Astyanax fasciatus as bioindicator of water pollution of Rio dos Sinos, RS, Brazil

Astyanax fasciatus as bioindicator of water pollution of Rio dos Sinos, RS, Brazil

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.

Saved in:
Bibliographic Details
Main Authors: SCHULZ,U. H., MARTINS-JUNIOR,H.
Format: Digital revista
Language:English
Published: Instituto Internacional de Ecologia 2001
Online Access:http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1519-69842001000400010
Tags: Add Tag
No Tags, Be the first to tag this record!
id oai:scielo:S1519-69842001000400010
record_format ojs
spelling oai:scielo:S1519-698420010004000102002-05-24Astyanax fasciatus as bioindicator of water pollution of Rio dos Sinos, RS, BrazilSCHULZ,U. H.MARTINS-JUNIOR,H. Astyanax fasciatus biomonitoring heavy metals reproduction 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.info:eu-repo/semantics/openAccessInstituto Internacional de EcologiaBrazilian Journal of Biology v.61 n.4 20012001-11-01info:eu-repo/semantics/articletext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1519-69842001000400010en10.1590/S1519-69842001000400010
institution SCIELO
collection OJS
country Brasil
countrycode BR
component Revista
access En linea
databasecode rev-scielo-br
tag revista
region America del Sur
libraryname SciELO
language English
format Digital
author SCHULZ,U. H.
MARTINS-JUNIOR,H.
spellingShingle SCHULZ,U. H.
MARTINS-JUNIOR,H.
Astyanax fasciatus as bioindicator of water pollution of Rio dos Sinos, RS, Brazil
author_facet SCHULZ,U. H.
MARTINS-JUNIOR,H.
author_sort SCHULZ,U. H.
title Astyanax fasciatus as bioindicator of water pollution of Rio dos Sinos, RS, Brazil
title_short Astyanax fasciatus as bioindicator of water pollution of Rio dos Sinos, RS, Brazil
title_full Astyanax fasciatus as bioindicator of water pollution of Rio dos Sinos, RS, Brazil
title_fullStr Astyanax fasciatus as bioindicator of water pollution of Rio dos Sinos, RS, Brazil
title_full_unstemmed Astyanax fasciatus as bioindicator of water pollution of Rio dos Sinos, RS, Brazil
title_sort astyanax fasciatus as bioindicator of water pollution of rio dos sinos, rs, brazil
description 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.
publisher Instituto Internacional de Ecologia
publishDate 2001
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1519-69842001000400010
work_keys_str_mv AT schulzuh astyanaxfasciatusasbioindicatorofwaterpollutionofriodossinosrsbrazil
AT martinsjuniorh astyanaxfasciatusasbioindicatorofwaterpollutionofriodossinosrsbrazil
_version_ 1756426310706528256

Similar Items