Seasonal shifts in the feeding of Pimelodella cf. gracilis (Osteichthyes, Siluriformes, Pimelodidae) in Amambai River, Mato Grosso do Sul State - DOI: 10.4025/actascibiolsci.v28i2.1028

Detalhes bibliográficos
Autor(a) principal: Viana, Lucilene Finoto
Data de Publicação: 2008
Outros Autores: Santos, Silvana Lima dos, Lima-Junior, Sidnei Eduardo
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/1028
Resumo: The aim of this study is to describe the diet and the feeding activity of Pimelodella cf. gracilis in Amambai river, Mato Grosso do Sul State, Brazil, along the four seasons of the year. For this, the stomach contents of 232 individuals were analyzed and their Stomach Fullness Index was calculated. The results indicate that this species is omnivorous and generalist, so it consumes feeding items of several origins, such as plant material, terrestrial and aquatic insects, mollusks, fish scales, sediments and non-identified material. Notwithstanding this, the plant material was predominant in the diet along the whole year, indicating that Pimelodella cf. gracilis tends to herbivorous habit. The composition of the basic diet changed seasonally, so we observed that allochthonous items have their importance increased in the warm and rainy seasons. Besides this, we also observed seasonal shifts in the feeding activity, probably due to climactic (temperature and precipitation) and physiological factors (reproductive cycle).
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spelling Seasonal shifts in the feeding of Pimelodella cf. gracilis (Osteichthyes, Siluriformes, Pimelodidae) in Amambai River, Mato Grosso do Sul State - DOI: 10.4025/actascibiolsci.v28i2.1028Variação sazonal na alimentação de Pimelodella cf. gracilis (Osteichthyes, Siluriformes, Pimelodidae) no rio Amambai, Estado de Mato Grosso do Sul - DOI: 10.4025/actascibiolsci.v28i2.1028Pimelodella cf gracilisdietahábito alimentarrio Amambai2.05.00.00-9 EcologiaThe aim of this study is to describe the diet and the feeding activity of Pimelodella cf. gracilis in Amambai river, Mato Grosso do Sul State, Brazil, along the four seasons of the year. For this, the stomach contents of 232 individuals were analyzed and their Stomach Fullness Index was calculated. The results indicate that this species is omnivorous and generalist, so it consumes feeding items of several origins, such as plant material, terrestrial and aquatic insects, mollusks, fish scales, sediments and non-identified material. Notwithstanding this, the plant material was predominant in the diet along the whole year, indicating that Pimelodella cf. gracilis tends to herbivorous habit. The composition of the basic diet changed seasonally, so we observed that allochthonous items have their importance increased in the warm and rainy seasons. Besides this, we also observed seasonal shifts in the feeding activity, probably due to climactic (temperature and precipitation) and physiological factors (reproductive cycle).Esse estudo teve como objetivo descrever a dieta e analisar a atividade alimentar de Pimelodella cf. gracilis no rio Amambai, Estado de Mato Grosso do Sul, ao longo das quatro estações do ano. Para tanto, analisou-se o conteúdo estomacal e calculou-se o Índice de Repleção Estomacal de 232 indivíduos. Os resultados obtidos demonstram que essa espécie é onívora e generalista, pois consome itens alimentares de origens diversas, tais como material vegetal, insetos terrestres e aquáticos, moluscos, escamas de peixes, sedimentos e material não-identificado. Apesar disso, o item material vegetal foi predominante na dieta ao longo de todo o ano, demonstrando que, embora onívora, essa espécie apresenta tendência à herbivoria. A dieta básica mostrou variações sazonais em sua composição, pois observou-se que alimentos alóctones têm sua importância aumentada nas estações mais quentes e chuvosas. Além disso, também foram registradas alterações sazonais na atividade alimentar, possivelmente influenciadas por fatores climáticos (temperatura e pluviosidade) e fisiológicos (ciclo reprodutivo).Universidade Estadual De Maringá2008-03-07info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/102810.4025/actascibiolsci.v28i2.1028Acta Scientiarum. Biological Sciences; Vol 28 No 2 (2006); 123-128Acta Scientiarum. Biological Sciences; v. 28 n. 2 (2006); 123-1281807-863X1679-9283reponame:Acta Scientiarum Biological Sciencesinstname:Universidade Estadual de Maringá (UEM)instacron:UEMporhttp://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/1028/508Viana, Lucilene FinotoSantos, Silvana Lima dosLima-Junior, Sidnei Eduardoinfo:eu-repo/semantics/openAccess2022-11-23T17:33:03Zoai:periodicos.uem.br/ojs:article/1028Revistahttp://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSciPUBhttp://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/oai||actabiol@uem.br1807-863X1679-9283opendoar:2022-11-23T17:33:03Acta Scientiarum Biological Sciences - Universidade Estadual de Maringá (UEM)false
dc.title.none.fl_str_mv Seasonal shifts in the feeding of Pimelodella cf. gracilis (Osteichthyes, Siluriformes, Pimelodidae) in Amambai River, Mato Grosso do Sul State - DOI: 10.4025/actascibiolsci.v28i2.1028
Variação sazonal na alimentação de Pimelodella cf. gracilis (Osteichthyes, Siluriformes, Pimelodidae) no rio Amambai, Estado de Mato Grosso do Sul - DOI: 10.4025/actascibiolsci.v28i2.1028
title Seasonal shifts in the feeding of Pimelodella cf. gracilis (Osteichthyes, Siluriformes, Pimelodidae) in Amambai River, Mato Grosso do Sul State - DOI: 10.4025/actascibiolsci.v28i2.1028
spellingShingle Seasonal shifts in the feeding of Pimelodella cf. gracilis (Osteichthyes, Siluriformes, Pimelodidae) in Amambai River, Mato Grosso do Sul State - DOI: 10.4025/actascibiolsci.v28i2.1028
Viana, Lucilene Finoto
Pimelodella cf gracilis
dieta
hábito alimentar
rio Amambai
2.05.00.00-9 Ecologia
title_short Seasonal shifts in the feeding of Pimelodella cf. gracilis (Osteichthyes, Siluriformes, Pimelodidae) in Amambai River, Mato Grosso do Sul State - DOI: 10.4025/actascibiolsci.v28i2.1028
title_full Seasonal shifts in the feeding of Pimelodella cf. gracilis (Osteichthyes, Siluriformes, Pimelodidae) in Amambai River, Mato Grosso do Sul State - DOI: 10.4025/actascibiolsci.v28i2.1028
title_fullStr Seasonal shifts in the feeding of Pimelodella cf. gracilis (Osteichthyes, Siluriformes, Pimelodidae) in Amambai River, Mato Grosso do Sul State - DOI: 10.4025/actascibiolsci.v28i2.1028
title_full_unstemmed Seasonal shifts in the feeding of Pimelodella cf. gracilis (Osteichthyes, Siluriformes, Pimelodidae) in Amambai River, Mato Grosso do Sul State - DOI: 10.4025/actascibiolsci.v28i2.1028
title_sort Seasonal shifts in the feeding of Pimelodella cf. gracilis (Osteichthyes, Siluriformes, Pimelodidae) in Amambai River, Mato Grosso do Sul State - DOI: 10.4025/actascibiolsci.v28i2.1028
author Viana, Lucilene Finoto
author_facet Viana, Lucilene Finoto
Santos, Silvana Lima dos
Lima-Junior, Sidnei Eduardo
author_role author
author2 Santos, Silvana Lima dos
Lima-Junior, Sidnei Eduardo
author2_role author
author
dc.contributor.author.fl_str_mv Viana, Lucilene Finoto
Santos, Silvana Lima dos
Lima-Junior, Sidnei Eduardo
dc.subject.por.fl_str_mv Pimelodella cf gracilis
dieta
hábito alimentar
rio Amambai
2.05.00.00-9 Ecologia
topic Pimelodella cf gracilis
dieta
hábito alimentar
rio Amambai
2.05.00.00-9 Ecologia
description The aim of this study is to describe the diet and the feeding activity of Pimelodella cf. gracilis in Amambai river, Mato Grosso do Sul State, Brazil, along the four seasons of the year. For this, the stomach contents of 232 individuals were analyzed and their Stomach Fullness Index was calculated. The results indicate that this species is omnivorous and generalist, so it consumes feeding items of several origins, such as plant material, terrestrial and aquatic insects, mollusks, fish scales, sediments and non-identified material. Notwithstanding this, the plant material was predominant in the diet along the whole year, indicating that Pimelodella cf. gracilis tends to herbivorous habit. The composition of the basic diet changed seasonally, so we observed that allochthonous items have their importance increased in the warm and rainy seasons. Besides this, we also observed seasonal shifts in the feeding activity, probably due to climactic (temperature and precipitation) and physiological factors (reproductive cycle).
publishDate 2008
dc.date.none.fl_str_mv 2008-03-07
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
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format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/1028
10.4025/actascibiolsci.v28i2.1028
url http://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/1028
identifier_str_mv 10.4025/actascibiolsci.v28i2.1028
dc.language.iso.fl_str_mv por
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dc.relation.none.fl_str_mv http://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/1028/508
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 28 No 2 (2006); 123-128
Acta Scientiarum. Biological Sciences; v. 28 n. 2 (2006); 123-128
1807-863X
1679-9283
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collection Acta Scientiarum Biological Sciences
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