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

Detalhes bibliográficos
Autor(a) principal: SCHULZ,U. H.
Data de Publicação: 2001
Outros Autores: MARTINS-JUNIOR,H.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Brazilian Journal of Biology
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1519-69842001000400010
Resumo: 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.
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spelling Astyanax fasciatus as bioindicator of water pollution of Rio dos Sinos, RS, BrazilAstyanax fasciatusbiomonitoringheavy metalsreproductionThe 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.Instituto Internacional de Ecologia2001-11-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1519-69842001000400010Brazilian Journal of Biology v.61 n.4 2001reponame:Brazilian Journal of Biologyinstname:Instituto Internacional de Ecologia (IIE)instacron:IIE10.1590/S1519-69842001000400010info:eu-repo/semantics/openAccessSCHULZ,U. H.MARTINS-JUNIOR,H.eng2002-05-24T00:00:00Zoai:scielo:S1519-69842001000400010Revistahttps://www.scielo.br/j/bjb/https://old.scielo.br/oai/scielo-oai.phpbjb@bjb.com.br||bjb@bjb.com.br1678-43751519-6984opendoar:2002-05-24T00:00Brazilian Journal of Biology - Instituto Internacional de Ecologia (IIE)false
dc.title.none.fl_str_mv Astyanax fasciatus as bioindicator of water pollution of Rio dos Sinos, RS, Brazil
title Astyanax fasciatus as bioindicator of water pollution of Rio dos Sinos, RS, Brazil
spellingShingle Astyanax fasciatus as bioindicator of water pollution of Rio dos Sinos, RS, Brazil
SCHULZ,U. H.
Astyanax fasciatus
biomonitoring
heavy metals
reproduction
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
author SCHULZ,U. H.
author_facet SCHULZ,U. H.
MARTINS-JUNIOR,H.
author_role author
author2 MARTINS-JUNIOR,H.
author2_role author
dc.contributor.author.fl_str_mv SCHULZ,U. H.
MARTINS-JUNIOR,H.
dc.subject.por.fl_str_mv Astyanax fasciatus
biomonitoring
heavy metals
reproduction
topic Astyanax fasciatus
biomonitoring
heavy metals
reproduction
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.
publishDate 2001
dc.date.none.fl_str_mv 2001-11-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
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status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1519-69842001000400010
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1519-69842001000400010
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S1519-69842001000400010
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Instituto Internacional de Ecologia
publisher.none.fl_str_mv Instituto Internacional de Ecologia
dc.source.none.fl_str_mv Brazilian Journal of Biology v.61 n.4 2001
reponame:Brazilian Journal of Biology
instname:Instituto Internacional de Ecologia (IIE)
instacron:IIE
instname_str Instituto Internacional de Ecologia (IIE)
instacron_str IIE
institution IIE
reponame_str Brazilian Journal of Biology
collection Brazilian Journal of Biology
repository.name.fl_str_mv Brazilian Journal of Biology - Instituto Internacional de Ecologia (IIE)
repository.mail.fl_str_mv bjb@bjb.com.br||bjb@bjb.com.br
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