STATISTICAL EVIDENCE FOR INDIVIDUAL SIGNATURE WHISTLES IN THE PACIFIC WHITESIDED DOLPHIN, LAGENORHYNCHUS OBLIQUIDENS
- 1 July 1970
- report
- Published by Defense Technical Information Center (DTIC)
Abstract
The whistles of three Pacific whitesided dolphins were analysed for signature content. While the whistles of these animals were the least stereotyped of any species studied in this regard to date, the hypothesis of a signature whistle in certain species of dolphins (if not all that whistle) was found to hold. Only two of the animals studied made enough whistles definitelyattributable to the individual to make definitive statements. The few whistles surely emitted by the third animal corroborated the other findings that such a signature whistle exists in this species. The whistle type of sound in one of the individuals studied seemed to grade into a pulsed type of sound referred to in earlier literature as a tin horn sound. Numerous sound spectrograms are used to illustrate the discussion.Keywords
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