Bioacoustic study of a sound produced with forced air by larvae of Phileurus didymus (Linnaeus) (Coleoptera: Scarabaeidae: Dynastinae: Phileurini)

Abstract

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Bioacoustic analysis of a compound sound with stridulation and forced air produced by the larva of Phileurus valgus (Olivier, 1789) (Coleoptera: Scarabaeidae: Dynastinae: Phileurini)

“…The larva emits an average of 4 short pulses per second at low levels of disturbance, and a maximum of 8 pulses per second at high levels of disturbance (when it is hurt or tightened). Comparing the audio data obtained from the P. didymus larvae bioacoustic study (Barria et al 2020) with that of P. valgus (this work), the following was obtained: The average duration of the medium pulses (from compound sound) was 0.246 seconds. The average duration obtained from the short pulses emitted by P. valgus larvae was 0.057 seconds; 0.052 seconds for P. didymus.…”

“…Behavior and response of the larvae to different stimulations. To obtain the response to different stimulations we used the experiments proposed by Barria et al (2020): Disturbance with a rod; Direct disturbance to the container; Response to near-larva object (Larvalarva interaction) and Open-air exposure of larvae. Additionally, we include three new experiments:…”

“…Forced air sounds are characterized by being "bass" and low-frequency sounds, while stridulation is higher-pitched and higherfrequency sounds. These sounds can have antidepredative functions, as well as social functions (Barria et al 2020).…”