Electrophysiological Analysis of Neural Responses to Substrate Vibration in the Brown-Winged Green Bug, <i>Plautia stali</i>（Hemiptera: Pentatomidae）

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  • Mukai Hiromi
    Department of Forest Entomology, Forestry and Forest Products Research Institute
  • Skals Niels
    Department of Forest Entomology, Forestry and Forest Products Research Institute Department of Geosciences and Natural Resource Management, University of Copenhagen
  • Takanashi Takuma
    Department of Forest Entomology, Forestry and Forest Products Research Institute

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  • チャバネアオカメムシ（カメムシ目：カメムシ科）の基質振動に対する神経応答の電気生理学的解析
  • チャバネアオカメムシ(カメムシモク : カメムシカ)ノ キシツ シンドウ ニ タイスル シンケイ オウトウ ノ デンキ セイリガクテキ カイセキ

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Abstract

<p>Communication using substrate-borne vibrational signals is common in hemipteran insects. In the present study, we recorded the electrophysiological responses of the peripheral vibratory receptor neurons in the legs of the brown-winged green bug, Plautia stali Scott（Hemiptera: Pentatomidae）. We recorded vibration-induced spike potentials using tungsten electrodes in the middle part of the meso- and meta-thoracic coxa, and applied pure sine-wave stimuli to the tarsus using a function generator. The receptor neurons exhibited different thresholds in a frequency-dependent manner； the lowest one being 50 Hz. Our results suggest that the electrophysiological responses of the peripheral vibratory receptor neurons in the legs of P. stali are generally tuned to low-frequency ranges of up to 200 Hz, corresponding to the substrate-borne vibrational signals used in inter- or intra-specific communication.</p>

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