Data/hora: 02/06/2024 04:58:36

Provedor de dados: | Brazilian Archives of Biology and Technology
País: | Brazil
Título: | Chromosomal differentiation between populations of Oligosarcus hepsetus (Teleostei, Characidae) from small tributaries at opposite margins of the Paraíba do Sul river (Brazil)
Autores: | Centofante,Liano; Bertollo,Luiz Antonio Carlos; Moreira-Filho,Orlando.
Data: | 2006-11-01
Ano: | 2006
Palavras-chave: | Fish; Headstream; Cytogenetic; Differentiation.
Resumo: | Cytogenetic analyses were carried out in two populations of Oligosarcus hepsetus from tributaries at opposite margins of the Paraíba do Sul river. The same diploid number was observed in both populations (2n=50), but they showed remarkable differences related to karyotype formula and distribution of rDNA sites as revealed by silver nitrate staining and in situ hybridization with 18S probes. The results suggested that the main channel of the Paraíba do Sul river acted as barrier to gene flow between populations.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132006000700016
Editor: | Instituto de Tecnologia do Paraná - Tecpar
Relação: | 10.1590/S1516-89132006000700016
Formato: | text/html
Fonte: | Brazilian Archives of Biology and Technology  v.49 n.6 2006
Fonte: | info:eu-repo/semantics/openAccess