Data/hora: 05/06/2024 10:30:12

Provedor de dados: 	74	
País: 	Brazil	
Título: 	Cytotaxonomy of Parodon nasus and Parodon tortuosus (Pisces, Characiformes): A case of synonymy confirmed by cytogenetic analyses	
Autores: 	Bellafronte,Elisangela; Margarido,Vladimir Pavan; Moreira-Filho,Orlando.	
Data: 	2005-12-01	
Ano: 	2005	
Palavras-chave: 	Cytogenetics; Parodontidae; Systematics; 18S rDNA; 5S rDNA.	
Resumo: 	Morphological and cytogenetical studies were carried out on the freshwater fish Parodon nasus and Parodon tortuosus in order to evaluate a putative synonymy. The diploid chromosome number observed in both species was 2n = 54 (48M/SM and 6ST) with no differences between the sexes. Despite slight differences in the pattern of heterochromatin distribution and the number of cusps in symphysean teeth, the location of nucleolar organizer regions (NORs) and 5S rRNA genes (both species-specific features) were similar in both species. The remarkable similarity observed between these allopatric species supports recent taxonomical reviews indicating that P. tortuosus is a synonym for P. nasus.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572005000500010	
Editor: 	Sociedade Brasileira de Genética	
Relação: 	10.1590/S1415-47572005000500010	
Formato: 	text/html	
Fonte: 	Genetics and Molecular Biology  v.28 n.4 2005	
Fonte: 	info:eu-repo/semantics/openAccess