Astyanax fasciatus as bioindicator of water pollution of Rio dos Sinos, RS, Brazil
Braz. j. biol
; 61(4): 615-622, Nov. 2001. mapas, tab
Artigo
em Inglês
| LILACS
| ID: lil-308290
Biblioteca responsável:
BR1.1
ABSTRACT
The effects of an increasing downriver pollution gradient on the reproductive system of Astyanax fasciatus were investigated in the Rio dos Sinos, RS. The comparison of mean oocyte diameters, gonadal indices and gonado-somatic relationships of specimens captured in polluted areas with individuals from unpolluted reference sites revealed a significant decrease of these parameters with increasing water pollution. High loads of organic and industrial sewage are considered responsible for these effects. Condition factors showed an inverse relationship, and increased significantly in downriver polluted areas. The declining gonadal indices showed that energy was allocated to somatic growth. The results of the study recommend the use of A. fasciatus in biomonitoring essays
Texto completo:
Disponível
Coleções:
Bases de dados internacionais
Contexto em Saúde:
ODS3 - Saúde e Bem-Estar
Base de dados:
LILACS
Assunto principal:
Reprodução
/
Poluição da Água
/
Peixes
/
Água Doce
Limite:
Animais
País/Região como assunto:
América do Sul
/
Brasil
Idioma:
Inglês
Revista:
Braz. j. biol
Ano de publicação:
2001
Tipo de documento:
Artigo
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