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Frugivory and colour vision in Alouatta seniculus, a trichromatic platyrrhine monkey

Titre :	Frugivory and colour vision in Alouatta seniculus, a trichromatic platyrrhine monkey Ajouter au panier
Type de document :	Tiré à part
Sujets :	ALOUATTA SENICULUS ; TRICHROMACY ; VISUAL ECOLOGY ; FRUGIVORY Évolution
Résumé :	It is a long standing hypothesis that primate trichromacy evolved to help fruit-eating primates find fruits amongst leaves. We measured the reflectance spectra of fruits eaten by a trichromatic primate, Alouatta seniculus, in the rainforest of French Guiana, as well as those of the leaves that form the natural background to fruits. We develop a method of specifying these natural colour signals in a chromaticity diagram appropriate for A. seniculus. By treating the task facing frugivorous monkeys as a signal detection task, we show that the spectral tuning of the L and M cone pigments in A. seniculus is optimal for detecting fruits amongst leaves.
Date de publication :	1998
Format :	pp. 3321-3327., ill., graph., 28 réf.
Langue(s) :	Anglais
Lien vers la notice :	https://infodoc.agroparistech.fr/index.php?lvl=notice_display&id=151512