Data/hora: 14/06/2024 01:08:41

Provedor de dados: 	74	
País: 	Brazil	
Título: 	Cytogenetic studies in fishes of the genera Hassar, Platydoras and Opsodoras (Doradidae, Siluriformes) from Jarí and Xingú Rivers, Brazil	
Autores: 	Milhomem,Susana Suely Rodrigues; Souza,Augusto Cesar Paes de; Nascimento,Aline Lira do; Carvalho Jr.,Jaime Ribeiro; Feldberg,Eliana; Pieczarka,Julio Cesar; Nagamachi,Cleusa Yoshiko.	
Data: 	2008-01-01	
Ano: 	2008	
Palavras-chave: 	Chromosomes; Amazon; Biodiversity; Siluriformes; Banding; Fluorochromes.	
Resumo: 	We studied the karyotypes of Hassar cf. orestis and an undescribed Hassar species from the Jarí River and Opsodoras ternetzi, H. orestis and Platydoras cf. costatus from the Xingú River, all with 2n = 58. Constitutive heterochromatin is located in the centromere in most metacentric pairs; in some chromosomes this banding is not present, or it is located on the whole chromosome arm or in the distal regions. The NOR is located on a single biarmed pair at a distal region of the short arm in H. cf. orestis, H. orestis and P. cf. costatus at a distal region of the long arm in O. ternetzi and at a proximal region of the long arm in the Hassar species. In all species (except for Hassar sp.) the CMA3 analysis revealed a rich G-C region coincident with the NOR. Probably inversions occurred in the NOR chromosome during the chromosomal differentiation of the Doradidae species here described.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572008000200017	
Editor: 	Sociedade Brasileira de Genética	
Relação: 	10.1590/S1415-47572008000200017	
Formato: 	text/html	
Fonte: 	Genetics and Molecular Biology  v.31 n.1 suppl.0 2008	
Fonte: 	info:eu-repo/semantics/openAccess