Pupal vibratory signals of a group-living beetle that deter larvae: Are they mimics of predator cues?
Pupal vibratory signals of a group-living beetle that deter larvae: Are they mimics of predator cues?
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DOI：
10.4161/cib.19886
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发表时间：
2012-05-01
影响因子：
--
通讯作者：
Takanashi T
中科院分区：
文献类型：
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作者：
Kojima W;Ishikawa Y;Takanashi T
有些昆虫的蛹会发出声音或振动，但在大多数情况下，声音/振动的作用尚不清楚。最近，我们发现了一种生活在腐殖质土壤中的群居甲虫Typoxylus dichotoma的蛹和幼虫之间的振动通讯。蛹产生的振动信号可以阻止幼虫靠近，从而保护自己。在目前的研究中，我们验证了我们的假设，即蛹信号是与觅食鼹鼠相关的振动噪音的模仿，鼹鼠是二叉叶蜂最常见的捕食者。实验室实验中回放的鼹鼠振动阻止幼虫接近的方式与阻止蛹信号的方式相同。这些发现表明，为了阻止同种幼虫，二裂叶蜂的蛹可能通过发出欺骗性信号来利用幼虫对捕食者振动的预先存在的反应。
Pupae of some insects produce sounds or vibrations, but the function of the sounds/vibrations has not been clarified in most cases. Recently, we found vibratory communication between pupae and larvae of a group-living beetle Trypoxylus dichotoma, which live in humus soil. The vibratory signals produced by pupae were shown to deter approaching larvae, thereby protecting themselves. In the present study, we tested our hypothesis that pupal signals are mimics of vibratory noises associated with foraging of moles, the most common predators of T. dichotoma. Mole vibrations played back in laboratory experiments deterred larval approaches in the same way as pupal signals. These findings suggest that to deter conspecific larvae, pupae of T. dichotoma may have exploited a preexisting response of larvae to predator vibrations by emitting deceptive signals.