[MARMAM] Killer Whale Bubbling with Biphonic Calls

Ann E. Bowles abowles at hswri.com
Tue Feb 3 11:20:44 PST 2015

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.

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:abowles at hswri.org>abowles at hswri.org

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:abowles at hswri.org>abowles at hswri.org | www.hswri.org

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