We are pleased to announce the publication of the following article:

Bowles, A.E., D.M. Grebner, W.B. Musser, J.S. Nash, and J.L. Crance. 2015. Disproportionate emission of bubble streams with killer whale biphonic calls: perspectives on production and function. JASA Express Letters 137(2): EL165-170.


Abstract:
Stereotyped pulsed calls were attributed to 11 killer whales (Orcinus orca) with and without synchronous bubble streams in three datasets collected from two facilities from 1993 to 2012. Calls with and without synchronous bubble streams and divergent overlapping high frequency components ("biphonic" vs "monophonic") were compared. Subjects produced bubbles significantly more often when calls had divergent high frequency components. However, acoustic features in one biphonic call shared by five subjects provided little evidence for an acoustic effect of synchronous bubble flow. Disproportionate bubbling supported other evidence that biphonic calls form a distinct category,
but suggested a function in short-range communication.


Ann E. Bowles, PhD
Hubbs-SeaWorld Research Institute
<mailto:[email protected]>[email protected]






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Ann E. Bowles, PhD | Program Leader, Bioacoustics
Hubbs-SeaWorld Research Institute
2595 Ingraham Street  |  San Diego  |  CA 92109
Phone: (619) 226-3870  |  Fax: (619) 226-3944
<mailto:[email protected]>[email protected] | www.hswri.org


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