Beluga whale, Delphinapterus leucas, vocalizations and their relation to behaviour in the Churchill River, Manitoba, Canada

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dc.contributor.supervisor Ferguson, Steven (Biological Sciences) en
dc.contributor.author Chmelnitsky, Elly
dc.date.accessioned 2010-09-13T15:31:23Z
dc.date.available 2010-09-13T15:31:23Z
dc.date.issued 2010-09-13T15:31:23Z
dc.identifier.uri http://hdl.handle.net/1993/4189
dc.description.abstract The investigation of a species’ repertoire and the contexts in which different calls are used is central to understanding vocal communication among animals. Beluga whale, Delphinapterus leucas, calls were classified and described in association with behaviours, from recordings collected in the Churchill River, Manitoba, during the summers of 2006-2008. Calls were subjectively classified based on sound and visual analysis into whistles (64.2% of total calls; 22 call types), pulsed or noisy calls (25.9%; 15 call types), and combined calls (9.9%; seven types). A hierarchical cluster analysis, using six call measurements as variables, separated whistles into 12 groups and results were compared to subjective classification. Beluga calls associated with social interactions, travelling, feeding, and interactions with the boat were described. Call type percentages, relative proportions of different whistle contours (shapes), average frequency, and call duration varied with behaviour. Generally, higher percentages of whistles, more broadband pulsed and noisy calls, and shorter calls (<0.49s) were produced during behaviours associated with higher levels of activity and/or apparent arousal. Information on call types, call characteristics, and behavioural context of calls can be used for automated detection and classification methods and in future studies on call meaning and function. en
dc.format.extent 2272709 bytes
dc.format.mimetype application/pdf
dc.language.iso en_US
dc.rights info:eu-repo/semantics/openAccess
dc.subject beluga en
dc.subject acoustic communication en
dc.subject call classification en
dc.subject behaviour en
dc.subject Hudson Bay en
dc.title Beluga whale, Delphinapterus leucas, vocalizations and their relation to behaviour in the Churchill River, Manitoba, Canada en
dc.type info:eu-repo/semantics/masterThesis
dc.degree.discipline Biological Sciences en
dc.contributor.examiningcommittee Hare, James (Biological Sciences) Stern, Gary (Environment and Geography) en
dc.degree.level Master of Science (M.Sc.) en
dc.description.note October 2010 en

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