Data/hora: 05/06/2024 01:58:19

Provedor de dados: | 83
País: | Brazil
Título: | Cytogenetic description of Bunocephalus doriae Boulenger, 1902 (Siluriformes: Aspredinidae) from the Paraná River (Misiones, Argentina)
Autores: | Fenocchio,Alberto Sérgio; Swarça,Ana Cláudia.
Data: | 2012-01-01
Ano: | 2012
Palavras-chave: | AgNORs; C-banding; Chromosomes.
Resumo: | In this work, Bunocephalus doriae was cytogenetically analyzed. A karyotype with a diploid number of 2n= 50 comprising 6m, 10sm, 6st, and 28a (FN= 72) chromosomes was observed. The occurrence of an asymmetric karyotype with a large number of acrocentric chromosomes distinguishes this species from others the Order Siluriformes. An exclusive character observed is the first pair of subtelocentric as the largest chromosome pair of the complement. NORs detected using AgNO3 were located in the terminal regions, on the short arm of a subtelocentric chromosome pair (pair 11), in a secondary constriction. C-banding revealed heterochromatic centromeric regions on several chromosomes of the complement after C-banding. This is the first cytogenetic description of this species and the first cytogenetic report on a member of the family Aspredinidae.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252012000200022
Editor: | Sociedade Brasileira de Ictiologia
Relação: | 10.1590/S1679-62252012005000014
Formato: | text/html
Fonte: | Neotropical Ichthyology  v.10 n.2 2012
Fonte: | info:eu-repo/semantics/openAccess