Stereotyped acoustic signals of the killer whale Orcinus orca (Cetacea: Delphinidae) from the Northwestern Pacific

In this paper the classification of the discrete calls of killer whales recorded in the Northwest Pacific is presented. It was shown that most of the calls can be divided into 20 discrete types easily distinguished by ear. The frequency parameters of the sounds made the maximum contribution into dis...

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Bibliographic Details
Published in:Russian journal of marine biology 2008-03, Vol.34 (2), p.118-125
Main Authors: Shulezhko, T. S., Burkanov, V. N.
Format: Article
Language:English
Subjects:
Biomedical and Life Sciences
Cetacea
Delphinidae
Freshwater & Marine Ecology
Life Sciences
Marine
Orcinus orca
Zoology of Vertebrates
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Summary:In this paper the classification of the discrete calls of killer whales recorded in the Northwest Pacific is presented. It was shown that most of the calls can be divided into 20 discrete types easily distinguished by ear. The frequency parameters of the sounds made the maximum contribution into discrimination between call types, while their temporal parameters turned out to be less significant. The repertoires of stereotyped calls of killer whales from Chukot, Kamchatka, and the Commander and Kurile Islands were similar, due to the presence of shared types of calls. The greater the distance between the above-mentioned regions the fewer calls were shared by the resident killer whales. High vocal activity and the phenotypic features of the surveyed killer whales implied their attribution to the resident ecological type.
ISSN:1063-0740
1608-3377
DOI:10.1134/S1063074008020053