Data/hora: 16/06/2024 09:24:17

Provedor de dados: | Brazilian Archives of Biology and Technology
País: | Brazil
Título: | Analyses of the sediment toxicity of Monjolinho River, São Carlos, São Paulo State, Brazil, using survey, growth and gill morphology of two fish species (Danio rerio and Poecilia reticulata)
Autores: | Campagna,Aline Fernanda; Fracácio,Renata; Rodrigues,Beatriz Kawamura; Eler,Márcia Noélia; Verani,Nelsy Fenerich; Espíndola,Evaldo Luiz Gaeta.
Data: | 2008-02-01
Ano: | 2008
Palavras-chave: | Sediment Toxicity; Danio rerio; Monjolinho River; Poecilia reticulata.
Resumo: | The objective of this work was to evaluate the toxicity of the sediments of the Monjolinho River (São Carlos - São Paulo/Brazil), through partial chronic toxicity bioassays with juveniles of D. rerio and P. reticulata. Histological analyses of the gills and biometric measurements were conducted to detect the possible deleterious effects that caused the death. In all points the sampled the alterations were found in the gills (hyperplasia, fusion of secondary lamellas and dilation of blood vessels), with the most intense lesions (second stage) occurring at the point two. The biometric analysis pointed to inadequate conditions for the growth of the test-organisms when exposed to the sediment samples. These results showed that the conditions of these environments were not suitable for the survival and growth of these fishes.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132008000100023
Editor: | Instituto de Tecnologia do Paraná - Tecpar
Relação: | 10.1590/S1516-89132008000100023
Formato: | text/html
Fonte: | Brazilian Archives of Biology and Technology  v.51 n.1 2008
Fonte: | info:eu-repo/semantics/openAccess