Evidence of bird dropping masquerading by a spider to avoid predators.
Evidence of bird dropping masquerading by a spider to avoid predators.
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鸟类被蜘蛛伪装以避免捕食者的证据。
DOI：
10.1038/srep05058
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发表时间：
2014-05-29
影响因子：
4.6
通讯作者：
Tso IM
中科院分区：
文献类型：
--
作者：
Liu MH;Blamires SJ;Liao CP;Tso IM
伪装有各种各样的代价和好处。主要的好处是避免捕食者。圆网蜘蛛Cyclosa ginnaga有一个银身体，并添加了一个白色盘状丝装饰到它的网络。对C.金纳加的身体就像，当人类的眼睛看到它的装饰，一只鸟下降。因此，我们推测，它们的身体颜色可能与其网络装饰联合收割机，形成一个鸟下降化妆舞会，以保护它免受捕食者。我们测量的光谱反射率：（一）蜘蛛的身体，（二）网络装饰，和（三）鸟粪，在该领域对自然背景，发现蜘蛛的身体和装饰的颜色是无法区分彼此和鸟粪时，被膜翅目捕食者。我们监控了C星上的掠夺性攻击。当蜘蛛的身体和/或装饰物变黑时，ginnaga发现捕食者的攻击概率在只有装饰物变黑时更大。因此，我们得出结论，C。金纳加的装饰和身体颜色形成了一个鸟下降的伪装，这减少了它被捕食的可能性。
Masquerading comes at various costs and benefits. The principal benefit being the avoidance of predators. The orb-web spider Cyclosa ginnaga has a silver body and adds a white discoid-shaped silk decoration to its web. The size, shape and colour of C. ginnaga's body resemble, when viewed by the human eye against its decoration, a bird dropping. We therefore hypothesized that their body colouration might combine with its web decoration to form a bird dropping masquerade to protect it from predators. We measured the spectral reflectance of: (i) the spider's body, (ii) the web decoration, and (iii) bird droppings, in the field against a natural background and found that the colour of the spider bodies and decorations were indistinguishable from each other and from bird droppings when viewed by hymentopteran predators. We monitored the predatory attacks on C. ginnaga when the spider's body and/or its decorations were blackened and found that predator attack probabilities were greater when only the decorations were blackened. Accordingly, we concluded that C. ginnaga's decoration and body colouration forms a bird dropping masquerade, which reduces its probability of predation.
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DOI：
10.1155/1980/81062
发表时间：
1980-01-01
期刊：
Psyche (Cambridge)
影响因子：
--
作者：
EBERGARD W G
通讯作者：
EBERGARD W G
影响因子：
1.9
作者：
Skelhorn, John;Ruxton, Graeme D.
通讯作者：
Ruxton, Graeme D.
影响因子：
64.8
作者：
Heiling, AM;Herberstein, ME;Chittka, L
通讯作者：
Chittka, L
DOI：
10.1098/rspb.2012.0827
发表时间：
2012-09-07
影响因子：
4.7
作者：
Dyer, Adrian G.;Boyd-Gerny, Skye;Wong, Bob B. M.
通讯作者：
Wong, Bob B. M.
影响因子：
56.9
作者：
Skelhorn, John;Rowland, Hannah M.;Ruxton, Graeme D.
通讯作者：
Ruxton, Graeme D.