Seasonal and ontogenetic diet patterns of the freshwater pufferfish Colomesus asellus (Müller & Troschel, 1849) in the upper-middle Tocantins River
Autor(a) principal: | |
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Data de Publicação: | 2018 |
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/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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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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1799317396928856064 |