Journal of Comparative Physiology A

, Volume 180, Issue 2, pp 171–180

Can spectral cues contribute to species separation in closely related grasshoppers?

  • Jens Meyer
  • N. Elsner
ORIGINAL PAPER

DOI: 10.1007/s003590050038

Cite this article as:
Meyer, J. & Elsner, N. J Comp Physiol A (1997) 180: 171. doi:10.1007/s003590050038

Abstract

 The acridid grasshoppers Chorthippus biguttulus and Ch. mollis, which are closely related and often sympatric species, were compared intra- and interspecifically with regard to the spectra of their calling and courtship songs and of the sound-induced vibrations of the tympanal membrane, as well as the threshold curves of the tympanal nerve. In the low-frequency range but not in the ultrasound region, the maxima of these various curves fall at distinctly different frequencies in the two species. It is shown that the low-frequency sensitivity of the auditory system in both species, especially in females, is well matched to the conspecific song spectra but not to those of the heterospecific songs. Whether these characteristics actually contribute to species discrimination remains to be determined by behavioural tests.

Key words Sound productionHearingFrequency tuningGrasshoppersLaser-vibrometry

Copyright information

© Springer-Verlag Berlin Heidelberg 1997

Authors and Affiliations

  • Jens Meyer
    • 1
  • N. Elsner
    • 1
  1. 1.I. Zoologisches Institut der Universität Göttingen, Berliner Strasse 28, D-37073 Göttingen, Germany, Tel.: +49-551/395401, Fax: +49-551/395438, e-mail: nelsner1@gwdg.deDE