Data/hora: 03/06/2024 08:06:15

Provedor de dados: 	103	
País: 	Brazil	
Título: 	A new karyotype of Wiedomys pyrrhorhinus (Rodentia: Sigmodontinae) from Chapada Diamantina, northeastern Brazil	
Autores: 	Souza,Ana L. G; Corrêa,Margaret M. de O; Aguilar,Cecília T. de; Pessôa,Leila M.	
Data: 	2011-02-01	
Ano: 	2011	
Palavras-chave: 	Ag-NOR sites; Caatinga; C-banding; G-banding; Red- nosed mouse.	
Resumo: 	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, described from Caetité, Bahia State. Further studies, comparing different populations of W. pyrrhorhinus, including molecular approaches, may help to better understand the geographical limits of each population and their phylogenetic relationships in the Caatinga biome	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702011000100013	
Editor: 	Sociedade Brasileira de Zoologia	
Relação: 	10.1590/S1984-46702011000100013	
Formato: 	text/html	
Fonte: 	Zoologia (Curitiba)  v.28 n.1 2011	
Fonte: 	info:eu-repo/semantics/openAccess