Steroids accumulate in the rearing water of commercial recirculating aquaculture systems
Autor(a) principal: | |
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Data de Publicação: | 2014 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10400.1/4980 |
Resumo: | Little information is available on steroid concentrations in the rearing water of aquaculture systemsand whether they accumulate in recirculating aquaculture systems (RAS). Therefore this study aimedat determining (1) the concentrations and variation of cortisol and sex steroids in RAS, (2) the con-tribution of fish rearing conditions to steroid concentrations in seven commercial RAS. Each RAS wassampled twice at three different points: (1) make-up water; (2) influent and (3) effluent of the rear-ing unit. The results showed significant higher steroid concentrations in the influent and effluent whencompared with the make-up water. On average cortisol concentration was 15.7% higher in the efflu-ent when compared with the influent. Mean steroid concentrations in the rearing unit effluent variedbetween: 3.8–217.0 ng/L for cortisol, 3–12.5 ng/L for testosterone, 0.9–7.1 ng/L for 11-ketoteststerone and1.8–12.8 ng/L for 17,20 -dihydroxypregn-4-en-3-one. Stocking density, Total Ammonia-Nitrogen con-centration and orthophosphate-P concentration (a measure of make-up water usage) showed a positivecorrelation with sex steroids in the water. The steroid concentrations from the present study were ordersof magnitude lower than initial estimations indicating a water treatment efficiency of >99%. The resultssuggest that an intensification of fish production through decrease of make-up water use and increaseof stocking density will lead to a build-up of steroids in the water. Although intensification is critical forthe economical success of RAS, this ultimately could affect fish performance as steroids accumulates inthe water of RAS at levels that can potentially be detected by some fish species. |
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Steroids accumulate in the rearing water of commercial recirculating aquaculture systemsSteroids in waterFishCortisolTestosterone11-Ketotestosterone17,20 -Dihydroxypregn-4-en-3-oneLittle information is available on steroid concentrations in the rearing water of aquaculture systemsand whether they accumulate in recirculating aquaculture systems (RAS). Therefore this study aimedat determining (1) the concentrations and variation of cortisol and sex steroids in RAS, (2) the con-tribution of fish rearing conditions to steroid concentrations in seven commercial RAS. Each RAS wassampled twice at three different points: (1) make-up water; (2) influent and (3) effluent of the rear-ing unit. The results showed significant higher steroid concentrations in the influent and effluent whencompared with the make-up water. On average cortisol concentration was 15.7% higher in the efflu-ent when compared with the influent. Mean steroid concentrations in the rearing unit effluent variedbetween: 3.8–217.0 ng/L for cortisol, 3–12.5 ng/L for testosterone, 0.9–7.1 ng/L for 11-ketoteststerone and1.8–12.8 ng/L for 17,20 -dihydroxypregn-4-en-3-one. Stocking density, Total Ammonia-Nitrogen con-centration and orthophosphate-P concentration (a measure of make-up water usage) showed a positivecorrelation with sex steroids in the water. The steroid concentrations from the present study were ordersof magnitude lower than initial estimations indicating a water treatment efficiency of >99%. The resultssuggest that an intensification of fish production through decrease of make-up water use and increaseof stocking density will lead to a build-up of steroids in the water. Although intensification is critical forthe economical success of RAS, this ultimately could affect fish performance as steroids accumulates inthe water of RAS at levels that can potentially be detected by some fish species.Institution FCT – Fundação para a Ciência e TecnologiaElsevierSapientiaMota, VascoMartins, Catarina I. M.Eding, EpCanario, Adelino V. M.Verreth, Johan2015-07-23T00:30:15Z2014-07-232014-07-23T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.1/4980engVasco C. Mota, Catarina I.M. Martins, Ep H. Eding, Adelino V.M. Canário, Johan A.J. Verreth. Steroids accumulate in the rearing water of commercial recirculating aquaculture systems, 2014, Aquaculture Engineering, 62., 9-16, http://dx.doi.org/10.1016/j.aquaeng.2014.07.0040144-8609AUT: ACA00258;http://dx.doi.org/10.1016/j.aquaeng.2014.07.004info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-07-24T10:16:10Zoai:sapientia.ualg.pt:10400.1/4980Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T19:58:10.054398Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Steroids accumulate in the rearing water of commercial recirculating aquaculture systems |
title |
Steroids accumulate in the rearing water of commercial recirculating aquaculture systems |
spellingShingle |
Steroids accumulate in the rearing water of commercial recirculating aquaculture systems Mota, Vasco Steroids in water Fish Cortisol Testosterone 11-Ketotestosterone 17,20 -Dihydroxypregn-4-en-3-one |
title_short |
Steroids accumulate in the rearing water of commercial recirculating aquaculture systems |
title_full |
Steroids accumulate in the rearing water of commercial recirculating aquaculture systems |
title_fullStr |
Steroids accumulate in the rearing water of commercial recirculating aquaculture systems |
title_full_unstemmed |
Steroids accumulate in the rearing water of commercial recirculating aquaculture systems |
title_sort |
Steroids accumulate in the rearing water of commercial recirculating aquaculture systems |
author |
Mota, Vasco |
author_facet |
Mota, Vasco Martins, Catarina I. M. Eding, Ep Canario, Adelino V. M. Verreth, Johan |
author_role |
author |
author2 |
Martins, Catarina I. M. Eding, Ep Canario, Adelino V. M. Verreth, Johan |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
Sapientia |
dc.contributor.author.fl_str_mv |
Mota, Vasco Martins, Catarina I. M. Eding, Ep Canario, Adelino V. M. Verreth, Johan |
dc.subject.por.fl_str_mv |
Steroids in water Fish Cortisol Testosterone 11-Ketotestosterone 17,20 -Dihydroxypregn-4-en-3-one |
topic |
Steroids in water Fish Cortisol Testosterone 11-Ketotestosterone 17,20 -Dihydroxypregn-4-en-3-one |
description |
Little information is available on steroid concentrations in the rearing water of aquaculture systemsand whether they accumulate in recirculating aquaculture systems (RAS). Therefore this study aimedat determining (1) the concentrations and variation of cortisol and sex steroids in RAS, (2) the con-tribution of fish rearing conditions to steroid concentrations in seven commercial RAS. Each RAS wassampled twice at three different points: (1) make-up water; (2) influent and (3) effluent of the rear-ing unit. The results showed significant higher steroid concentrations in the influent and effluent whencompared with the make-up water. On average cortisol concentration was 15.7% higher in the efflu-ent when compared with the influent. Mean steroid concentrations in the rearing unit effluent variedbetween: 3.8–217.0 ng/L for cortisol, 3–12.5 ng/L for testosterone, 0.9–7.1 ng/L for 11-ketoteststerone and1.8–12.8 ng/L for 17,20 -dihydroxypregn-4-en-3-one. Stocking density, Total Ammonia-Nitrogen con-centration and orthophosphate-P concentration (a measure of make-up water usage) showed a positivecorrelation with sex steroids in the water. The steroid concentrations from the present study were ordersof magnitude lower than initial estimations indicating a water treatment efficiency of >99%. The resultssuggest that an intensification of fish production through decrease of make-up water use and increaseof stocking density will lead to a build-up of steroids in the water. Although intensification is critical forthe economical success of RAS, this ultimately could affect fish performance as steroids accumulates inthe water of RAS at levels that can potentially be detected by some fish species. |
publishDate |
2014 |
dc.date.none.fl_str_mv |
2014-07-23 2014-07-23T00:00:00Z 2015-07-23T00:30:15Z |
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://hdl.handle.net/10400.1/4980 |
url |
http://hdl.handle.net/10400.1/4980 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Vasco C. Mota, Catarina I.M. Martins, Ep H. Eding, Adelino V.M. Canário, Johan A.J. Verreth. Steroids accumulate in the rearing water of commercial recirculating aquaculture systems, 2014, Aquaculture Engineering, 62., 9-16, http://dx.doi.org/10.1016/j.aquaeng.2014.07.004 0144-8609 AUT: ACA00258; http://dx.doi.org/10.1016/j.aquaeng.2014.07.004 |
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 |
Elsevier |
publisher.none.fl_str_mv |
Elsevier |
dc.source.none.fl_str_mv |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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RCAAP |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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