Seasonal and ontogenetic diet patterns of the freshwater pufferfish Colomesus asellus (Müller & Troschel, 1849) in the upper-middle Tocantins River

Detalhes bibliográficos
Autor(a) principal: Bartolette, Renata
Data de Publicação: 2018
Outros Autores: Rosa, Daniela Cristina Oliveira, Soares, Bruno Eleres, Beserra, Danielle Antunes, Albrecht, Miriam Pilz, Brito, Marcelo Fulgêncio Guedes
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/35282
Resumo:  We described the feeding habits of Colomesus asellus from riverbanks of the upper-middle Tocantins River, Central Brazil. Two sampling expeditions were carried out in August (dry season) and in October (rainy season) of 2013, downstream from the Lajeado Hydroelectric Power Plant, Tocantins state. The diet of C. asellus was characterized and compared between juveniles and adults and between individuals captured in the dry season and in the rainy season. Individuals exhibited marked temporal segregation, with a predominance of adults on the riverbanks during the dry season and the predominance of juveniles in the rainy season. The diet of this species was based on diverse benthic prey, mostly Ephemeroptera nymphs (Insecta). Contrary to our expectations, the diet composition of C. asellus was not influenced by seasonal changes or ontogenetic factors, but the size of individuals determined the number of prey consumed. Thus, C. asellus can be classified in its trophic ecology as an insectivore without relation with fish size and seasonality. 
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spelling Seasonal and ontogenetic diet patterns of the freshwater pufferfish Colomesus asellus (Müller & Troschel, 1849) in the upper-middle Tocantins Rivertrophic ecologybenthic preyinsectivore. We described the feeding habits of Colomesus asellus from riverbanks of the upper-middle Tocantins River, Central Brazil. Two sampling expeditions were carried out in August (dry season) and in October (rainy season) of 2013, downstream from the Lajeado Hydroelectric Power Plant, Tocantins state. The diet of C. asellus was characterized and compared between juveniles and adults and between individuals captured in the dry season and in the rainy season. Individuals exhibited marked temporal segregation, with a predominance of adults on the riverbanks during the dry season and the predominance of juveniles in the rainy season. The diet of this species was based on diverse benthic prey, mostly Ephemeroptera nymphs (Insecta). Contrary to our expectations, the diet composition of C. asellus was not influenced by seasonal changes or ontogenetic factors, but the size of individuals determined the number of prey consumed. Thus, C. asellus can be classified in its trophic ecology as an insectivore without relation with fish size and seasonality. Universidade Estadual De Maringá2018-03-28info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfapplication/pdfapplication/mswordhttp://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/3528210.4025/actascibiolsci.v40i1.35282Acta Scientiarum. Biological Sciences; Vol 40 (2018): Publicação Contínua; e35282Acta Scientiarum. Biological Sciences; v. 40 (2018): Publicação Contínua; e352821807-863X1679-9283reponame:Acta Scientiarum Biological Sciencesinstname:Universidade Estadual de Maringá (UEM)instacron:UEMenghttp://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/35282/pdfhttp://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/35282/751375145572http://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/35282/751375145573Copyright (c) 2018 Acta Scientiarum. Biological Sciencesinfo:eu-repo/semantics/openAccessBartolette, RenataRosa, Daniela Cristina OliveiraSoares, Bruno EleresBeserra, Danielle AntunesAlbrecht, Miriam PilzBrito, Marcelo Fulgêncio Guedes2022-02-17T21:59:53Zoai:periodicos.uem.br/ojs:article/35282Revistahttp://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSciPUBhttp://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/oai||actabiol@uem.br1807-863X1679-9283opendoar:2022-02-17T21:59:53Acta Scientiarum Biological Sciences - Universidade Estadual de Maringá (UEM)false
dc.title.none.fl_str_mv Seasonal and ontogenetic diet patterns of the freshwater pufferfish Colomesus asellus (Müller & Troschel, 1849) in the upper-middle Tocantins River
title Seasonal and ontogenetic diet patterns of the freshwater pufferfish Colomesus asellus (Müller & Troschel, 1849) in the upper-middle Tocantins River
spellingShingle Seasonal and ontogenetic diet patterns of the freshwater pufferfish Colomesus asellus (Müller & Troschel, 1849) in the upper-middle Tocantins River
Bartolette, Renata
trophic ecology
benthic prey
insectivore.
title_short Seasonal and ontogenetic diet patterns of the freshwater pufferfish Colomesus asellus (Müller & Troschel, 1849) in the upper-middle Tocantins River
title_full Seasonal and ontogenetic diet patterns of the freshwater pufferfish Colomesus asellus (Müller & Troschel, 1849) in the upper-middle Tocantins River
title_fullStr Seasonal and ontogenetic diet patterns of the freshwater pufferfish Colomesus asellus (Müller & Troschel, 1849) in the upper-middle Tocantins River
title_full_unstemmed Seasonal and ontogenetic diet patterns of the freshwater pufferfish Colomesus asellus (Müller & Troschel, 1849) in the upper-middle Tocantins River
title_sort Seasonal and ontogenetic diet patterns of the freshwater pufferfish Colomesus asellus (Müller & Troschel, 1849) in the upper-middle Tocantins River
author Bartolette, Renata
author_facet Bartolette, Renata
Rosa, Daniela Cristina Oliveira
Soares, Bruno Eleres
Beserra, Danielle Antunes
Albrecht, Miriam Pilz
Brito, Marcelo Fulgêncio Guedes
author_role author
author2 Rosa, Daniela Cristina Oliveira
Soares, Bruno Eleres
Beserra, Danielle Antunes
Albrecht, Miriam Pilz
Brito, Marcelo Fulgêncio Guedes
author2_role author
author
author
author
author
dc.contributor.author.fl_str_mv Bartolette, Renata
Rosa, Daniela Cristina Oliveira
Soares, Bruno Eleres
Beserra, Danielle Antunes
Albrecht, Miriam Pilz
Brito, Marcelo Fulgêncio Guedes
dc.subject.por.fl_str_mv trophic ecology
benthic prey
insectivore.
topic trophic ecology
benthic prey
insectivore.
description  We described the feeding habits of Colomesus asellus from riverbanks of the upper-middle Tocantins River, Central Brazil. Two sampling expeditions were carried out in August (dry season) and in October (rainy season) of 2013, downstream from the Lajeado Hydroelectric Power Plant, Tocantins state. The diet of C. asellus was characterized and compared between juveniles and adults and between individuals captured in the dry season and in the rainy season. Individuals exhibited marked temporal segregation, with a predominance of adults on the riverbanks during the dry season and the predominance of juveniles in the rainy season. The diet of this species was based on diverse benthic prey, mostly Ephemeroptera nymphs (Insecta). Contrary to our expectations, the diet composition of C. asellus was not influenced by seasonal changes or ontogenetic factors, but the size of individuals determined the number of prey consumed. Thus, C. asellus can be classified in its trophic ecology as an insectivore without relation with fish size and seasonality. 
publishDate 2018
dc.date.none.fl_str_mv 2018-03-28
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/35282
10.4025/actascibiolsci.v40i1.35282
url http://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/35282
identifier_str_mv 10.4025/actascibiolsci.v40i1.35282
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/35282/pdf
http://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/35282/751375145572
http://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/35282/751375145573
dc.rights.driver.fl_str_mv Copyright (c) 2018 Acta Scientiarum. Biological Sciences
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Copyright (c) 2018 Acta Scientiarum. Biological Sciences
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
application/pdf
application/msword
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 40 (2018): Publicação Contínua; e35282
Acta Scientiarum. Biological Sciences; v. 40 (2018): Publicação Contínua; e35282
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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