Aquatic invertebrates disponibility for bentophagous fishes in two streams at the Iguaçu River basin, state of Paraná, Brazil

Detalhes bibliográficos
Autor(a) principal: Russo, Márcia Regina
Data de Publicação: 2008
Outros Autores: Ferreira, Anderson, Dias, Rosa Maria
Tipo de documento: Artigo
Idioma: por
Título da fonte: Acta Scientiarum Biological Sciences
Texto Completo: http://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/2313
Resumo: Analyzing aquatic organisms present in fish stomachs is a good way to determine their availability in the environment. This paper aims to determine aquatic organism availability (especially benthos) for bentophagous fishes and to analyze spatial, temporal and ontogenetic changes in their diets. Samples were monthly taken from March 2000 to February 2001, through electrofishing, in two streams of the Iguaçu River. The stomachs were analyzed (329 units) and the results expressed through volumetric method. The diet was composed of benthic invertebrates, especially insects from several orders, being Ephemeroptera (3 families), diptera (11 families) and Trichoptera (9 families) the most consumed ones. Therefore, these groups were the most available for fish feeding. The Spearman rank correlation results were highly significant, showing high spatial, temporal and ontogenetic similarity. The high aquatic resources availability may explain the genus Trichomycterus (Siluriformes, Trichomyspteridae) abundance in the streams.
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spelling Aquatic invertebrates disponibility for bentophagous fishes in two streams at the Iguaçu River basin, state of Paraná, BrazilDisponibilidade de invertebrados aquáticos para peixes bentófagos de dois riachos da bacia do rio Iguaçu, Estado do Paraná, Brasildietaalimentaçãovariações sazonaisvariações ontogenéticasbentofauna2.00.00.00-6 Ciências BiológicasAnalyzing aquatic organisms present in fish stomachs is a good way to determine their availability in the environment. This paper aims to determine aquatic organism availability (especially benthos) for bentophagous fishes and to analyze spatial, temporal and ontogenetic changes in their diets. Samples were monthly taken from March 2000 to February 2001, through electrofishing, in two streams of the Iguaçu River. The stomachs were analyzed (329 units) and the results expressed through volumetric method. The diet was composed of benthic invertebrates, especially insects from several orders, being Ephemeroptera (3 families), diptera (11 families) and Trichoptera (9 families) the most consumed ones. Therefore, these groups were the most available for fish feeding. The Spearman rank correlation results were highly significant, showing high spatial, temporal and ontogenetic similarity. The high aquatic resources availability may explain the genus Trichomycterus (Siluriformes, Trichomyspteridae) abundance in the streams.Assumindo que os organismos que os peixes consomem refletem sua disponibilidade no ambiente, os objetivos deste trabalho foram verificar, através da dieta, quais os principais organismos que compõem a bentofauna disponível para peixes bentófagos, e analisar as variações espaço-temporais e ontogenéticas na dieta deste grupo de peixes. As coletas foram realizadas mensalmente de março/2000 a fevereiro/2001 através de pesca elétrica em dois riachos da bacia do rio Iguaçu e os estômagos (n=329) analisados pelo método volumétrico. A análise da dieta revelou uma grande diversidade de invertebrados bênticos, principalmente insetos de várias ordens, sendo as mais consumidas Ephemeroptera, representada por três famílias, Diptera por onze e Trichoptera por nove famílias, sendo esses, os organismos mais disponíveis para a alimentação, além de diversos organismos menos representativos. Os resultados de correlação de Spearman foram altamente significativos, revelando forte similaridade espacial, temporal e ontogenética. Essa grande disponibilidade de recursos aquáticos, provavelmente seja a maior responsável pela elevada abundância de indivíduos do gênero Trichomycterus (Siluriformes, Trichomyspteridae) nos ambientes analisados.Universidade Estadual De Maringá2008-05-13info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/231310.4025/actascibiolsci.v24i0.2313Acta Scientiarum. Biological Sciences; Vol 24 (2002); 411-417Acta Scientiarum. Biological Sciences; v. 24 (2002); 411-4171807-863X1679-9283reponame:Acta Scientiarum Biological Sciencesinstname:Universidade Estadual de Maringá (UEM)instacron:UEMporhttp://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/2313/2279Russo, Márcia ReginaFerreira, AndersonDias, Rosa Mariainfo:eu-repo/semantics/openAccess2022-11-23T17:33:23Zoai:periodicos.uem.br/ojs:article/2313Revistahttp://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSciPUBhttp://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/oai||actabiol@uem.br1807-863X1679-9283opendoar:2022-11-23T17:33:23Acta Scientiarum Biological Sciences - Universidade Estadual de Maringá (UEM)false
dc.title.none.fl_str_mv Aquatic invertebrates disponibility for bentophagous fishes in two streams at the Iguaçu River basin, state of Paraná, Brazil
Disponibilidade de invertebrados aquáticos para peixes bentófagos de dois riachos da bacia do rio Iguaçu, Estado do Paraná, Brasil
title Aquatic invertebrates disponibility for bentophagous fishes in two streams at the Iguaçu River basin, state of Paraná, Brazil
spellingShingle Aquatic invertebrates disponibility for bentophagous fishes in two streams at the Iguaçu River basin, state of Paraná, Brazil
Russo, Márcia Regina
dieta
alimentação
variações sazonais
variações ontogenéticas
bentofauna
2.00.00.00-6 Ciências Biológicas
title_short Aquatic invertebrates disponibility for bentophagous fishes in two streams at the Iguaçu River basin, state of Paraná, Brazil
title_full Aquatic invertebrates disponibility for bentophagous fishes in two streams at the Iguaçu River basin, state of Paraná, Brazil
title_fullStr Aquatic invertebrates disponibility for bentophagous fishes in two streams at the Iguaçu River basin, state of Paraná, Brazil
title_full_unstemmed Aquatic invertebrates disponibility for bentophagous fishes in two streams at the Iguaçu River basin, state of Paraná, Brazil
title_sort Aquatic invertebrates disponibility for bentophagous fishes in two streams at the Iguaçu River basin, state of Paraná, Brazil
author Russo, Márcia Regina
author_facet Russo, Márcia Regina
Ferreira, Anderson
Dias, Rosa Maria
author_role author
author2 Ferreira, Anderson
Dias, Rosa Maria
author2_role author
author
dc.contributor.author.fl_str_mv Russo, Márcia Regina
Ferreira, Anderson
Dias, Rosa Maria
dc.subject.por.fl_str_mv dieta
alimentação
variações sazonais
variações ontogenéticas
bentofauna
2.00.00.00-6 Ciências Biológicas
topic dieta
alimentação
variações sazonais
variações ontogenéticas
bentofauna
2.00.00.00-6 Ciências Biológicas
description Analyzing aquatic organisms present in fish stomachs is a good way to determine their availability in the environment. This paper aims to determine aquatic organism availability (especially benthos) for bentophagous fishes and to analyze spatial, temporal and ontogenetic changes in their diets. Samples were monthly taken from March 2000 to February 2001, through electrofishing, in two streams of the Iguaçu River. The stomachs were analyzed (329 units) and the results expressed through volumetric method. The diet was composed of benthic invertebrates, especially insects from several orders, being Ephemeroptera (3 families), diptera (11 families) and Trichoptera (9 families) the most consumed ones. Therefore, these groups were the most available for fish feeding. The Spearman rank correlation results were highly significant, showing high spatial, temporal and ontogenetic similarity. The high aquatic resources availability may explain the genus Trichomycterus (Siluriformes, Trichomyspteridae) abundance in the streams.
publishDate 2008
dc.date.none.fl_str_mv 2008-05-13
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/2313
10.4025/actascibiolsci.v24i0.2313
url http://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/2313
identifier_str_mv 10.4025/actascibiolsci.v24i0.2313
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv http://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/2313/2279
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
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 24 (2002); 411-417
Acta Scientiarum. Biological Sciences; v. 24 (2002); 411-417
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
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