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Analise multivariada da evoluçãoo craniana em roedores Caviíneos: convergencia de trajetórias ontogeneticas (Multivariate analysis of skull evolution in Caviine rodents: convergence of ontogenetic trajectories)

S.F. dos Reis^I; J.F. da Cruz^II; C.J. Von Zuben^III

^IDepartamento de Parasitologia, Universidade Estadual de Campinas, Caixa Postal 6109, 13081 Campinas, SP, Brasil. Enviar correspondência para S.F.R
^IIMuseu Nacional, Quinta da Boa Vista, 20942 Rio de Janeiro, RJ, Brasil
^IIIInstituto de Biociências, UNESP, 13500 Rio Claro, SP, Brasil

ABSTRACT

The cranial shape of three caviine rodent genera was analyzed. Multivariate statistical analysis showed that the similarity in cranial shape is probably due to the convergence with size in the ontogenetic trajectories, estimated by regression analysis of individual scores derived from principal components analysis of morphometric cranial traits.

Keywords: multivariate; analysis; skull; evolution; Caviine; rodents; ontogenetic.

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