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首页> 外文期刊>Proceedings of the National Academy of Sciences of the United States of America >Fire ants self-assemble into waterproof rafts to survive floods
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Fire ants self-assemble into waterproof rafts to survive floods

机译：消防蚁自组装成防水筏，可抵御洪水

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摘要

Why does a single fire ant Solenopsis invicta struggle in water, whereas a group can float effortlessly for days? We use time-lapse photography to investigate how fire ants 5. invicta link their bodies together to build waterproof rafts. Although water repellency in nature has been previously viewed as a static material property of plant leaves and insect cuticles, we here demonstrate a self-assembled hydrophobic surface. We find that ants can considerably enhance their water repellency by linking their bodies together, a process analogous to the weaving of a waterproof fabric. We present a model for the rate of raft construction based on observations of ant trajectories atop the raft. Central to the construction process is the trapping of ants at the raft edge by their neighbors, suggesting that some "cooperative" behaviors may rely upon coercion.
机译：为何一只火蚁在水中挣扎而一群却可以毫不费力地漂浮几天呢？ 5.我们使用延时摄影技术来研究火蚁5.虫子如何将它们的身体链接在一起以建造防水筏。尽管以前自然界中的拒水性已被视为植物叶片和昆虫角质层的静态物质特性，但我们在此处展示了自组装的疏水性表面。我们发现，通过将蚂蚁的身体连接在一起，蚂蚁可以大大提高其防水性，这一过程类似于防水织物的编织过程。我们基于对木筏顶部的蚂蚁轨迹的观察，提出了一种对木筏建造速度的模型。施工过程的中心是蚂蚁被其邻居困在木筏边缘，这表明某些“合作”行为可能依赖于胁迫。

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