Hermit crabs perceive the extent of their virtual bodies.

Hermit crabs perceive the extent of their virtual bodies.
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DOI:
10.1098/rsbl.2012.0085
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发表时间:
2012-08-23
期刊:
影响因子:
3.3
通讯作者:
Gunji YP
Gunji YP
中科院分区:
生物学2区
文献类型:
--
作者:
Sonoda K;Asakura A;Minoura M;Elwood RW;Gunji YP

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如果动物要适应身体的变化,并在结构复杂的环境中有效地移动,就需要灵活的身体意象。在这里,我们表明,陆地寄居蟹,Coenobita rugosus,经常改变壳,可以修改行走行为,取决于壳的形状。寄居蟹沿着一条左右拐角交替的走廊行走;如果拐角处狭窄,螃蟹会旋转身体避开墙壁,这表明它们意识到环境障碍。当将塑料板连接到髋臼杯时,旋转增加。我们认为,当壳被板延伸时,寄居蟹自己的身体被同化了。虽然有工具被身体同化的情况,但我们的结果是动物生活和/或携带的栖息地成为虚拟身体的一部分的第一个例子。
A flexible body image is required by animals if they are to adapt to body changes and move effectively within a structurally complex environment. Here, we show that terrestrial hermit crabs, Coenobita rugosus, which frequently change shells, can modify walking behaviour, dependent on the shape of the shell. Hermit crabs walked along a corridor that had alternating left and right corners; if it was narrow at the corner, crabs rotated their bodies to avoid the wall, indicating an awareness of environmental obstacles. This rotation increased when a plastic plate was attached to the shell. We suggest that the shell, when extended by the plate, becomes assimilated to the hermit crab's own body. While there are cases of a tool being assimilated with the body, our result is the first example of the habitat where an animal lives and/or carries being part of a virtual body.
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