Document Detail

The effect of colour vision status on the detection and selection of fruits by tamarins (Saguinus spp.).
MedLine Citation:
PMID:  12909697     Owner:  NLM     Status:  MEDLINE    
The evolution of trichromatic colour vision by the majority of anthropoid primates has been linked to the efficient detection and selection of food, particularly ripe fruits among leaves in dappled light. Modelling of visual signals has shown that trichromats should be more efficient than dichromats at distinguishing both fruits from leaves and ripe from unripe fruits. This prediction is tested in a controlled captive setting using stimuli recreated from those actually encountered by wild tamarins (Saguinus spp.). Dietary data and reflectance spectra of Abuta fluminum fruits eaten by wild saddleback (Saguinus fuscicollis) and moustached (Saguinus mystax) tamarins and their associated leaves were collected in Peru. A. fluminum leaves, and fruits in three stages of ripeness, were reproduced and presented to captive saddleback and red-bellied tamarins (Saguinus labiatus). Trichromats were quicker to learn the task and were more efficient at selecting ripe fruits than were dichromats. This is the first time that a trichromatic foraging advantage has been demonstrated for monkeys using naturalistic stimuli with the same chromatic properties as those encountered by wild animals.
Andrew C Smith; Hannah M Buchanan-Smith; Alison K Surridge; Daniel Osorio; Nicholas I Mundy
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Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  The Journal of experimental biology     Volume:  206     ISSN:  0022-0949     ISO Abbreviation:  J. Exp. Biol.     Publication Date:  2003 Sep 
Date Detail:
Created Date:  2003-08-11     Completed Date:  2004-05-24     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0243705     Medline TA:  J Exp Biol     Country:  England    
Other Details:
Languages:  eng     Pagination:  3159-65     Citation Subset:  IM    
Scottish Primate Research Group, Department of Psychology, University of Stirling, Stirling FK9 4LA, UK.
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MeSH Terms
Color Perception / physiology*
Feeding Behavior / physiology*
Fruit / chemistry*
Saguinus / physiology*

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