Sexual dimorphism in the squirrel monkey, Saimiri sciureus (Linnaeus, 1758) and Saimiri ustus (I. Geoffroy, 1844) (Primates, Cebidae).

Autor: Goldschmidt B; Departamento de Primatologia, Centro de Criação de Animais de Laboratório, Fundação Oswaldo Cruz, Rio de Janeiro, RJ, Brazil. bibi@fiocruz.br, Mota-Marinho A, Araújo-Lopes C, Brück-Gonçalves MA, Matos-Fasano D, Ribeiro-Andrade MC, Ferreira-Nascimento LW, Simmer-Bravin J, Monnerat-Nogueira D
Jazyk: angličtina
Zdroj: Brazilian journal of biology = Revista brasleira de biologia [Braz J Biol] 2009 Feb; Vol. 69 (1), pp. 171-4.
DOI: 10.1590/s1519-69842009000100022
Abstrakt: Causes and implications of sexual dimorphism have been studied in several different primates using a variety of morphological characters such as body weight, canine length, coat color and ornamentation. Here we describe a peculiar coat color characteristic in the squirrel monkey that is present only in adult females over five years old and which increases with age. Neither males nor young animals manifest this phenomenon, which is characterized by a spot of black hairs located anteriorly to the external ear (pinna). This characteristic could be used to discriminate adult females of Saimiri sciureus in the wild without the need of capture techniques.
Databáze: MEDLINE