title: Polymorphic color vision in captive Uta Hick's cuxiús, or bearded sakis (Chiropotes utahickae).
abstract: The pitheciines (Chiropotes, Pithecia, and Cacajao) are frugivorous Neotropical primates that specialize on the predation of seeds from unripe fruits, usually cryptic against the foliage. However, little is known about the color vision distribution within this taxon, and even less about the abilities shared by these animals regarding discrimination of chromatic targets. The aim of this study was to evaluate the color vision perception of captive Uta Hick's cuxiús, or bearded sakis (Chiropotes utahickae) through a behavioral paradigm of color visual discrimination, as well as to estimate, by genetic studies, the number and kinds of medium to long wavelength cone photopigment (opsins) encoded by this species. Among 12 cuxiús (7 males and 5 females) studied only 1 female was diagnosed as a trichromat. Results from genotyping were in line with our behavioral data and showed that cuxiús carried one (dichromat) or two (trichromat) medium to long wavelength pigments alleles, demonstrating a color vision polymorphism in C. utahickae similar to the majority of Neotropical Primates.
authors.affiliation: Laboratory of Neurosciences and Behaviour, University of Brasília, Brasília, DF, Brazil.
authors.forename: Eldianne Moreira
authors.initials: EM
authors.lastname: de Lima
authors.forename: Daniel Marques Almeida
authors.initials: DM
authors.lastname: Pessoa
authors.forename: Leonardo
authors.initials: L
authors.lastname: Sena
authors.forename: Aline Grasielle Costa
authors.initials: AG
authors.lastname: de Melo
authors.forename: Paulo Henrique Gomes
authors.initials: PH
authors.lastname: de Castro
authors.forename: Ana Cristina
authors.initials: AC
authors.lastname: Oliveira-Mendes
authors.forename: Maria Paula Cruz
authors.initials: MP
authors.lastname: Schneider
authors.forename: Valdir Filgueiras
authors.initials: VF
authors.lastname: Pessoa
mesh_terms: D000483:Alleles; D000818:Animals; D003119:Color Perception Tests; D055253:Color Vision / Q000235:genetics* / Q000502:physiology; D055358:Cone Opsins / Q000235:genetics*; D005260:Female; D005838:Genotype; D008297:Male; D053820:Pitheciidae / Q000235:genetics* / Q000502:physiology; D011110:Polymorphism, Genetic
chemical_list: D055358:Cone Opsins
keywords: Munsell color system; behavior; discrimination; genotyping; pitheciines