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Bioacoustic papers in Nature‏‏

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Subject: Bioacoustic papers in Nature‏‏
From: Jianqiang XIAO <>
Date: Sat, 31 Jan 2009 01:48:27 +0800

Nature 457, 515 (29 January 2009) | doi:10.1038/457515c

Research Highlights

Animal acoustics: This whale goes to 11

J. Acoust. Soc. Am. doi:10.1121/1.3040028 (2009)

Killer whales (Orcinus orca; pictured) are a boisterous bunch, keeping track of 
each other in the underwater gloom by calling. Many whales, such as those 
resident in Puget Sound, near Seattle, Washington, have to contend with a great 
deal of noise made by motorized boats.

Marla Holt of the Northwest Fisheries Science Center in Seattle and her 
colleagues measured the calls of Puget Sound whales with a series of 
omnidirectional hydrophones. The whales pumped up the amplitude by one decibel 
for every extra decibel of background noise. The authors speculate that the 
increased effort may cost more energy, and that the noise may stress the whales 
or even disrupt their communications.



XIAO, Jianqiang, Ph.D.
Research Associate
Psychology Department
Rutgers University
152 Frelinghuysen Road
Piscataway, NJ 08854

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