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首页> 外文期刊>The Journal of Experimental Biology >The visually controlled prey-capture behaviour of the European mantispid Mantispa styriaca
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The visually controlled prey-capture behaviour of the European mantispid Mantispa styriaca

机译：欧洲螳螂螳螂的视觉控制捕食行为

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Mantispids (Mantispa styriaca) are predatory insects; on bright sunny days, they wait in ambush for insect prey. The prey is captured as soon as it is within reach by means of lightning-speed strikes with the powerful forelegs, The strikes can take less than 60 ms, The mantispid accomplishes this almost as effectively as the larger praying mantis, which occupies a similar habitat, even though the praying mantis has apposition eyes with a high-resolution fovea, whereas the mantispid has unspecialized optical superposition eyes. Mantispa styriaca reacts to an item of prey when the latter covers a critical visual angle, The detection of prey immediately triggers adjustment reactions in the mantispid, which attempts to position the prey item in the visual field of both eyes and in the capture zone. Irrespective of the size of the prey, the capture reaction of the mantispid is always triggered if the distance to the prey falls below a certain critical value. As indicated by the analysis of individual video frames, immediately before an aimed strike, the item of prey is always positioned exactly in the centre of the binocular field of vision in the extended midsagittal plane of the mantispid's head. The strike may be triggered by the ommatidia of the left and right eyes, the lines of sight of which converge precisely on this region. The principal conclusion to be drawn is that the prey-capture behaviour of the mantispid appears to be based on a triangulation mechanism. [References: 31]
机译：螳螂（Mantispa styriaca）是掠食性昆虫;在晴朗的晴天，他们在伏击中等待昆虫的猎物。捕食者会通过强大的前肢以迅雷不及掩耳的速度击中猎物，捕食时间不到60毫秒。螳螂与大型螳螂在栖息地中的捕猎效果差不多，即使螳螂具有与高分辨率中央凹并置的眼睛，而螳螂具有非专业的光学叠加眼。当螳螂覆盖一个关键的视角时，螳螂会对其做出反应。猎物的检测立即触发螳螂的调节反应，从而试图将猎物放置在两只眼睛的视野和捕获区域中。无论猎物的大小如何，如果到猎物的距离低于某个临界值，总是会引发螳螂的捕获反应。正如对单个视频帧的分析所表明的那样，紧接在有针对性的打击之前，猎物始终准确地位于在螳螂的头部的中矢状平面中的双目视野的中心。左眼和右眼的眼痛可能会触发罢工，其视线正好会聚在该区域。要得出的主要结论是，螳螂的猎物捕获行为似乎是基于三角剖分机制的。 [参考：31]

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