Asymmetry of leg use during prey handling in the spider Scytodes globula (Scytodidae)
Asymmetry of leg use during prey handling in the spider Scytodes globula (Scytodidae)
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DOI：
10.1023/a:1016337418472
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发表时间：
2002-07-01
影响因子：
1
通讯作者：
Ramires, EN
中科院分区：
文献类型：
--
作者：
Ades, C;Ramires, EN
在吐蜘蛛Scytodes globula收集在外地，前腿损失是更频繁的左侧比右侧，可能是作为一个结果的捕食情节。本实验室研究采用完整的S.将球状体与三种隐蛛（Loxosceles intermedia，L. gaucho和L.莱塔吐息蜘蛛对猎物的探测接触频率，左腿I明显高于右腿I。左腿II和右腿II在触摸频率上也有差异，但差异不太明显。这些结果可能代表了蜘蛛物种行为偏侧性的第一个证据，表明行为不对称可能是一种古老的进化特征。
In spitting spiders Scytodes globula collected in the field, anterior leg loss was more frequent on the left than on the right side, possibly as an outcome of predatory episodes. A laboratory study was performed in which intact adult females of S. globula were placed with individuals from three species of recluse spiders, Loxosceles intermedia, L. gaucho, and L. laeta. The frequency of probing touches by spitting spiders to their prey was significantly higher with left leg I than with right leg I. Left leg II and right leg II also differed in touching frequency, but in a less marked way. The results, which may represent the first evidence of behavioral laterality in a spider species, suggest that behavioral asymmetry may be an ancient evolutionary trait.