Echolocation click source parameters of Australian snubfin dolphins (Orcaella heinsohni)

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DOI

The Australian snubfin dolphin (Orcaella heinsohni) is endemic to Australian waters, yet little is known about its abundance and habitat use. To investigate the feasibility of Passive Acoustic Monitoring for snubfin dolphins, biosonar clicks were recorded in Cygnet Bay, Australia, using a four-element hydrophone array. Clicks had a mean source level of 200 +/- 5 dB re 1 mu Pa pp, transmission directivity index of 24 dB, mean centroid frequency of 98 +/- 9 kHz, and a root-mean-square bandwidth of 3163 kHz. Such properties lend themselves to passive acoustic monitoring, but are comparable to similarly-sized delphinids, thus requiring additional cues to discriminate between snubfins and sympatric species. (C) 2018 Acoustical Society of America.

Original languageEnglish
JournalJournal of the Acoustical Society of America
Volume143
Issue4
Pages (from-to)2564-2569
Number of pages6
ISSN0001-4966
DOIs
Publication statusPublished - 2018

    Research areas

  • INDO-PACIFIC HUMPBACK, NORTH-WESTERN AUSTRALIA, HIGH-FREQUENCY CLICKS, TURSIOPS-TRUNCATUS, HARBOR PORPOISES, SOUSA-CHINENSIS, NARROW-BAND, WILD, PATTERNS, SIGNALS

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