The use of biomarkers for assessing effects of pollutant stress on fish species from a tropical river in Southeastern Brazil
Autor(a) principal: | |
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Data de Publicação: | 2017 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Acta Scientiarum Biological Sciences |
Texto Completo: | http://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/34293 |
Resumo: | Biomarkers are measurements within an organism that respond to environmental effects and are used as tools in bioassessment programs since they reflect physiological changes induced by exposure to pollutants. The hepatosomatic index (HSI) and the condition factor (CF) in three fish species Geophagus brasiliensis, Hypostomus affinis and Hypostomus auroguttatus were used to assess effects of pollutant stress in a tropical river during two seasons (dry and wet). Fish from the least disturbed sites had the lowest condition factor (CF) and the lowest HSI, whereas those from sites near pollutant discharges had the highest CF and HSI. Higher HSI and lower CF occurred during the dry season. It is suggested that species adapted to stressful conditions take advantage on food availability from organic loads or unoccupied niches by lesser tolerant species, increasing CF. We concluded that higher HSI values were directly associated with environmental stress whereas the higher CF values are related to availability of food resources derived from organic loads or other sources. CF and HSI are simple and cost-effective, thus suitable as routine screening tools in pollution monitoring, but caution should be taken in relating changes in physiological measurements and any specific pollutant to prevent misinterpretation. |
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The use of biomarkers for assessing effects of pollutant stress on fish species from a tropical river in Southeastern Brazilcondition factorhepatosomatic indexfishesmonitoringrivers.Ecologia de peixesBiomarkers are measurements within an organism that respond to environmental effects and are used as tools in bioassessment programs since they reflect physiological changes induced by exposure to pollutants. The hepatosomatic index (HSI) and the condition factor (CF) in three fish species Geophagus brasiliensis, Hypostomus affinis and Hypostomus auroguttatus were used to assess effects of pollutant stress in a tropical river during two seasons (dry and wet). Fish from the least disturbed sites had the lowest condition factor (CF) and the lowest HSI, whereas those from sites near pollutant discharges had the highest CF and HSI. Higher HSI and lower CF occurred during the dry season. It is suggested that species adapted to stressful conditions take advantage on food availability from organic loads or unoccupied niches by lesser tolerant species, increasing CF. We concluded that higher HSI values were directly associated with environmental stress whereas the higher CF values are related to availability of food resources derived from organic loads or other sources. CF and HSI are simple and cost-effective, thus suitable as routine screening tools in pollution monitoring, but caution should be taken in relating changes in physiological measurements and any specific pollutant to prevent misinterpretation. Universidade Estadual De Maringá2017-11-24info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/3429310.4025/actascibiolsci.v39i4.34293Acta Scientiarum. Biological Sciences; Vol 39 No 4 (2017); 431-439Acta Scientiarum. Biological Sciences; v. 39 n. 4 (2017); 431-4391807-863X1679-9283reponame:Acta Scientiarum Biological Sciencesinstname:Universidade Estadual de Maringá (UEM)instacron:UEMenghttp://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/34293/pdfCopyright (c) 2017 Acta Scientiarum. Biological Sciencesinfo:eu-repo/semantics/openAccessMorado, Claudio NonaAraújo, Francisco GersonGomes, Iracema David2022-02-17T22:00:07Zoai:periodicos.uem.br/ojs:article/34293Revistahttp://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSciPUBhttp://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/oai||actabiol@uem.br1807-863X1679-9283opendoar:2022-02-17T22:00:07Acta Scientiarum Biological Sciences - Universidade Estadual de Maringá (UEM)false |
dc.title.none.fl_str_mv |
The use of biomarkers for assessing effects of pollutant stress on fish species from a tropical river in Southeastern Brazil |
title |
The use of biomarkers for assessing effects of pollutant stress on fish species from a tropical river in Southeastern Brazil |
spellingShingle |
The use of biomarkers for assessing effects of pollutant stress on fish species from a tropical river in Southeastern Brazil Morado, Claudio Nona condition factor hepatosomatic index fishes monitoring rivers. Ecologia de peixes |
title_short |
The use of biomarkers for assessing effects of pollutant stress on fish species from a tropical river in Southeastern Brazil |
title_full |
The use of biomarkers for assessing effects of pollutant stress on fish species from a tropical river in Southeastern Brazil |
title_fullStr |
The use of biomarkers for assessing effects of pollutant stress on fish species from a tropical river in Southeastern Brazil |
title_full_unstemmed |
The use of biomarkers for assessing effects of pollutant stress on fish species from a tropical river in Southeastern Brazil |
title_sort |
The use of biomarkers for assessing effects of pollutant stress on fish species from a tropical river in Southeastern Brazil |
author |
Morado, Claudio Nona |
author_facet |
Morado, Claudio Nona Araújo, Francisco Gerson Gomes, Iracema David |
author_role |
author |
author2 |
Araújo, Francisco Gerson Gomes, Iracema David |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Morado, Claudio Nona Araújo, Francisco Gerson Gomes, Iracema David |
dc.subject.por.fl_str_mv |
condition factor hepatosomatic index fishes monitoring rivers. Ecologia de peixes |
topic |
condition factor hepatosomatic index fishes monitoring rivers. Ecologia de peixes |
description |
Biomarkers are measurements within an organism that respond to environmental effects and are used as tools in bioassessment programs since they reflect physiological changes induced by exposure to pollutants. The hepatosomatic index (HSI) and the condition factor (CF) in three fish species Geophagus brasiliensis, Hypostomus affinis and Hypostomus auroguttatus were used to assess effects of pollutant stress in a tropical river during two seasons (dry and wet). Fish from the least disturbed sites had the lowest condition factor (CF) and the lowest HSI, whereas those from sites near pollutant discharges had the highest CF and HSI. Higher HSI and lower CF occurred during the dry season. It is suggested that species adapted to stressful conditions take advantage on food availability from organic loads or unoccupied niches by lesser tolerant species, increasing CF. We concluded that higher HSI values were directly associated with environmental stress whereas the higher CF values are related to availability of food resources derived from organic loads or other sources. CF and HSI are simple and cost-effective, thus suitable as routine screening tools in pollution monitoring, but caution should be taken in relating changes in physiological measurements and any specific pollutant to prevent misinterpretation. |
publishDate |
2017 |
dc.date.none.fl_str_mv |
2017-11-24 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/34293 10.4025/actascibiolsci.v39i4.34293 |
url |
http://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/34293 |
identifier_str_mv |
10.4025/actascibiolsci.v39i4.34293 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
http://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/34293/pdf |
dc.rights.driver.fl_str_mv |
Copyright (c) 2017 Acta Scientiarum. Biological Sciences info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Copyright (c) 2017 Acta Scientiarum. Biological Sciences |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Universidade Estadual De Maringá |
publisher.none.fl_str_mv |
Universidade Estadual De Maringá |
dc.source.none.fl_str_mv |
Acta Scientiarum. Biological Sciences; Vol 39 No 4 (2017); 431-439 Acta Scientiarum. Biological Sciences; v. 39 n. 4 (2017); 431-439 1807-863X 1679-9283 reponame:Acta Scientiarum Biological Sciences instname:Universidade Estadual de Maringá (UEM) instacron:UEM |
instname_str |
Universidade Estadual de Maringá (UEM) |
instacron_str |
UEM |
institution |
UEM |
reponame_str |
Acta Scientiarum Biological Sciences |
collection |
Acta Scientiarum Biological Sciences |
repository.name.fl_str_mv |
Acta Scientiarum Biological Sciences - Universidade Estadual de Maringá (UEM) |
repository.mail.fl_str_mv |
||actabiol@uem.br |
_version_ |
1799317396851261440 |