Influence of environmental quality on the diet of Astyanax in a microbasin of central western Brazil - doi: 10.4025/actascibiolsci.v35i2.15570
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Data de Publicação: | 2012 |
Outros Autores: | |
Tipo de documento: | Artigo |
Idioma: | por eng |
Título da fonte: | Acta Scientiarum Biological Sciences |
Texto Completo: | http://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/15570 |
Resumo: | This study analyzed physicochemical characteristics of the water, degradation of the surroundings and the influence of these factors on the diet of two fish species of Astyanax in Tarumã stream microbasin, central western Brazil. Fish were collected in eight sites between 2007 and 2010, using gillnets and sieves. Environmental variables were evaluated by a principal component analysis and the diet based on Spearman’s correlation. The variables width, type of riparian vegetation, pH, conductivity, total dissolved solids, temperature, oxidation and reduction potential, presence of waste, and altitude have separated the sampling sites into two groups: ‘less impacted’ and ‘more impacted’. The two characid species presented omnivorous habit, typical of disturbed environments. The consumption of food resources was different over the space: terrestrial plants and sediment were more important in the most impacted sites for both species. And specifically to Astyanax altiparanae the order of importance of the food was distinct between most and less impacted sites. These data indicated that the diet of these species is a suitable tool for analyzing the environmental quality of the studied sites. |
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Influence of environmental quality on the diet of Astyanax in a microbasin of central western Brazil - doi: 10.4025/actascibiolsci.v35i2.15570environmental degradationstreamsichthyofaunafoodInfluência da qualidade ambiental na dieta de peixes.This study analyzed physicochemical characteristics of the water, degradation of the surroundings and the influence of these factors on the diet of two fish species of Astyanax in Tarumã stream microbasin, central western Brazil. Fish were collected in eight sites between 2007 and 2010, using gillnets and sieves. Environmental variables were evaluated by a principal component analysis and the diet based on Spearman’s correlation. The variables width, type of riparian vegetation, pH, conductivity, total dissolved solids, temperature, oxidation and reduction potential, presence of waste, and altitude have separated the sampling sites into two groups: ‘less impacted’ and ‘more impacted’. The two characid species presented omnivorous habit, typical of disturbed environments. The consumption of food resources was different over the space: terrestrial plants and sediment were more important in the most impacted sites for both species. And specifically to Astyanax altiparanae the order of importance of the food was distinct between most and less impacted sites. These data indicated that the diet of these species is a suitable tool for analyzing the environmental quality of the studied sites.Universidade Estadual De Maringá2012-12-20info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionDieta de peixesapplication/pdfapplication/pdfhttp://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/1557010.4025/actascibiolsci.v35i2.15570Acta Scientiarum. Biological Sciences; Vol 35 No 2 (2013); 179-184Acta Scientiarum. Biological Sciences; v. 35 n. 2 (2013); 179-1841807-863X1679-9283reponame:Acta Scientiarum Biological Sciencesinstname:Universidade Estadual de Maringá (UEM)instacron:UEMporenghttp://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/15570/pdfhttp://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/15570/pdf_1Souza, Rosangela Guarisso deLima-Junior, Sidnei Eduardoinfo:eu-repo/semantics/openAccess2022-11-23T17:34:08Zoai:periodicos.uem.br/ojs:article/15570Revistahttp://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSciPUBhttp://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/oai||actabiol@uem.br1807-863X1679-9283opendoar:2022-11-23T17:34:08Acta Scientiarum Biological Sciences - Universidade Estadual de Maringá (UEM)false |
dc.title.none.fl_str_mv |
Influence of environmental quality on the diet of Astyanax in a microbasin of central western Brazil - doi: 10.4025/actascibiolsci.v35i2.15570 |
title |
Influence of environmental quality on the diet of Astyanax in a microbasin of central western Brazil - doi: 10.4025/actascibiolsci.v35i2.15570 |
spellingShingle |
Influence of environmental quality on the diet of Astyanax in a microbasin of central western Brazil - doi: 10.4025/actascibiolsci.v35i2.15570 Souza, Rosangela Guarisso de environmental degradation streams ichthyofauna food Influência da qualidade ambiental na dieta de peixes. |
title_short |
Influence of environmental quality on the diet of Astyanax in a microbasin of central western Brazil - doi: 10.4025/actascibiolsci.v35i2.15570 |
title_full |
Influence of environmental quality on the diet of Astyanax in a microbasin of central western Brazil - doi: 10.4025/actascibiolsci.v35i2.15570 |
title_fullStr |
Influence of environmental quality on the diet of Astyanax in a microbasin of central western Brazil - doi: 10.4025/actascibiolsci.v35i2.15570 |
title_full_unstemmed |
Influence of environmental quality on the diet of Astyanax in a microbasin of central western Brazil - doi: 10.4025/actascibiolsci.v35i2.15570 |
title_sort |
Influence of environmental quality on the diet of Astyanax in a microbasin of central western Brazil - doi: 10.4025/actascibiolsci.v35i2.15570 |
author |
Souza, Rosangela Guarisso de |
author_facet |
Souza, Rosangela Guarisso de Lima-Junior, Sidnei Eduardo |
author_role |
author |
author2 |
Lima-Junior, Sidnei Eduardo |
author2_role |
author |
dc.contributor.author.fl_str_mv |
Souza, Rosangela Guarisso de Lima-Junior, Sidnei Eduardo |
dc.subject.por.fl_str_mv |
environmental degradation streams ichthyofauna food Influência da qualidade ambiental na dieta de peixes. |
topic |
environmental degradation streams ichthyofauna food Influência da qualidade ambiental na dieta de peixes. |
description |
This study analyzed physicochemical characteristics of the water, degradation of the surroundings and the influence of these factors on the diet of two fish species of Astyanax in Tarumã stream microbasin, central western Brazil. Fish were collected in eight sites between 2007 and 2010, using gillnets and sieves. Environmental variables were evaluated by a principal component analysis and the diet based on Spearman’s correlation. The variables width, type of riparian vegetation, pH, conductivity, total dissolved solids, temperature, oxidation and reduction potential, presence of waste, and altitude have separated the sampling sites into two groups: ‘less impacted’ and ‘more impacted’. The two characid species presented omnivorous habit, typical of disturbed environments. The consumption of food resources was different over the space: terrestrial plants and sediment were more important in the most impacted sites for both species. And specifically to Astyanax altiparanae the order of importance of the food was distinct between most and less impacted sites. These data indicated that the diet of these species is a suitable tool for analyzing the environmental quality of the studied sites. |
publishDate |
2012 |
dc.date.none.fl_str_mv |
2012-12-20 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Dieta de peixes |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/15570 10.4025/actascibiolsci.v35i2.15570 |
url |
http://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/15570 |
identifier_str_mv |
10.4025/actascibiolsci.v35i2.15570 |
dc.language.iso.fl_str_mv |
por eng |
language |
por eng |
dc.relation.none.fl_str_mv |
http://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/15570/pdf http://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/15570/pdf_1 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf 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 35 No 2 (2013); 179-184 Acta Scientiarum. Biological Sciences; v. 35 n. 2 (2013); 179-184 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_ |
1799317395540541440 |