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Chromosomal polymorphism in Akodon reinhardti Langguth, 1975 (Rodentia, Cricetidae)

Yatiyo Yonenaga-Yassuda^I; L.A. Pereira^II; J.L. Armada^II; Miriam L'Abbatel^I

^IDepartamento de Biologia, Instituto de Biociências, Universidade de São Paulo, Caixa Postal 11461, 05499 São Paulo, SP, Brasil. Send correspondence to Y.Y.-Y.
^IIDepartamento de Biologia Animal and Departamento de Genética, Instituto de Biologia, Universidade Federal Rural do Rio de Janeiro, Itaguai, Rio de Janeiro, Brasil

ABSTRACT

Cytogenetic studies were performed on 8 specimens of the rodent Akodon reinhardti Langguth, 1975 (Thalpomys lasiotis Thomas, 1916), from Parque Nacional de Brasília (Brasília, Brazil). Diploid numbers of 2n = 38 and 2n = 37 due to a Robertsonian rearrangement were found. G- and C-banding patterns, localization of the nucleolus organizer regions (NOR's) and R-banding obtained after 5-BrdU incorporation (RBA, RBG) are presented.

Keywords: chromosomal; polymorphism; Akodon reinhardti.

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