
文献类型：
--
作者：
Duckworth, Renee A.;Belloni, Virginia;Anderson, Samantha R.
生态学中的一个重要问题是个体之间发生的机械过程如何驱动大规模的群落形成和变化模式。在这里，我们表明，在两个物种的蓝知更鸟，一个由其他替代周期出现作为一个间接后果的母亲对后代的行为的影响，以响应当地的资源可用性。在广泛的时间和空间尺度采样，我们发现，西部蓝知更鸟，更有竞争力的物种，偏见的出生顺序的后代性别的方式，影响后代的侵略和扩散，设置阶段的人口密度迅速增加，最终导致其姐妹物种的替代。我们的研究结果提供了可预测的社区动态如何发生，尽管当地的行为相互作用的偶然性。
An important question in ecology is how mechanistic processes occurring among individuals drive large-scale patterns of community formation and change. Here we show that in two species of bluebirds, cycles of replacement of one by the other emerge as an indirect consequence of maternal influence on offspring behavior in response to local resource availability. Sampling across broad temporal and spatial scales, we found that western bluebirds, the more competitive species, bias the birth order of offspring by sex in a way that influences offspring aggression and dispersal, setting the stage for rapid increases in population density that ultimately result in the replacement of their sister species. Our results provide insight into how predictable community dynamics can occur despite the contingency of local behavioral interactions.