Document Detail

Audiogram of a formerly stranded long-finned pilot whale (Globicephala melas) measured using auditory evoked potentials.
MedLine Citation:
PMID:  20802115     Owner:  NLM     Status:  MEDLINE    
Long-finned pilot whales are highly social odontocetes found in temperate and subpolar regions. This species is particularly known for its interaction with fisheries as well as its mass strandings. Recent tagging work has provided some information about pilot whales in the wild but, even though they have been successfully kept in captivity, little is known about their sensory capabilities. This study investigates the hearing abilities of a rehabilitated 2 year old male long-finned pilot whale. A complete audiogram was collected using auditory evoked potential techniques that included measurements of nine frequencies from 4 to 100 kHz presented as sinusoidally amplitude-modulated tones. The results indicated that the region of best hearing was between 11.2 and 50 kHz and the subject had relatively poor high frequency hearing compared with other odontocete species. This study emphasizes the importance of collecting basic hearing measurements from new species, understanding diagnostic life histories as well as continuously increasing the sample size of audiometry measurements within and between odontocete species as animals become available.
A F Pacini; P E Nachtigall; L N Kloepper; M Linnenschmidt; A Sogorb; S Matias
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Publication Detail:
Type:  Journal Article; Research Support, U.S. Gov't, Non-P.H.S.    
Journal Detail:
Title:  The Journal of experimental biology     Volume:  213     ISSN:  1477-9145     ISO Abbreviation:  J. Exp. Biol.     Publication Date:  2010 Sep 
Date Detail:
Created Date:  2010-08-30     Completed Date:  2010-11-29     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0243705     Medline TA:  J Exp Biol     Country:  England    
Other Details:
Languages:  eng     Pagination:  3138-43     Citation Subset:  IM    
Marine Mammal Research Program, Hawaii Institute of Marine Biology, University of Hawaii, Kailua, HI 96734, USA.
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MeSH Terms
Acoustic Stimulation
Audiometry / methods
Evoked Potentials, Auditory / physiology*
Hearing / physiology*
Hearing Tests
Whales, Pilot / physiology*

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