Serially homologous ears perform frequency range fractionation in the praying mantis, Creobroter (Mantodea, Hymenopodidae).
Serially homologous ears perform frequency range fractionation in the praying mantis, Creobroter (Mantodea, Hymenopodidae).
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螳螂 Creobroter（Mantodea，Hymenopodidae）中的连续同源耳朵执行频率范围分级。
DOI：
10.1007/bf00190177
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发表时间：
1996
期刊：
影响因子：
--
通讯作者：
Yager,DD
中科院分区：
文献类型：
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作者：
Yager,DD
不像大多数螳螂有一个单一的听觉敏感区域，Creobroter属的物种在2-4和25-50 kHz的听觉同样敏感，在10-15 kHz的听觉相对不敏感-他们有一个W形的听力图。超声波的敏感性起源于一个听觉器官腹中线的后胸，非常类似于其他螳螂的耳朵。消融实验表明，低频敏感性来自一个系列同源的中胸听觉器官。细胞外记录表明，这两个耳朵在胸腔中的运作很大程度上，如果不是完全独立的话。低频反应具有较长的潜伏期，每个刺激的动作电位更多，并且与高频反应相比，随着SPL的增加而变化的模式不同。独立的中间神经元介导两个频率范围内的反应，但我们的证据表明，他们是两个系列同源的细胞集。两个听觉器官都没有表现出任何方向敏感性的生理证据。超声波在飞行的膜足螳螂中触发了一系列行为，就像在其他螳螂中一样，但是低频听觉在这些动物中的行为意义仍然是未知的。
Unlike most praying mantises that have a single region of auditory sensitivity, species in the genusCreobroterhave equally sensitive hearing at 2–4 and at 25–50 kHz and and are relatively insensitivity at 10–15 kHz — they have a W-shaped audiogram. Ultrasonic sensitivity originates from an auditory organ in the ventral midline of the metathorax that closely resembles the ear of other mantises. Ablation experiments demonstrate that low frequency sensitivity derives from a serially homologous mesothoracic auditory organ. Extracellular recordings suggest that these two ears operate largely, if not entirely, independently of one another in the thorax. The low frequency response has a longer latency, more action potentials per stimulus, and different patterns of change with increasing SPL than the high frequency response. Separate interneurons mediate responses in the two frequency ranges, but our evidence suggests that they are two serially homologous sets of cells. Neither auditory organ shows any physiological evidence of directional sensitivity. Ultrasound triggers a set of behaviors in flying hymenopodid mantises much like those in other mantises, but the behavioral significance of low frequency hearing in these animals is still unknown.