Behavioral Ecology and Sociobiology

, Volume 65, Issue 2, pp 333–340

Behavioral evidence for eavesdropping on prey song in two Palearctic sibling bat species

  • Patricia L. Jones
  • Rachel A. Page
  • Manfred Hartbauer
  • Björn M. Siemers
Original Paper

DOI: 10.1007/s00265-010-1050-9

Cite this article as:
Jones, P.L., Page, R.A., Hartbauer, M. et al. Behav Ecol Sociobiol (2011) 65: 333. doi:10.1007/s00265-010-1050-9

Abstract

Eavesdropping on prey communication signals has never before been reported for a Palearctic bat species. In this study, we investigated whether lesser and greater mouse-eared bats, Myotis blythii oxygnathus and Myotis myotis, find tettigoniid bushcrickets (Tettigoniidae) by eavesdropping on their mate-attraction song. Tettigoniids are known to be the most important prey item for M. blythii oxygnathus, while carabid beetles and other epigaeic arthropods are the most important prey for its sibling species, M. myotis, in many places in Europe. M. myotis locates walking beetles by listening for their rustling sounds. We compared these two species’ response to four acoustic prey cues: calling song of two tettigoniid species, the rustling sound made by walking carabid beetles, and a control tone. Individuals of both bat species attacked the speaker playing tettigoniid song, which clearly indicates that both species eavesdrop on prey-generated advertisement signals. There were, however, species differences in response. M. blythii oxygnathus exhibited stronger predatory responses to the calling song of two species of tettigoniid than to the beetle rustling sound or the control. M. myotis, in contrast, exhibited stronger predatory responses to the beetle rustling and to one tettigoniid species but not the other tettigoniid or the control. Our study (1) for the first time demonstrates eavesdropping on prey communication signals for Palearctic bats and (2) gives preliminary evidence for sensory niche partitioning between these two sympatric sibling bat species.

Keywords

Advertisement callEavesdroppingBatOrthopteraSensory ecologyNiche partitioningMyotis myotisMyotis blythii oxygnathusTettigonia cantansTettigonia viridissima

Supplementary material

View video
Video 1

Recording of a lesser mouse-eared bat, Myotis blythii oxygnathus, responding to playback of the calling song of the bushcricket species Tettigonia cantans. The speaker is in the center of the screen partially concealed by leaves. (MPG 4306 kb)

View video
Video 2

A different M. blythii oxygnathus individual responding to playback of the calling song of another bushcricket species, Tettigonia viridissima. (MPG 3658 kb)

View video
Video 3

Recording of a greater mouse-eared bat, Myotis myotis, responding to playback of the calling song of the bushcricket species Tettigonia cantans. (MPG 618 kb)

Copyright information

© Springer-Verlag 2010

Authors and Affiliations

  • Patricia L. Jones
    • 1
    • 2
  • Rachel A. Page
    • 1
    • 3
  • Manfred Hartbauer
    • 4
  • Björn M. Siemers
    • 1
  1. 1.Sensory Ecology GroupMax Planck Institute for OrnithologySeewiesenGermany
  2. 2.Section of Integrative BiologyUniversity of Texas at AustinAustinUSA
  3. 3.Smithsonian Tropical Research InstituteApartadoRepublic of Panama
  4. 4.Department of ZoologyKarl-Franzens UniversitätGrazAustria