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作者Zhang, Shichang;Mao, Kuei-Kai;Lin, Po-Ting;Hung, Wei;Piorkowski, Dakota;Liao, Chen-Pan;Tso, I-Min
出版日期201505
著作名稱Crypsis via leg clustering: twig masquerading in a spider
刊名Royal Society Open Science
2
3
頁數150007
被收錄索引SCI
主題動物
摘要The role of background matching in camouflage has been extensively studied. However, contour modification has received far less attention, especially in twig-mimicking species. Here, we studied this deceptive strategy by revealing a special masquerade tactic, in which the animals protract and cluster their legs linearly in the same axis with their bodies when resting, using the spider Ariamnes cylindrogaster as a model. We used cardboard papers to construct dummies resembling spiders in appearance and colour. To differentiate the most important factors in the concealment effect, we manipulated body size (long or short abdomen) and resting postures (leg clustered or spread) of the dummies and recorded the responses of predators to different dummy types in the field. The results showed that dummies with clustered legs received significantly less attention from predators, regardless of the body length. Thus, we conclude that A. cylindrogaster relies on the resting posture rather than body size for predator avoidance. This study provides, to the best of our knowledge, empirical evidence for the first time that twig-mimicking species can achieve effective camouflage by contour modification.
DOIhttps://doi.org/10.1098/rsos.150007
系統號NO000004929

Aug 16 2018 10:46:44
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