Karyotypic analyses and morphological comments on the endemic and endangered Brazilian painted tree rat Callistomys pictus (Rodentia, Echimyidae)

Genetics and Molecular Biology

Karen Ventura²  Gilson Evaristo Iack Ximenes¹  Renata Pardini¹  Marcos A. Nóbrega De Sousa¹  Yatiyo Yonenaga-yassuda²  Maria José De J. Silva¹ 

[1],Universidade de São Paulo Instituto de Biociências Departamento de Genética e Biologia EvolutivaSão Paulo SP ,Brazil

关键词: Callistomys;    karyotype;    banding patterns;    Echimyinae;   

DOI  :  10.1590/S1415-47572008000400016

来源: SciELO

【 摘 要 】

The genus Callistomys belongs to the rodent family Echimyidae, subfamily Echimyinae, and its only living representative is Callistomys pictus, a rare and vulnerable endemic species of the state of Bahia, Brazil. Callistomys has been previously classified as Nelomys, Loncheres, Isothrix and Echimys. In this paper we present the karyotype of Callistomys pictus, including CBG and GTG-banding patterns and silver staining of the nucleolus organizer regions (Ag-NORs). Comments on Callistomys pictus morphological traits and a compilation of Echimyinae chromosomal data are also included. Our analyses revealed that Callistomys can be recognized both by its distintinctive morphology and by its karyotype.

【 授权许可】

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