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Interspecific cetacean interactions during the breeding season of humpback whale (Megaptera novaeangliae) on the north coast of Bahia State, Brazil
Published online by Cambridge University Press: 21 July 2009
Abstract
The large majority of cetacean interspecific studies report only on dolphin interactions, while studies on interactions between odontocete and mysticete are less common. The present work aims to report on sightings of cetacean interactions, during the breeding season of humpback whales (Megaptera novaeangliae), along 370 km of the Bahia State, north-eastern Brazil, addressing aspects of cetacean distribution and behaviour. During 7 seasons (2000–2006), a total of 230 research cruises were performed, in which 38 events of interactions among humpback whales and other cetaceans (Tursiops truncatus, Steno bredanensis, Peponocephala electra and Balaenoptera acutorostrata) were observed, plus another 5 encounters without the whale's presence, including T. truncatus, S. bredanensis, P. electra, Stenella clymene and Stenella attenuata. Our results confirm the occurrence of multiple cetacean species in the Bahia State, being the first study in the world to report on a large range of interactions involving another 4 cetacean species, grouped with up to 3 mixed species per sighting, with humpback whales in their annual breeding ground.
- Type
- Research Article
- Information
- Journal of the Marine Biological Association of the United Kingdom , Volume 89 , Special Issue 5: Cetaceans , August 2009 , pp. 961 - 966
- Copyright
- Copyright © Marine Biological Association of the United Kingdom 2009
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