ABSTRACT
São Paulo harbors 231 mammal species until now. This is an estimate of its real diversity since manyregions of the State continue poorly surveyed, and also reflects the lack of taxonomic work for certain mammaltaxa. Nevertheless, our knowledge of the São Paulo mammals has increased in 20% in the last 12 years, especiallyin relation to bats and rodents. These new data are based in mammal inventories and also in the analysis ofspecimens housed in scientific collections associated with taxonomic revisions...
A fauna de mamíferos do estado de São Paulo consta de 231 táxons, sendo este número uma estimativa da real diversidade presente na região, dado a falta de amostragem em grandes extensões do estado, e também derevisões taxonômicas para determinados grupos. Ainda assim, nosso conhecimento aumentou em 20% desde aúltima estimativa em 1998, principalmente em relação aos quirópteros e roedores...
Subject(s)
Animals , Biota , Classification/methods , Mammals , Abiotic Factors/classification , Abiotic Factors/methods , Fauna/analysis , Fauna/classificationABSTRACT
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.
