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Interspecific differences in male vocalizations of three sympatric fur seals (Arctocephalus spp.)


Page, BC and Goldsworthy, SD and Hindell, MA and Mckenzie, J, Interspecific differences in male vocalizations of three sympatric fur seals (Arctocephalus spp.), Journal of Zoology, 258 pp. 49-56. ISSN 0022-5460 (2002) [Refereed Article]

DOI: doi:10.1017/S095283690200119X


This study investigated species recognition based on bark calls and full threat calls (FTCs) in three fur seal species, Antarctic Arctocephalus gazella, subantarctic A. tropicalis and New Zealand A. forsteri, that breed sympatrically and hybridize at subantarctic Macquarie Island. Bark calls, which are produced by males in male-female interactions, were more species-specific than their full threat calls, suggesting that bark calls could be used in species recognition and female mate choice. Further, the bark calls of A. tropicalis were more species-specific than those of A. gazella and A. forsteri, suggesting that divergence of calls between species is a consequence of phylogenetic distance, or has resulted from sexual selection through female mate choice. We believe the latter is more probable as we did not observe similar divergence in the FTCs of males. As such, the highly divergent bark calls of A. tropicalis may have resulted from sexual selection that has promoted pre-mating isolation via the process of reinforcement.

Item Details

Item Type:Refereed Article
Research Division:Environmental Sciences
Research Group:Environmental Science and Management
Research Field:Wildlife and Habitat Management
Objective Division:Environment
Objective Group:Ecosystem Assessment and Management
Objective Field:Ecosystem Assessment and Management of Antarctic and Sub-Antarctic Environments
UTAS Author:Page, BC (Mr Bradley Page)
UTAS Author:Hindell, MA (Professor Mark Hindell)
ID Code:25183
Year Published:2002
Web of Science® Times Cited:20
Deposited By:Zoology
Deposited On:2002-08-01
Last Modified:2011-08-02

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