Diet of fish (Characiformes: Characidae) during early developmental stages in the Upper Paraná river basin, Brazil

Detalhes bibliográficos
Autor(a) principal: Soares, Claudemir Martins
Data de Publicação: 2017
Outros Autores: Hayashi, Carmino, Faria-Soares, Anna Christina Esper, Galdioli, Eliana Maria, Soares, Telma
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/36846
Resumo: This study analyzed the diet during early developmental stages of Astyanax lacustris (AA), Piaractus mesopotamicus (PM), Megaleporinus obtusidens (MO) and Prochilodus lineatus (PL), under experimental conditions. Fish larvae, 350 of each species, were stocked separately in 16 fiber-cement tanks (500 L), from which, three larvae of each species were collected every three days, for 36 days. Tanks were fertilized (1.5 g NPK-7: 14: 8) and had 50% of the surface with macrophytes. Larvae were grouped in age classes = I: 5 to 11, II: 14 to 20, III: 23 to 29 and IV: 32 to 38 days and, dissected for analysis of the digestive tract. Methodologies of dominance, frequency of occurrence and points of food items were used. For AA and PM larvae, measurements were taken for the number and size of organisms to determine the percent participation in biovolume. Changes in diets of larvae in different age classes were found as well as between different species, with the same age. Rotifers were dominant in the content of digestive tracts of all species at Class I, and the larvae diets became more distinct with increasing age, in which AA consumed mainly rotifers, PM, larger organisms (mainly cladocerans), PL, algae (diatoms as the main item) and PP with a more diversified diet (rotifers, ostracodes and algae). In conclusion, early stages of these species presented distinct diets, undergoing remarkable changes in the first 38 days of life. 
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spelling Diet of fish (Characiformes: Characidae) during early developmental stages in the Upper Paraná river basin, Brazilfish larvalstomach contentAstyanax lacustrisMegaleporinus obtusidensPiaractus mesopotamicusProchilodus lineatus.This study analyzed the diet during early developmental stages of Astyanax lacustris (AA), Piaractus mesopotamicus (PM), Megaleporinus obtusidens (MO) and Prochilodus lineatus (PL), under experimental conditions. Fish larvae, 350 of each species, were stocked separately in 16 fiber-cement tanks (500 L), from which, three larvae of each species were collected every three days, for 36 days. Tanks were fertilized (1.5 g NPK-7: 14: 8) and had 50% of the surface with macrophytes. Larvae were grouped in age classes = I: 5 to 11, II: 14 to 20, III: 23 to 29 and IV: 32 to 38 days and, dissected for analysis of the digestive tract. Methodologies of dominance, frequency of occurrence and points of food items were used. For AA and PM larvae, measurements were taken for the number and size of organisms to determine the percent participation in biovolume. Changes in diets of larvae in different age classes were found as well as between different species, with the same age. Rotifers were dominant in the content of digestive tracts of all species at Class I, and the larvae diets became more distinct with increasing age, in which AA consumed mainly rotifers, PM, larger organisms (mainly cladocerans), PL, algae (diatoms as the main item) and PP with a more diversified diet (rotifers, ostracodes and algae). In conclusion, early stages of these species presented distinct diets, undergoing remarkable changes in the first 38 days of life. Universidade Estadual De Maringá2017-11-24info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/3684610.4025/actascibiolsci.v39i4.36846Acta Scientiarum. Biological Sciences; Vol 39 No 4 (2017); 407-416Acta Scientiarum. Biological Sciences; v. 39 n. 4 (2017); 407-4161807-863X1679-9283reponame:Acta Scientiarum Biological Sciencesinstname:Universidade Estadual de Maringá (UEM)instacron:UEMenghttp://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/36846/pdfCopyright (c) 2017 Acta Scientiarum. Biological Sciencesinfo:eu-repo/semantics/openAccessSoares, Claudemir MartinsHayashi, CarminoFaria-Soares, Anna Christina EsperGaldioli, Eliana MariaSoares, Telma2022-02-17T22:00:09Zoai:periodicos.uem.br/ojs:article/36846Revistahttp://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSciPUBhttp://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/oai||actabiol@uem.br1807-863X1679-9283opendoar:2022-02-17T22:00:09Acta Scientiarum Biological Sciences - Universidade Estadual de Maringá (UEM)false
dc.title.none.fl_str_mv Diet of fish (Characiformes: Characidae) during early developmental stages in the Upper Paraná river basin, Brazil
title Diet of fish (Characiformes: Characidae) during early developmental stages in the Upper Paraná river basin, Brazil
spellingShingle Diet of fish (Characiformes: Characidae) during early developmental stages in the Upper Paraná river basin, Brazil
Soares, Claudemir Martins
fish larval
stomach content
Astyanax lacustris
Megaleporinus obtusidens
Piaractus mesopotamicus
Prochilodus lineatus.
title_short Diet of fish (Characiformes: Characidae) during early developmental stages in the Upper Paraná river basin, Brazil
title_full Diet of fish (Characiformes: Characidae) during early developmental stages in the Upper Paraná river basin, Brazil
title_fullStr Diet of fish (Characiformes: Characidae) during early developmental stages in the Upper Paraná river basin, Brazil
title_full_unstemmed Diet of fish (Characiformes: Characidae) during early developmental stages in the Upper Paraná river basin, Brazil
title_sort Diet of fish (Characiformes: Characidae) during early developmental stages in the Upper Paraná river basin, Brazil
author Soares, Claudemir Martins
author_facet Soares, Claudemir Martins
Hayashi, Carmino
Faria-Soares, Anna Christina Esper
Galdioli, Eliana Maria
Soares, Telma
author_role author
author2 Hayashi, Carmino
Faria-Soares, Anna Christina Esper
Galdioli, Eliana Maria
Soares, Telma
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Soares, Claudemir Martins
Hayashi, Carmino
Faria-Soares, Anna Christina Esper
Galdioli, Eliana Maria
Soares, Telma
dc.subject.por.fl_str_mv fish larval
stomach content
Astyanax lacustris
Megaleporinus obtusidens
Piaractus mesopotamicus
Prochilodus lineatus.
topic fish larval
stomach content
Astyanax lacustris
Megaleporinus obtusidens
Piaractus mesopotamicus
Prochilodus lineatus.
description This study analyzed the diet during early developmental stages of Astyanax lacustris (AA), Piaractus mesopotamicus (PM), Megaleporinus obtusidens (MO) and Prochilodus lineatus (PL), under experimental conditions. Fish larvae, 350 of each species, were stocked separately in 16 fiber-cement tanks (500 L), from which, three larvae of each species were collected every three days, for 36 days. Tanks were fertilized (1.5 g NPK-7: 14: 8) and had 50% of the surface with macrophytes. Larvae were grouped in age classes = I: 5 to 11, II: 14 to 20, III: 23 to 29 and IV: 32 to 38 days and, dissected for analysis of the digestive tract. Methodologies of dominance, frequency of occurrence and points of food items were used. For AA and PM larvae, measurements were taken for the number and size of organisms to determine the percent participation in biovolume. Changes in diets of larvae in different age classes were found as well as between different species, with the same age. Rotifers were dominant in the content of digestive tracts of all species at Class I, and the larvae diets became more distinct with increasing age, in which AA consumed mainly rotifers, PM, larger organisms (mainly cladocerans), PL, algae (diatoms as the main item) and PP with a more diversified diet (rotifers, ostracodes and algae). In conclusion, early stages of these species presented distinct diets, undergoing remarkable changes in the first 38 days of life. 
publishDate 2017
dc.date.none.fl_str_mv 2017-11-24
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/36846
10.4025/actascibiolsci.v39i4.36846
url http://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/36846
identifier_str_mv 10.4025/actascibiolsci.v39i4.36846
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/36846/pdf
dc.rights.driver.fl_str_mv Copyright (c) 2017 Acta Scientiarum. Biological Sciences
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Copyright (c) 2017 Acta Scientiarum. Biological Sciences
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 39 No 4 (2017); 407-416
Acta Scientiarum. Biological Sciences; v. 39 n. 4 (2017); 407-416
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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