Consulta: subjectFacets:"São Francisco River basin"
Registros recuperados: 1
Data/hora: 01/06/2024 00:59:49

A new cave species of Rhamdia (Siluriformes: Heptapteridae) from Serra do Ramalho, northeastern Brazil, with notes on ecology and behavior
Provedor de dados: 83
Autores: Bichuette,Maria Elina; Trajano,Eleonora.
Rhamdia enfurnada, a new troglobitic (exclusively subterranean) catfish, is described from the Gruna do Enfurnado, Serra do Ramalho, southwestern Bahia State, middle São Francisco River basin. It differs from epigean congeners from the São Francisco River basin by the variable eye size, ranging from reduced to externally invisible (bilateral asymmetry in development of eyes is frequently observed), with a conspicuous orbital concavity (orbital diameter varying from 6.4 to 13.6% of head length in R. enfurnada and from 14.5 to 24.4% in the epigean species); by the dark pigmentation reduced due to a decrease in density of melanophores, and also variable. In comparison to other cave species, R. enfurnada presents a low degree of troglomorphism regarding...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Subterranean catfishes; Rhamdia enfurnada; Bahia; São Francisco River basin; Taxonomy.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252005000400016