Survival and growth of larval pacamã Lophiosilurus alexandri Steindachner 1876 (Siluriformes, Pimelodidae), in three laboratory stocking densities

Detalhes bibliográficos
Autor(a) principal: López, Cristiane Machado
Data de Publicação: 2008
Outros Autores: Sampaio, Edson Vieira
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/2934
Resumo: The aim of this study was to evaluate the effect of three stocking densities on survival and growth of larval pacamã. The experiment was carried out in 12 flow-through systems of 0.43m2, with three distinct densities and four replicates each: 150 larvae/system (treatment 01), 250 larvae/system (treatment 02), and 500 larvae/system (treatment 03).The larvae were fed with zooplankton, enumerated and measured for length. With regard to survival pecentage, the treatments gave the following results: 01 - 60%, 02 - 49% and 03 - 37%. Wilcoxon’s Rank Sum Test showed a statistical difference between treatments 01 and 03 (P < 0.05). No such difference was found with regard to larval length, or physical and chemical features of water between the treatments. The results indicate a negative relationship between stocking density and larvae survival rate
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spelling Survival and growth of larval pacamã Lophiosilurus alexandri Steindachner 1876 (Siluriformes, Pimelodidae), in three laboratory stocking densitiesSobrevivência e crescimento larval do pacamã Lophiosilurus alexandri Steindachner 1876 (Siluriformes, Pimelodidae), em função de três densidades de estocagem em laboratóriopacamãlarviculturadensidade de estocagemsobrevivênciaalimentação2.00.00.00-6 Ciências BiológicasThe aim of this study was to evaluate the effect of three stocking densities on survival and growth of larval pacamã. The experiment was carried out in 12 flow-through systems of 0.43m2, with three distinct densities and four replicates each: 150 larvae/system (treatment 01), 250 larvae/system (treatment 02), and 500 larvae/system (treatment 03).The larvae were fed with zooplankton, enumerated and measured for length. With regard to survival pecentage, the treatments gave the following results: 01 - 60%, 02 - 49% and 03 - 37%. Wilcoxon’s Rank Sum Test showed a statistical difference between treatments 01 and 03 (P < 0.05). No such difference was found with regard to larval length, or physical and chemical features of water between the treatments. The results indicate a negative relationship between stocking density and larvae survival rateO objetivo deste trabalho foi avaliar o efeito de três densidades na estocagem larval do pacamã, com relação à sobrevivência e crescimento. O experimento foi realizado em 12 canaletas de 0,43m2, contando com três tratamentos e quatro repetições: 150 larvas/canaleta (tratamento 01), 250 larvas/canaleta (tratamento 02) e 500 larvas/canaleta (tratamento 03), as quais foram alimentadas com zooplâncton, quantificadas e medidas. Os tratamentos apresentaram os seguintes resultados quanto ao percentual de sobrevivência: 01 - 60%, 02 - 49%, e 03 - 37%. O teste-não paramétrico de significância “Wilcoxon’s Sum of Rank Test” demonstrou diferença estatisticamente significativa entre os tratamentos 01 e 03 (P < 0,05). Quanto ao comprimento total das larvas e às análises físicas e químicas da água dos diferentes tratamentos, não se obteve diferença significativa quando aplicado o mesmo teste. Os resultados sugerem que o aumento na densidade de estocagem influencia negativamente a taxa de sobrevivência das larvasUniversidade Estadual De Maringá2008-05-09info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/293410.4025/actascibiolsci.v22i0.2934Acta Scientiarum. Biological Sciences; Vol 22 (2000); 491-494Acta Scientiarum. Biological Sciences; v. 22 (2000); 491-4941807-863X1679-9283reponame:Acta Scientiarum Biological Sciencesinstname:Universidade Estadual de Maringá (UEM)instacron:UEMporhttp://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/2934/2119López, Cristiane MachadoSampaio, Edson Vieirainfo:eu-repo/semantics/openAccess2022-11-23T17:33:31Zoai:periodicos.uem.br/ojs:article/2934Revistahttp://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSciPUBhttp://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/oai||actabiol@uem.br1807-863X1679-9283opendoar:2022-11-23T17:33:31Acta Scientiarum Biological Sciences - Universidade Estadual de Maringá (UEM)false
dc.title.none.fl_str_mv Survival and growth of larval pacamã Lophiosilurus alexandri Steindachner 1876 (Siluriformes, Pimelodidae), in three laboratory stocking densities
Sobrevivência e crescimento larval do pacamã Lophiosilurus alexandri Steindachner 1876 (Siluriformes, Pimelodidae), em função de três densidades de estocagem em laboratório
title Survival and growth of larval pacamã Lophiosilurus alexandri Steindachner 1876 (Siluriformes, Pimelodidae), in three laboratory stocking densities
spellingShingle Survival and growth of larval pacamã Lophiosilurus alexandri Steindachner 1876 (Siluriformes, Pimelodidae), in three laboratory stocking densities
López, Cristiane Machado
pacamã
larvicultura
densidade de estocagem
sobrevivência
alimentação
2.00.00.00-6 Ciências Biológicas
title_short Survival and growth of larval pacamã Lophiosilurus alexandri Steindachner 1876 (Siluriformes, Pimelodidae), in three laboratory stocking densities
title_full Survival and growth of larval pacamã Lophiosilurus alexandri Steindachner 1876 (Siluriformes, Pimelodidae), in three laboratory stocking densities
title_fullStr Survival and growth of larval pacamã Lophiosilurus alexandri Steindachner 1876 (Siluriformes, Pimelodidae), in three laboratory stocking densities
title_full_unstemmed Survival and growth of larval pacamã Lophiosilurus alexandri Steindachner 1876 (Siluriformes, Pimelodidae), in three laboratory stocking densities
title_sort Survival and growth of larval pacamã Lophiosilurus alexandri Steindachner 1876 (Siluriformes, Pimelodidae), in three laboratory stocking densities
author López, Cristiane Machado
author_facet López, Cristiane Machado
Sampaio, Edson Vieira
author_role author
author2 Sampaio, Edson Vieira
author2_role author
dc.contributor.author.fl_str_mv López, Cristiane Machado
Sampaio, Edson Vieira
dc.subject.por.fl_str_mv pacamã
larvicultura
densidade de estocagem
sobrevivência
alimentação
2.00.00.00-6 Ciências Biológicas
topic pacamã
larvicultura
densidade de estocagem
sobrevivência
alimentação
2.00.00.00-6 Ciências Biológicas
description The aim of this study was to evaluate the effect of three stocking densities on survival and growth of larval pacamã. The experiment was carried out in 12 flow-through systems of 0.43m2, with three distinct densities and four replicates each: 150 larvae/system (treatment 01), 250 larvae/system (treatment 02), and 500 larvae/system (treatment 03).The larvae were fed with zooplankton, enumerated and measured for length. With regard to survival pecentage, the treatments gave the following results: 01 - 60%, 02 - 49% and 03 - 37%. Wilcoxon’s Rank Sum Test showed a statistical difference between treatments 01 and 03 (P < 0.05). No such difference was found with regard to larval length, or physical and chemical features of water between the treatments. The results indicate a negative relationship between stocking density and larvae survival rate
publishDate 2008
dc.date.none.fl_str_mv 2008-05-09
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/2934
10.4025/actascibiolsci.v22i0.2934
url http://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/2934
identifier_str_mv 10.4025/actascibiolsci.v22i0.2934
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv http://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/2934/2119
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 22 (2000); 491-494
Acta Scientiarum. Biological Sciences; v. 22 (2000); 491-494
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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