Animal Cognition

, Volume 16, Issue 6, pp 945–959

Perception of individuality in bat vocal communication: discrimination between, or recognition of, interaction partners?

Authors

    • Institute of ZoologyUniversity of Veterinary Medicine Hannover Foundation
  • Rebecca Winter
    • Institute of ZoologyUniversity of Veterinary Medicine Hannover Foundation
  • A. K. Vinoth Kumar
    • School of Biological SciencesMadurai Kamaraj University
  • Sripathi Kandula
    • School of Biological SciencesMadurai Kamaraj University
  • Sabine Schmidt
    • Institute of ZoologyUniversity of Veterinary Medicine Hannover Foundation
Original Paper

DOI: 10.1007/s10071-013-0628-9

Cite this article as:
Kastein, H.B., Winter, R., Vinoth Kumar, A.K. et al. Anim Cogn (2013) 16: 945. doi:10.1007/s10071-013-0628-9

Abstract

Different cognitive processes underlying voice identity perception in humans may have precursors in mammals. A perception of vocal signatures may govern individualised interactions in bats, which comprise species living in complex social structures and are nocturnal, fast-moving mammals. This paper investigates to what extent bats recognise, and discriminate between, individual voices and discusses acoustic features relevant for accomplishing these tasks. In spontaneous presentation and habituation–dishabituation experiments, we investigated how Megaderma lyra perceives and evaluates stimuli consisting of contact call series with individual-specific signatures from either social partners or unknown individuals. Spontaneous presentations of contact call stimuli from social partners or unknown individuals elicited strong, but comparable reactions. In the habituation–dishabituation experiments, bats dishabituated significantly to any new stimulus. However, reactions were less pronounced to a novel stimulus from the bat used for habituation than to stimuli from other bats, irrespective of familiarity, which provides evidence for identity discrimination. A model separately assessing the dissimilarity of stimuli in syllable frequencies, syllable durations and inter-call intervals relative to learned memory templates accounted for the behaviour of the bats. With respect to identity recognition, the spontaneous presentation experiments were not conclusive. However, the habituation–dishabituation experiments suggested that the bats recognised voices of social partners as the reaction to a re-habituation stimulus differed after a dishabituation stimulus from a social partner and an unknown bat.

Keywords

BatsVocal communicationIndividual recognitionIndividual discriminationSocial call perceptionHabituation–dishabituation paradigm

Supplementary material

10071_2013_628_MOESM1_ESM.mp3 (294 kb)
Supplementary material 1_NOV (MP3 293 kb)
10071_2013_628_MOESM2_ESM.mp3 (294 kb)
Supplementary material 2_SP1 (MP3 293 kb)
10071_2013_628_MOESM3_ESM.mp3 (294 kb)
Supplementary material 3_SP2 (MP3 293 kb)
10071_2013_628_MOESM4_ESM.mp3 (294 kb)
Supplementary material 4_UNK (MP3 293 kb)
10071_2013_628_MOESM5_ESM.pdf (16 kb)
Supplementary material 5 (PDF 16 kb)
10071_2013_628_MOESM6_ESM.pdf (490 kb)
Supplementary material 6 (PDF 491 kb)

Copyright information

© Springer-Verlag Berlin Heidelberg 2013