Description of whistles of Irrawaddy dolphins (Orcaella brevirostris) from the waters of Matang, Peninsular Malaysia
| Autor: | Jordan M. Hoffman, Louisa S. Ponnampalam, Claryana Araújo-Wang, Samuel K. Hung, Sui Hyang Kuit, John Y. Wang |
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| Rok vydání: | 2016 |
| Předmět: |
0106 biological sciences
Passive acoustic monitoring Ecology biology 010604 marine biology & hydrobiology biology.organism_classification 010603 evolutionary biology 01 natural sciences Humpback dolphin Fishery Orcaella brevirostris Geography Sympatric speciation Ecology Evolution Behavior and Systematics Sousa chinensis |
| Zdroj: | Bioacoustics. 26:15-24 |
| ISSN: | 2165-0586 0952-4622 |
| DOI: | 10.1080/09524622.2016.1169558 |
| Popis: | The whistles of Irrawaddy dolphins (Orcaella brevirostris) from the waters of Matang, western Peninsular Malaysia are described. Duration, frequency and frequency modulation variables were measured from 163 whistles recorded using a broadband towed hydrophone. Irrawaddy dolphins produced whistles with a mean duration of 0.366 s (S.D. ± 0.217 s). The fundamental frequency of whistles extended from 3040 to 17,123 Hz with low levels of frequency modulation. These dolphins produced whistles that were comparable to those of conspecifics recorded from the waters of Kalimantan, but were generally different from the related Australian snubfin dolphin (O. heinsohni). They also differed from the whistles of the sympatric Indo-Pacific humpback dolphin (Sousa chinensis). Characteristics of Irrawaddy dolphin whistles may be useful in future passive acoustic monitoring studies to investigate differences in sympatric species and their habitat. |
| Databáze: | OpenAIRE |
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