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首页> 外文期刊>Ecology letters >Good housekeeping: why do shelter-dwelling caterpillars fling their frass?
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Good housekeeping: why do shelter-dwelling caterpillars fling their frass?

机译：做好家务管理：为什么栖身于毛毛虫的野牛逃走？

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摘要

Although both feeding and elimination of waste are imperatives for all animals, ecologists and evolutionary biologists have devoted considerable attention to foraging, while largely ignoring defecation. Many organisms, however, exhibit defecation behaviours that appear to have been shaped by natural selection in a range of ecological contexts. Accumulation of waste may pose particular challenges for animals that exhibit high site fidelity or live within enclose spaces. In a taxonomically widespread but largely unexamined behaviour, many caterpillars that construct and inhabit leaf shelters ballistically eject their individual faecal pellets (frass) great distances at great speeds. Here, I show that elimination of chemical cues for natural enemies is likely to have been a deriving force behind the evolution of frass ejection behaviour in skipper caterpillars; hygiene and crowding are less important in this system.
机译：尽管饲喂和消除浪费对于所有动物都是必须的，但生态学家和进化生物学家已经对觅食投入了相当大的注意力，而在很大程度上却忽略了排便。然而，许多生物表现出排便行为，这些行为似乎是在一系列生态环境中自然选择所形成的。废物的堆积可能对表现出高保真度或生活在封闭空间内的动物构成特殊挑战。在分类学上广泛但基本上未经检验的行为中，许多构造和栖息于叶子遮蔽处的毛毛虫以很高的速度弹射了很远的距离以排出它们各自的粪便颗粒。在这里，我表明，消除针对天敌的化学线索可能是船长毛毛虫跳水行为演变背后的推手。在此系统中，卫生和拥挤不太重要。

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