Animal Cognition

, Volume 13, Issue 5, pp 771–776

The memory remains: long-term vocal recognition in Australian sea lions

Authors

    • Marine Mammal Research Group, Graduate School of the EnvironmentMacquarie University
    • Equipe Communications AcoustiquesCNPS, CNRS, Université Paris Sud
  • Robert G. Harcourt
    • Marine Mammal Research Group, Graduate School of the EnvironmentMacquarie University
  • Isabelle Charrier
    • Equipe Communications AcoustiquesCNPS, CNRS, Université Paris Sud
Short Communication

DOI: 10.1007/s10071-010-0322-0

Cite this article as:
Pitcher, B.J., Harcourt, R.G. & Charrier, I. Anim Cogn (2010) 13: 771. doi:10.1007/s10071-010-0322-0

Abstract

The ability to recognize other individuals plays an important role in mediating social interactions. As longitudinal studies are challenging, there is only limited evidence of long-term memory of individuals and concepts in mammals. We examined the ability of six wild Australian sea lions to discriminate between the voice of their mother and another adult female, both while they were dependent on their mother and when they were independent, 2 years after weaning. Here, we show that even after a long period of independence, juveniles retain the ability to identify their mother’s voice. Both when dependent and independent, animals showed stronger responses to maternal calls than to the calls of another female. This demonstration of recognition provides rare evidence of the long-term memory capabilities of wild mammals.

Keywords

Long-term memoryIndividual vocal recognitionNeophoca cinereaDiscriminationSocial communicationPinniped

Copyright information

© Springer-Verlag 2010