Population differences in aggression are shaped by tropical cyclone-induced selection
Population differences in aggression are shaped by tropical cyclone-induced selection
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DOI：
10.1038/s41559-019-0951-x
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发表时间：
2019-09-01
影响因子：
16.8
通讯作者：
Pruitt, Jonathan N.
中科院分区：
文献类型：
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作者：
Little, Alexander G.;Fisher, David N.;Pruitt, Jonathan N.
极端事件，如热带气旋，是破坏性和影响力。然而，观察和记录这些统计上不可能的生态影响，但深刻的“黑天鹅”天气事件是后勤困难。通过预测热带气旋的轨迹，并在它们登陆之前和之后对种群进行采样，我们发现这些极端事件选择了群体生活蜘蛛Anelosimus studiosus中更具侵略性的群体表型。尽管热带气旋袭击是不规则的，每隔几年才会发生一次，即使在特别容易发生的地区，这种选择也足以驱动殖民地表型的区域变化。这些数据提供了令人信服的证据，热带气旋诱导的选择驱动一个重要的功能性状的进化，并表明黑天鹅事件有助于物种内的多样性和当地的适应。
Extreme events, such as tropical cyclones, are destructive and influential forces. However, observing and recording the ecological effects of these statistically improbable, yet profound 'black swan' weather events is logistically difficult. By anticipating the trajectory of tropical cyclones, and sampling populations before and after they make landfall, we show that these extreme events select for more aggressive colony phenotypes in the group-living spider Anelosimus studiosus. This selection is great enough to drive regional variation in colony phenotypes, despite the fact that tropical cyclone strikes are irregular, occurring only every few years, even in particularly prone regions. These data provide compelling evidence for tropical cyclone-induced selection driving the evolution of an important functional trait and show that black swan events contribute to within-species diversity and local adaptation.