Document Detail

Evolution and function of routine trichromatic vision in primates.
MedLine Citation:
PMID:  14686538     Owner:  NLM     Status:  MEDLINE    
Evolution of the red-green visual subsystem in trichromatic primates has been linked to foraging advantages, namely the detection of either ripe fruits or young leaves amid mature foliage. We tested competing hypotheses globally for eight primate taxa: five with routine trichromatic vision, three without. Routinely trichromatic species ingested leaves that were "red shifted" compared to background foliage more frequently than species lacking this trait. Observed choices were not the reddest possible, suggesting a preference for optimal nutritive gain. There were no similar differences for fruits although red-greenness may sometimes be important in close-range fruit selection. These results suggest that routine trichromacy evolved in a context in which leaf consumption was critical.
Peter W Lucas; Nathaniel J Dominy; Pablo Riba-Hernandez; Kathryn E Stoner; Nayuta Yamashita; Esteban Loría-Calderón; Wanda Petersen-Pereira; Yahaira Rojas-Durán; Ruth Salas-Pena; Silvia Solis-Madrigal; Daniel Osorio; Brian W Darvell
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Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Evolution; international journal of organic evolution     Volume:  57     ISSN:  0014-3820     ISO Abbreviation:  Evolution     Publication Date:  2003 Nov 
Date Detail:
Created Date:  2003-12-22     Completed Date:  2004-01-28     Revised Date:  2008-06-04    
Medline Journal Info:
Nlm Unique ID:  0373224     Medline TA:  Evolution     Country:  United States    
Other Details:
Languages:  eng     Pagination:  2636-43     Citation Subset:  IM    
Department of Anatomy, University of Hong Kong, 21 Sassoon Road, Hong Kong, People's Republic of China.
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MeSH Terms
Color Perception / physiology*
Feeding Behavior*
Plant Leaves
Primates / physiology*

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