Temporal patterns of intra- and interspecific acoustic signals differ in two closely related species of Acanthoplus (Orthoptera: Tettigoniidae: Hetrodinae)

Zoology : Analysis of Complex Systems, ZACS
Kerstin Kowalski, Reinhard Lakes-Harlan

Abstract

Males of the closely related African tettigoniids Acanthoplus discoidales and Acanthoplus longipes produce a long-lasting calling song and a short disturbance sound. The temporal patterns of the sounds were analysed in respect to species differences and song type differences. The calling songs of both species consist of impulses which are separated into verses of two syllables, with fewer impulses in the first syllable. A. longipes produces more impulses in each syllable than A. discoidales and has longer verse durations, verse intervals and syllable intervals. Also, the disturbance sounds, produced after mechanical stimulation, contain distinct verses of impulses. The disturbance sound of A. longipes has a higher number of impulses per verse than that of A. discoidales. The frequency spectra of the songs in both species have similar peak frequencies (around 12.5 kHz) and both species have their greatest hearing sensitivity in the range between 5 and 10 kHz. Females of A. longipes perform phonotaxis only to songs with a species-specific temporal pattern. By contrast, females of A. discoidales react positively to calling songs of both species.

Citations

May 23, 2001·Acta Tropica·P E SchilmanG Manrique
Aug 2, 2001·Die Naturwissenschaften·A Stumpner, D von Helversen
Dec 15, 2005·Zoology : Analysis of Complex Systems, ZACS·Moushumi Sen SarmaJürgen Tautz
Nov 5, 2008·Journal of Comparative Physiology. A, Neuroethology, Sensory, Neural, and Behavioral Physiology·Joshua A Deily, J Schul
Jun 24, 2010·Journal of Insect Science·Kerstin Kowalski, Reinhard Lakes-Harlan

Related Concepts

Tettigonia viridissima
Syllable
Hetrodinae
Acanthodactylus longipes
Caelifera
Heterospathe longipes
Acutisoma longipes
Acanthoplus
Orthoptera
Gryllidae

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