Document Detail

Color vision in the California sea lion (Zalophus californianus).
MedLine Citation:
PMID:  1604834     Owner:  NLM     Status:  MEDLINE    
Three California sea lions were trained to discriminate between a colored stimulus and two shades of gray in a 3-fold simultaneous choice situation. The colors blue, green and red were tested against shades of gray varying from low to high relative brightness. All animals distinguished blue from gray; two animals also distinguished green from gray; but none discriminated between red and gray. Our data suggest that California sea lions have dichromatic color vision. Their ability to discriminate colors in the blue-green part of the spectrum could be a physiological adaptation to their aquatic coastal habitat.
U Griebel; A Schmid
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Vision research     Volume:  32     ISSN:  0042-6989     ISO Abbreviation:  Vision Res.     Publication Date:  1992 Mar 
Date Detail:
Created Date:  1992-07-16     Completed Date:  1992-07-16     Revised Date:  2004-11-18    
Medline Journal Info:
Nlm Unique ID:  0417402     Medline TA:  Vision Res     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  477-82     Citation Subset:  IM    
Department of Zoology, University of Vienna, Wien.
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MeSH Terms
Color Perception / physiology*
Discrimination (Psychology) / physiology
Sea Lions / physiology*

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