Data/hora: 05/06/2024 18:06:55

Provedor de dados: | 83
País: | Brazil
Título: | Chromosomal characterization of the bonytongue Arapaima gigas (Osteoglossiformes: Arapaimidae)
Autores: | Marques,Debora Karla; Venere,Paulo Cesar; Galetti Junior,Pedro Manoel.
Data: | 2006-06-01
Ano: | 2006
Palavras-chave: | Pirarucu; Karyotype; RDNA; Heterochromatin.
Resumo: | The mitotic chromosomes of the pirarucu Arapaima gigas inhabiting the middle Araguaia River and collected in the municipality of Araguaiana (MT, Brazil) were studied. The chromosomes were analyzed through Giemsa staining, C-banding, Ag-NOR staining and in situ hybridization using an 18S rRNA gene probe. The karyotype had 2n=56 comprising 14 biarmed and 14 uniarmed chromosome pairs in both sexes. No cytologically distinguishable sex chromosome was identified. A single NOR-bearing chromosome pair was detected by Ag-NOR staining and confirmed by 18S rDNA- FISH. Faint constitutive heterochromatin was C-banded in the centromeric region of some chromosomes.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252006000200007
Editor: | Sociedade Brasileira de Ictiologia
Relação: | 10.1590/S1679-62252006000200007
Formato: | text/html
Fonte: | Neotropical Ichthyology  v.4 n.2 2006
Fonte: | info:eu-repo/semantics/openAccess