Individuality embedded in the isolation calls of captive beluga whales (Delphinapterus leucas). Mishima, Y.; Morisaka, T.; Itoh, M.; Matsuo, I.; Sakaguchi, A.; and Miyamoto, Y. Zoological Letters, 1(1):27, BioMed Central Ltd, 10, 2015.
Individuality embedded in the isolation calls of captive beluga whales (Delphinapterus leucas) [pdf]Paper  Individuality embedded in the isolation calls of captive beluga whales (Delphinapterus leucas) [link]Website  abstract   bibtex   
Species with fission-fusion social systems tend to exchange individualized contact calls to maintain group cohesion. Signature whistles by bottlenose dolphins are unique compared to the contact calls of other non-human animals in that they include identity information independent of voice cues. Further, dolphins copy the signatures of conspecifics and use them to label specific individuals. Increasing our knowledge of the contact calls of other cetaceans that have a fluid social structure may thus help us better understand the evolutionary and adaptive significance of all forms of individually distinctive calls. It was recently reported that one type of broadband pulsed sounds (PS1), rather than whistles, may function as individualized contact calls in captive belugas. The objective of this study was to assess the function and individual distinctiveness of PS1 calls in an isolation context. Recordings were made from five captive belugas, including both sexes and various ages.
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 title = {Individuality embedded in the isolation calls of captive beluga whales (Delphinapterus leucas)},
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 year = {2015},
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 abstract = {Species with fission-fusion social systems tend to exchange individualized contact calls to maintain group cohesion. Signature whistles by bottlenose dolphins are unique compared to the contact calls of other non-human animals in that they include identity information independent of voice cues. Further, dolphins copy the signatures of conspecifics and use them to label specific individuals. Increasing our knowledge of the contact calls of other cetaceans that have a fluid social structure may thus help us better understand the evolutionary and adaptive significance of all forms of individually distinctive calls. It was recently reported that one type of broadband pulsed sounds (PS1), rather than whistles, may function as individualized contact calls in captive belugas. The objective of this study was to assess the function and individual distinctiveness of PS1 calls in an isolation context. Recordings were made from five captive belugas, including both sexes and various ages.},
 bibtype = {article},
 author = {Mishima, Yuka and Morisaka, Tadamichi and Itoh, Miho and Matsuo, Ikuo and Sakaguchi, Aiko and Miyamoto, Yoshinori},
 journal = {Zoological Letters},
 number = {1},
 keywords = {beluga}
}
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