Document Detail

Echolocation clicks of free-ranging Chilean dolphins (Cephalorhynchus eutropia).
MedLine Citation:
PMID:  20707424     Owner:  NLM     Status:  MEDLINE    
In this paper, evidence is provided that Chilean dolphins (Cephalorhynchus eutropia) produce ultrasonic echolocation clicks of the narrow-band high-frequency category. Echolocation clicks emitted during approaches of the hydrophones consisted only of narrow-band (rms-BW: 12.0 kHz) single pulses with mean centroid frequencies of about 126 kHz, peak frequencies of 126 kHz, and a 20 dB duration of 82.6 micros. The maximum received level measured exceeded 165 dB re 1 microPa. In addition, high repetition-rate buzzes were recorded during foraging behavior (click interval: 2 ms), but no whistles or calls with tonal components were detected.
Thomas Götz; Ricardo Antunes; Sonja Heinrich
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  The Journal of the Acoustical Society of America     Volume:  128     ISSN:  1520-8524     ISO Abbreviation:  J. Acoust. Soc. Am.     Publication Date:  2010 Aug 
Date Detail:
Created Date:  2010-08-16     Completed Date:  2011-01-27     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7503051     Medline TA:  J Acoust Soc Am     Country:  United States    
Other Details:
Languages:  eng     Pagination:  563-6     Citation Subset:  IM    
Sea Mammal Research Unit, Scottish Oceans Institute, University of St Andrews, St Andrews KY16 8LB, United Kingdom.
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MeSH Terms
Amplifiers, Electronic
Dolphins / physiology*
Signal Processing, Computer-Assisted
Sound Spectrography
Time Factors
Vocalization, Animal*

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