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Characterization of Australian fur seal vocalizations during the breeding season

journal contribution
posted on 2008-10-01, 00:00 authored by J Tripovich, R Canfield, T Rogers, John ArnouldJohn Arnould
The vocal repertoire, structure, and behavioral context of airborne vocalizations produced by Australian fur seals (Arctocephalus pusillus doriferus) are described using recordings made at a breeding colony on Kanowna Island, Bass Strait, Australia. The study identified six different call types: three produced by males (bark, guttural threat, and submissive call); five produced by females (bark, guttural threat, submissive call, growl, and pup attraction call) and the female attraction call produced by pups and yearlings. Vocalizations were compared according to age and sex classes. The overall structure and function of the pup attraction and female attraction call produced by females, yearlings, and pups, was similar. However, while similar in their overall appearance, certain call types have a lower fundamental frequency when compared with other fur seals. In addition, the male bark call alters in rate of production according to the context used, where calls are slower when males are stationary and advertising their territorial status and faster when males are involved in confrontations with other males or actively herding females. Further research is required to investigate changes in environmental conditions and their effects on shaping the call structure and communication in Australian fur seals.

History

Journal

Marine mammal science

Volume

24

Issue

4

Pagination

913 - 928

Publisher

Wiley-Blackwell Publishing

Location

Malden, Mass.

ISSN

0824-0469

eISSN

1748-7692

Language

eng

Publication classification

C1 Refereed article in a scholarly journal

Copyright notice

2008, Wiley-Blackwell Publishing