Repeated call types in Hawaiian melon-headed whales (Peponocephala electra) Kaplan, Maxwell B. Mooney, T. Aran Sayigh, Laela S. Baird, Robin W. 2014-09-09T19:54:00Z 2014-09-09T19:54:00Z 2014-09
dc.description Author Posting. © Acoustical Society of America, 2014. This article is posted here by permission of Acoustical Society of America for personal use, not for redistribution. The definitive version was published in Journal of the Acoustical Society of America 136 (2014): 1394, doi:10.1121/1.4892759. en_US
dc.description.abstract Melon-headed whales are pantropical odontocetes that are often found near oceanic islands. While considered sound-sensitive, their bioacoustic characteristics are relatively poorly studied. The goal of this study was to characterize the vocal repertoire of melon-headed whales to determine whether they produce repeated calls that could assist in recognition of conspecifics. The first tag-based acoustic recordings of three melon-headed whales were analyzed. Tag records were visually and aurally inspected and all calls were individually extracted. Non-overlapping calls with sufficient signal-to-noise were then parameterized and visually grouped into categories of repeated call types. Thirty-six call categories emerged. Categories differed significantly in duration, peak and centroid frequency, and −3 dB bandwidth. Calls of a given type were more likely to follow each other than expected. These data suggest that repeated calls may function in individual, subgroup, or group recognition. Repeated call production could also serve to enhance signal detection in large groups with many individuals producing simultaneous calls. Results suggest that caution should be used in developing automatic classification algorithms for this species based on small sample sizes, as they may be dominated by repeated calls from a few individuals, and thus not representative of species- or population-specific acoustic parameters. en_US
dc.description.sponsorship This project was funded by the Office of Naval Research (award number: N000141110612; Program Manager Michael J. Weise), WHOI Marine Mammal Center, and the Sawyer and Penzance Endowed Funds, with additional field time funded by grants through Cascadia Research Collective by the National Oceanographic Partnership Program (through the Alaska SeaLife Center) and the Pacific Islands Fisheries Science Center. en_US
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dc.identifier.citation Journal of the Acoustical Society of America 136 (2014): 1394 en_US
dc.identifier.doi 10.1121/1.4892759
dc.language.iso en_US en_US
dc.publisher Acoustical Society of America en_US
dc.title Repeated call types in Hawaiian melon-headed whales (Peponocephala electra) en_US
dc.type Article en_US
dspace.entity.type Publication
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