Genetic and morphological variability in South American rodent Oecomys (Sigmodontinae, Rodentia): evidence for a complex of species

  title={Genetic and morphological variability in South American rodent Oecomys (Sigmodontinae, Rodentia): evidence for a complex of species},
  author={Campos Caldas Rosa and Teresa Flores and Julio Cesar Pieczarka and Rog{\'e}rio Vieira Rossi and Maria Iracilda da Cunha Sampaio and Jorge das Dores Rissino and Paulo JS Amaral and Cleusa Yoshiko Nagamachi},
  journal={Journal of Genetics},
The rodent genus Oecomys (Sigmodontinae) comprises ~16 species that inhabit tropical and subtropical forests in Central America and South America. In this study specimens of Oecomys paricola Thomas, 1904 from Belém and Marajó island, northern Brazil, were investigated using cytogenetic, molecular and morphological analyses. Three karyotypes were found, two from Belém (2n = 68, fundamental number (FN) = 72 and 2n = 70, FN = 76) and a third from Marajó island (2n = 70, FN = 72). No molecular or… CONTINUE READING


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