Sound production during mating and disturbance in the West Indian sweet potato weevil, Euscepes postfasciatus (Fairmaire) (Coleoptera : Curculionidae)

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Abstract

The production of courtship song, 87.9±8.5 ms in duration, by male Euscepes postfasciatus appears to be one step of the behavioral sequence leading to copulation. Females which had perceived the courtship song responded to this signal by remaining stationary and allowing males to mate, but unreceptive females or males produced disturbance songs, 22.5±1.9 ms or 16.9±2.2 ms in duration, respectively, and/or made jerky movements. When weevils were held with tweezers, they produced the disturbance song. This song may have a defense function.

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