Colour discrimination in the black-tufted-ear marmoset (Callithrix penicillata): ecological implications.
Folia Primatol (Basel)
; 76(3): 125-34, 2005.
Article
en En
| MEDLINE
| ID: mdl-15900100
The dietary diversity of marmosets is substantial, which may reflect differences in their colour vision. This study examined the colour discrimination ability of a gummivore/insectivore callitrichid, Callithrix penicillata, which inhabits the Brazilian cerrado (bush savanna). A series of ecologically relevant tasks, involving a behavioural paradigm of discrimination learning in semi-natural conditions and the usage of ecologically relevant stimuli, was executed. Three marmosets, 2 males and a female, behaved like human dichromats, showing an impaired performance when orange and green stimuli had to be discriminated. In contrast, 2 females resembled human trichromats, discriminating those kinds of pairs. Our data suggest that Callithrix penicillata presents a polymorphic trichromacy, with dichromatic males and dichromatic or trichromatic females.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Callithrix
/
Percepción de Color
/
Aprendizaje Discriminativo
/
Conducta Alimentaria
Tipo de estudio:
Prognostic_studies
Límite:
Animals
País/Región como asunto:
America do sul
/
Brasil
Idioma:
En
Revista:
Folia Primatol (Basel)
Año:
2005
Tipo del documento:
Article
País de afiliación:
Brasil
Pais de publicación:
Países Bajos