Food spectrum and seasonal variation of the diet of Plagioscion squamosissimus (Heckel, 1840) (Osteichthyes, Sciaenidae) in Piató Lagoon, Assu, Rio Grande do Norte State, Brazil - DOI: 10.4025/actascibiolsci.v31i3.2140

Detalhes bibliográficos
Autor(a) principal: Costa, Simone Almeida Gavilan Leandro da
Data de Publicação: 2009
Outros Autores: Peretti, Danielle, Pinto Júnior, José Egberto Mesquita, Fernandes, Maria Aparecida, Gurgel Júnior, Antonio 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/2140
Resumo: The diet and seasonal variations in the feeding of Plagioscion squamosissimus were evaluated. Fishes were captured monthly at the Piató Lagoon, Assu, Rio Grande do Norte State, from August of 2004 to July of 2005, examined at a specific time of day. In laboratory, after obtaining the biometric data, fishes were opened and the guts extracted. The stomach contents were analyzed under stereoscopic microscope, and its items were identified and their volume was measured. Occurrence and volumetric frequencies and the food index were calculated. The items were grouped in seven main categories; shrimp and insects were predominant. The item classification made it possible to classify the species as carnivorous with carcinophagous-insectivore tendencies. In respect to seasonal variations, an alteration of the main items was observed according to the seasons, where insects prevailed in the dry season and shrimp stood out in the rainy season. In regards to capture periods, a twilight-nocturnal habit was observed, and activity periods are also marked by differences in the food type consumed, as shrimp prevailed in lower light and insects in brighter times.
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spelling Food spectrum and seasonal variation of the diet of Plagioscion squamosissimus (Heckel, 1840) (Osteichthyes, Sciaenidae) in Piató Lagoon, Assu, Rio Grande do Norte State, Brazil - DOI: 10.4025/actascibiolsci.v31i3.2140Espectro alimentar e variação sazonal da dieta de Plagioscion squamosissimus (Heckel, 1840) (Osteichthyes, Sciaenidae) na lagoa do Piató, Assu, Estado do Rio Grande do Norte, Brasil - DOI: 10.4025/actascibiolsci.v31i3.2140Plagioscion squamosissimusfeedingfreshwaterfood indexPlagioscion squamosissimusalimentaçãoágua doceíndice alimentarEcologiaThe diet and seasonal variations in the feeding of Plagioscion squamosissimus were evaluated. Fishes were captured monthly at the Piató Lagoon, Assu, Rio Grande do Norte State, from August of 2004 to July of 2005, examined at a specific time of day. In laboratory, after obtaining the biometric data, fishes were opened and the guts extracted. The stomach contents were analyzed under stereoscopic microscope, and its items were identified and their volume was measured. Occurrence and volumetric frequencies and the food index were calculated. The items were grouped in seven main categories; shrimp and insects were predominant. The item classification made it possible to classify the species as carnivorous with carcinophagous-insectivore tendencies. In respect to seasonal variations, an alteration of the main items was observed according to the seasons, where insects prevailed in the dry season and shrimp stood out in the rainy season. In regards to capture periods, a twilight-nocturnal habit was observed, and activity periods are also marked by differences in the food type consumed, as shrimp prevailed in lower light and insects in brighter times.Avaliaram-se a dieta e as variações sazonais na alimentação de Plagioscion squamosissimus, capturados mensalmente, na lagoa do Piató, Assu, Estado do Rio Grande do Norte, entre agosto de 2004 e julho de 2005, com despescas em horários específicos. Em laboratório, após a biometria, os peixes foram abertos e eviscerados. Sob microscópio estereoscópico, analisaram-se os conteúdos estomacais, cujos itens, depois de identificados, tiveram o seu volume medido. Foram calculadas as frequências de ocorrência e volumétrica e o índice alimentar. Agruparam-se os itens em sete categorias principais, e camarão e insetos foram as predominantes. A categorização dos itens permitiu classificar a espécie como carnívora com tendência a carcinofagia-insetivoria. Quanto à sazonalidade, observou-se uma alternância dos itens de acordo com as estações do ano: os insetos predominaram na estação seca e o camarão se sobressaiu na estação chuvosa. Considerando os períodos de captura, observou-se hábito crepuscular-noturno, e os horários de atividade também são marcados por diferenças no tipo de alimento consumido, pois o item camarão predominou nas horas de menor luminosidade; o item insetos, nas horas mais claras.Universidade Estadual De Maringá2009-07-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionDieta; indice alimentar; variação sazonalapplication/pdfhttp://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/214010.4025/actascibiolsci.v31i3.2140Acta Scientiarum. Biological Sciences; Vol 31 No 3 (2009); 285-292Acta Scientiarum. Biological Sciences; v. 31 n. 3 (2009); 285-2921807-863X1679-9283reponame:Acta Scientiarum Biological Sciencesinstname:Universidade Estadual de Maringá (UEM)instacron:UEMporhttp://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/2140/2140Costa, Simone Almeida Gavilan Leandro daPeretti, DaniellePinto Júnior, José Egberto MesquitaFernandes, Maria AparecidaGurgel Júnior, Antonio Mariainfo:eu-repo/semantics/openAccess2022-11-23T17:33:21Zoai:periodicos.uem.br/ojs:article/2140Revistahttp://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSciPUBhttp://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/oai||actabiol@uem.br1807-863X1679-9283opendoar:2022-11-23T17:33:21Acta Scientiarum Biological Sciences - Universidade Estadual de Maringá (UEM)false
dc.title.none.fl_str_mv Food spectrum and seasonal variation of the diet of Plagioscion squamosissimus (Heckel, 1840) (Osteichthyes, Sciaenidae) in Piató Lagoon, Assu, Rio Grande do Norte State, Brazil - DOI: 10.4025/actascibiolsci.v31i3.2140
Espectro alimentar e variação sazonal da dieta de Plagioscion squamosissimus (Heckel, 1840) (Osteichthyes, Sciaenidae) na lagoa do Piató, Assu, Estado do Rio Grande do Norte, Brasil - DOI: 10.4025/actascibiolsci.v31i3.2140
title Food spectrum and seasonal variation of the diet of Plagioscion squamosissimus (Heckel, 1840) (Osteichthyes, Sciaenidae) in Piató Lagoon, Assu, Rio Grande do Norte State, Brazil - DOI: 10.4025/actascibiolsci.v31i3.2140
spellingShingle Food spectrum and seasonal variation of the diet of Plagioscion squamosissimus (Heckel, 1840) (Osteichthyes, Sciaenidae) in Piató Lagoon, Assu, Rio Grande do Norte State, Brazil - DOI: 10.4025/actascibiolsci.v31i3.2140
Costa, Simone Almeida Gavilan Leandro da
Plagioscion squamosissimus
feeding
freshwater
food index
Plagioscion squamosissimus
alimentação
água doce
índice alimentar
Ecologia
title_short Food spectrum and seasonal variation of the diet of Plagioscion squamosissimus (Heckel, 1840) (Osteichthyes, Sciaenidae) in Piató Lagoon, Assu, Rio Grande do Norte State, Brazil - DOI: 10.4025/actascibiolsci.v31i3.2140
title_full Food spectrum and seasonal variation of the diet of Plagioscion squamosissimus (Heckel, 1840) (Osteichthyes, Sciaenidae) in Piató Lagoon, Assu, Rio Grande do Norte State, Brazil - DOI: 10.4025/actascibiolsci.v31i3.2140
title_fullStr Food spectrum and seasonal variation of the diet of Plagioscion squamosissimus (Heckel, 1840) (Osteichthyes, Sciaenidae) in Piató Lagoon, Assu, Rio Grande do Norte State, Brazil - DOI: 10.4025/actascibiolsci.v31i3.2140
title_full_unstemmed Food spectrum and seasonal variation of the diet of Plagioscion squamosissimus (Heckel, 1840) (Osteichthyes, Sciaenidae) in Piató Lagoon, Assu, Rio Grande do Norte State, Brazil - DOI: 10.4025/actascibiolsci.v31i3.2140
title_sort Food spectrum and seasonal variation of the diet of Plagioscion squamosissimus (Heckel, 1840) (Osteichthyes, Sciaenidae) in Piató Lagoon, Assu, Rio Grande do Norte State, Brazil - DOI: 10.4025/actascibiolsci.v31i3.2140
author Costa, Simone Almeida Gavilan Leandro da
author_facet Costa, Simone Almeida Gavilan Leandro da
Peretti, Danielle
Pinto Júnior, José Egberto Mesquita
Fernandes, Maria Aparecida
Gurgel Júnior, Antonio Maria
author_role author
author2 Peretti, Danielle
Pinto Júnior, José Egberto Mesquita
Fernandes, Maria Aparecida
Gurgel Júnior, Antonio Maria
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Costa, Simone Almeida Gavilan Leandro da
Peretti, Danielle
Pinto Júnior, José Egberto Mesquita
Fernandes, Maria Aparecida
Gurgel Júnior, Antonio Maria
dc.subject.por.fl_str_mv Plagioscion squamosissimus
feeding
freshwater
food index
Plagioscion squamosissimus
alimentação
água doce
índice alimentar
Ecologia
topic Plagioscion squamosissimus
feeding
freshwater
food index
Plagioscion squamosissimus
alimentação
água doce
índice alimentar
Ecologia
description The diet and seasonal variations in the feeding of Plagioscion squamosissimus were evaluated. Fishes were captured monthly at the Piató Lagoon, Assu, Rio Grande do Norte State, from August of 2004 to July of 2005, examined at a specific time of day. In laboratory, after obtaining the biometric data, fishes were opened and the guts extracted. The stomach contents were analyzed under stereoscopic microscope, and its items were identified and their volume was measured. Occurrence and volumetric frequencies and the food index were calculated. The items were grouped in seven main categories; shrimp and insects were predominant. The item classification made it possible to classify the species as carnivorous with carcinophagous-insectivore tendencies. In respect to seasonal variations, an alteration of the main items was observed according to the seasons, where insects prevailed in the dry season and shrimp stood out in the rainy season. In regards to capture periods, a twilight-nocturnal habit was observed, and activity periods are also marked by differences in the food type consumed, as shrimp prevailed in lower light and insects in brighter times.
publishDate 2009
dc.date.none.fl_str_mv 2009-07-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Dieta; indice alimentar; variação sazonal
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/2140
10.4025/actascibiolsci.v31i3.2140
url http://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/2140
identifier_str_mv 10.4025/actascibiolsci.v31i3.2140
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/2140/2140
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 31 No 3 (2009); 285-292
Acta Scientiarum. Biological Sciences; v. 31 n. 3 (2009); 285-292
1807-863X
1679-9283
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instname:Universidade Estadual de Maringá (UEM)
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