Limnologia de um sistema integrado tanques-rede e viveiro em fazenda de aquicultura
Autor(a) principal: | |
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Data de Publicação: | 2016 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1590/S2179-975X3014 http://hdl.handle.net/11449/174221 |
Resumo: | Aim: Examining whether small-scale tilapia cages have a potential influence on water abiotic parameters in a pond of a flow-through system. Methods: Tilapia cages were installed near the pond water outlet. Samples for determination of abiotic parameters were monthly collected during eight months at five sampling sites: near three inlets receiving effluents from other fishponds (IW12, IW6 and IWM, the latter opening in a macrophyte bed), close to the cages in the open-pond (CC) and close to the water outlet (WO). The data were analyzed using Principal Component Analysis (PCA). Results: The first PCA axis (70% of the data variability) was related to eutrophication and the second axis (20%) to the dependence of nitrifying bacteria on substrate availability. The sampling sites IW12, CC and WO showed high eutrophication levels. The lowest total phosphorus content, total suspended solids, hardness, alkalinity and conductivity and the highest dissolved oxygen were observed in the macrophyte bed area (IWM). Fish cages significantly increased total phosphorus content, conductivity, alkalinity and hardness in relation to the macrophyte bed inlet. Water outlet abiotic parameters were similar to near cage water. Conclusion: The integrated cage-pond technology may be utilized in flow-through systems if incoming water quality (mainly in the site W12) is improved. Cages should be positioned closer to the pond center where it is deeper allowing higher flow-through and dispersion of uneaten feed residues and feces from the cages. This would avoid their deposition beneath cages and reduce their negatives influence on water quality entering the next fishpond (WO), and therefore not impair fish performance. |
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Limnologia de um sistema integrado tanques-rede e viveiro em fazenda de aquiculturaLimnology of an integrated cage-pond aquaculture farmCage cultureIntegrated cultureLimnological parametersNile tilapiaAim: Examining whether small-scale tilapia cages have a potential influence on water abiotic parameters in a pond of a flow-through system. Methods: Tilapia cages were installed near the pond water outlet. Samples for determination of abiotic parameters were monthly collected during eight months at five sampling sites: near three inlets receiving effluents from other fishponds (IW12, IW6 and IWM, the latter opening in a macrophyte bed), close to the cages in the open-pond (CC) and close to the water outlet (WO). The data were analyzed using Principal Component Analysis (PCA). Results: The first PCA axis (70% of the data variability) was related to eutrophication and the second axis (20%) to the dependence of nitrifying bacteria on substrate availability. The sampling sites IW12, CC and WO showed high eutrophication levels. The lowest total phosphorus content, total suspended solids, hardness, alkalinity and conductivity and the highest dissolved oxygen were observed in the macrophyte bed area (IWM). Fish cages significantly increased total phosphorus content, conductivity, alkalinity and hardness in relation to the macrophyte bed inlet. Water outlet abiotic parameters were similar to near cage water. Conclusion: The integrated cage-pond technology may be utilized in flow-through systems if incoming water quality (mainly in the site W12) is improved. Cages should be positioned closer to the pond center where it is deeper allowing higher flow-through and dispersion of uneaten feed residues and feces from the cages. This would avoid their deposition beneath cages and reduce their negatives influence on water quality entering the next fishpond (WO), and therefore not impair fish performance.Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Laboratório de Limnologia e Produção de Plâncton Centro de Aquicultura Universidade Estadual Paulista – UNESPDepartamento de Ciências Exatas e da Terra Universidade do Estado de Minas Gerais – UEMGAgricultural Research Organization Fish and Aquaculture Research Station Dor, M.P. Hof HaCarmelLaboratório de Limnologia e Produção de Plâncton Centro de Aquicultura Universidade Estadual Paulista – UNESPUniversidade Estadual Paulista (Unesp)Universidade Estadual de Maringá (UEM)Fish and Aquaculture Research Station DorSipaúba-Tavares, Lúcia Helena [UNESP]Millan, Rodrigo NeyMilstein, Ana2018-12-11T17:09:54Z2018-12-11T17:09:54Z2016-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://dx.doi.org/10.1590/S2179-975X3014Acta Limnologica Brasiliensia, v. 28.0102-6712http://hdl.handle.net/11449/17422110.1590/S2179-975X3014S2179-975X20160001003012-s2.0-85012905200S2179-975X2016000100301.pdfScopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengActa Limnologica Brasiliensia0,280info:eu-repo/semantics/openAccess2024-04-09T15:43:35Zoai:repositorio.unesp.br:11449/174221Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T23:05:57.021927Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Limnologia de um sistema integrado tanques-rede e viveiro em fazenda de aquicultura Limnology of an integrated cage-pond aquaculture farm |
title |
Limnologia de um sistema integrado tanques-rede e viveiro em fazenda de aquicultura |
spellingShingle |
Limnologia de um sistema integrado tanques-rede e viveiro em fazenda de aquicultura Sipaúba-Tavares, Lúcia Helena [UNESP] Cage culture Integrated culture Limnological parameters Nile tilapia |
title_short |
Limnologia de um sistema integrado tanques-rede e viveiro em fazenda de aquicultura |
title_full |
Limnologia de um sistema integrado tanques-rede e viveiro em fazenda de aquicultura |
title_fullStr |
Limnologia de um sistema integrado tanques-rede e viveiro em fazenda de aquicultura |
title_full_unstemmed |
Limnologia de um sistema integrado tanques-rede e viveiro em fazenda de aquicultura |
title_sort |
Limnologia de um sistema integrado tanques-rede e viveiro em fazenda de aquicultura |
author |
Sipaúba-Tavares, Lúcia Helena [UNESP] |
author_facet |
Sipaúba-Tavares, Lúcia Helena [UNESP] Millan, Rodrigo Ney Milstein, Ana |
author_role |
author |
author2 |
Millan, Rodrigo Ney Milstein, Ana |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) Universidade Estadual de Maringá (UEM) Fish and Aquaculture Research Station Dor |
dc.contributor.author.fl_str_mv |
Sipaúba-Tavares, Lúcia Helena [UNESP] Millan, Rodrigo Ney Milstein, Ana |
dc.subject.por.fl_str_mv |
Cage culture Integrated culture Limnological parameters Nile tilapia |
topic |
Cage culture Integrated culture Limnological parameters Nile tilapia |
description |
Aim: Examining whether small-scale tilapia cages have a potential influence on water abiotic parameters in a pond of a flow-through system. Methods: Tilapia cages were installed near the pond water outlet. Samples for determination of abiotic parameters were monthly collected during eight months at five sampling sites: near three inlets receiving effluents from other fishponds (IW12, IW6 and IWM, the latter opening in a macrophyte bed), close to the cages in the open-pond (CC) and close to the water outlet (WO). The data were analyzed using Principal Component Analysis (PCA). Results: The first PCA axis (70% of the data variability) was related to eutrophication and the second axis (20%) to the dependence of nitrifying bacteria on substrate availability. The sampling sites IW12, CC and WO showed high eutrophication levels. The lowest total phosphorus content, total suspended solids, hardness, alkalinity and conductivity and the highest dissolved oxygen were observed in the macrophyte bed area (IWM). Fish cages significantly increased total phosphorus content, conductivity, alkalinity and hardness in relation to the macrophyte bed inlet. Water outlet abiotic parameters were similar to near cage water. Conclusion: The integrated cage-pond technology may be utilized in flow-through systems if incoming water quality (mainly in the site W12) is improved. Cages should be positioned closer to the pond center where it is deeper allowing higher flow-through and dispersion of uneaten feed residues and feces from the cages. This would avoid their deposition beneath cages and reduce their negatives influence on water quality entering the next fishpond (WO), and therefore not impair fish performance. |
publishDate |
2016 |
dc.date.none.fl_str_mv |
2016-01-01 2018-12-11T17:09:54Z 2018-12-11T17:09:54Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1590/S2179-975X3014 Acta Limnologica Brasiliensia, v. 28. 0102-6712 http://hdl.handle.net/11449/174221 10.1590/S2179-975X3014 S2179-975X2016000100301 2-s2.0-85012905200 S2179-975X2016000100301.pdf |
url |
http://dx.doi.org/10.1590/S2179-975X3014 http://hdl.handle.net/11449/174221 |
identifier_str_mv |
Acta Limnologica Brasiliensia, v. 28. 0102-6712 10.1590/S2179-975X3014 S2179-975X2016000100301 2-s2.0-85012905200 S2179-975X2016000100301.pdf |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Acta Limnologica Brasiliensia 0,280 |
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.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1808129490076827648 |