Analysis and Identification of Sounds Produced by the Male Caribbean Fruit Fly, Anastrepha suspensa1

Abstract

The waveforms of 4 sounds (flight, aggression, premating, and signaling) produced by the ♂ Caribbean fruit fly, Anastrepha suspensa (Loew) were recorded and analyzed. The flight, aggression, and premating sounds are generated by continuous wing fanning. The signaling sound is also produced by wing fanning, but in a series of pulses. Each pulse has 2 distinct parts and each part has its fundamental frequency. The fundamental wingbeat frequency for the flight was 157 Hz, SE ± 0.93, aggression 156 Hz, SE ± 3.4, premating 147, SE ± 2.4, part 1 of signaling 143 Hz, SE ± 2.6, and part 2 of signaling 111 Hz, SE ± 1.6. The average pulse rate for the signaling sound was 1.5 pulses/sec, SE ± 0.1, with a pulse duration of 0.55 sec, SE ± 0.02 and a pulse interval of 0.94 sec, SE ± 0.08. A Fourier Analyzer was used to develop a frequency signature of each sound. The signature of each sound was distinctly different from the other three.