Consulta: creatorFacets:"Pessôa,Leila M"
Registros recuperados: 2
Data/hora: 03/06/2024 07:30:47

Chromosomal differentiation in Kerodon rupestris (rodentia: caviidae) from the brazilian semi-arid region
Provedor de dados: Mastozoología Neotropical
Autores: Lessa,Gisele; Corrêa,Margaret M. O; Pessôa,Leila M; Zappes,Ighor A.
Kerodon rupestris (Wied, 1820) is the most specialized species among caviid rodents and is endemic to the extensive rocky outcrops in the semi-arid region in Brazil. Herein we describe different karyotypes for K. rupestris, based on samples collected in Itapajé, Ceará (CE), Iraquara in Bahia (BA), and Botumirim in Minas Gerais (MG). Our samples included northern, center and southern populations in the range of the species dis­tribution. The results were compared with a karyotype from Pernambuco previously described for the species. The diploid number (2n = 52) was constant among the analyzed population samples, but the fundamental number (FN) varied from 92 in Itapajé (CE) and Iraquara (BA), to 94 in Botumirim (MG). Pericentric inversions affecting one...
Tipo: Info:eu-repo/semantics/report
Palavras-chave: C-Bands; Cytogenetics; Kerodon rupestris; NOR.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-93832013000200013

A new karyotype of Wiedomys pyrrhorhinus (Rodentia: Sigmodontinae) from Chapada Diamantina, northeastern Brazil
Provedor de dados: Revista Brasileira de Zoologia
Autores: Souza,Ana L. G; Corrêa,Margaret M. de O; Aguilar,Cecília T. de; Pessôa,Leila M.
A new karyotype of Wiedomys pyrrhorhinus (Wied, 1821) is described, including G- and C-banding and Ag-NOR sites from specimens collected in the municipality of Morro do Chapéu, situated in the northern region of the Chapada Diamantina, state of Bahia. Karyological studies of W. pyrrhorhinus have shown a constant diploid number (2n) of 62 with two different numbers of autosomal arms (FNa): 86 and 90, respectively. The new karyotype revealed 2n = 62 and FNa = 104, being the higher autosomal number found so far for this genus. The X chromosome is a large acrocentric and the Y chromosome is a small acrocentric. The analysis of the karyotype morphology suggests that this new karyotype is more closely related to the previous karyotype with 2n = 62 and FNa = 90,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ag-NOR sites; Caatinga; C-banding; G-banding; Red- nosed mouse.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702011000100013