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1 November 2008 Communication with Signals Produced by Abdominal Vibration, Tremulation, and Percussion in Podisus maculiventris (Heteroptera: Pentatomidae)
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Abstract

Mating behaviors of the predaceous spined soldier bug, Podisus maculiventris (Say) (Pentatomidae: Asopinae), were observed, and vibrational signals used in intraspecific communication were recorded and analyzed. Only males produced vibrational signals, using three different vibrational modes: vibration of the abdomen, percussion with the front legs, or tremulation of the body. When recorded on a nonresonant substrate (a loudspeaker membrane), the mean dominant frequency of signals produced by abdominal vibration varied between 90 and 140 Hz, and of tremulatory signals between 8 and 22 Hz. Percussion signals were broad-band, with the dominant frequency ≈97 Hz and lower amplitude spectral peaks between 1,500 and 3,000 Hz. In the courtship phase of mating behavior, males emitted pulse trains composed of an abdominal vibration after a tremulatory pulse. Females stimulated by signals of abdominal vibration and composite signals expressed searching behavior and orientation toward the source of vibration, whereas no specific reaction to tremulatory signals was observed. Observations of mating behavior and playback experiments showed that the abdominal vibration signals had both long range calling and short range recognition functions. Tremulatory signals were emitted at close range and were essential for copulation to occur. The sequences of fast and repeated percussion signals were emitted both as individual signals during calling and courting or between vibratory and tremulatory pulses. However, unlike the other vibrational signals, percussion did not seem to be emitted in a particular behavioral context, and its possible function in eliciting responses from females is unclear.

Alenka Žunič, Andrej Cokl, Meta Virant Doberlet, and Jocelyn G. Millar "Communication with Signals Produced by Abdominal Vibration, Tremulation, and Percussion in Podisus maculiventris (Heteroptera: Pentatomidae)," Annals of the Entomological Society of America 101(6), 1169-1178, (1 November 2008). https://doi.org/10.1603/0013-8746-101.6.1169
Received: 5 February 2008; Accepted: 1 August 2008; Published: 1 November 2008
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