Sistema de criação de rã-touro (Lithobates catesbeianus): Qualidade da água e mudanças ambientais

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dc.contributor.authorMercante, Cacilda Thais Janson
dc.contributor.authorVaz-dos-Santos, André Martins
dc.contributor.authorMoraes, Munique de Almeida Bispo
dc.contributor.authorPereira, Jeniffer Sati [UNESP]
dc.contributor.authorLombardi, Júlio Vicente
dc.contributor.institutionCentro de Pesquisa e Desenvolvimento Especializado em Recursos Hídricos, Instituto de Pesca
dc.contributor.institutionUniversidade Federal do Paraná (UFPR)
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2018-12-11T16:37:42Z
dc.date.available2018-12-11T16:37:42Z
dc.date.issued2014-01-01
dc.description.abstractIntroduction: Frog farming, if not well managed, may cause environmental damages. The use of antibiotics, the organic discharge and the introduction of exotic species can disseminate risks such as eutrophication, changes in the water quality and organic pollution, factors that affect the human consumption. Aim: Evaluating the water quality of a bullfrog farming system, discussing their relations to production and the environment based on the current legislation. Methods: Sampling was performed on a monthly basis from November 2006 to March 2007 during growth and fattening phases of bullfrog (Lithobates catesbeianus). Sample sites were distributed according to the water flow: upstream from the mixing zone, affluent (supply water), bay, effluent, mixing zone and downstream from the mixing zone. In the field, pH, electrical conductivity, dissolved oxygen, temperature and turbidity were measured. In laboratory, nitrogen, phosphorus and chlorophyll a concentrations were analyzed. Results: The concentration of nutrients was determiner for water quality in the bay and its effluent. According to the current legislation, the effluent exceeded the limits for total phosphorus (> 0.030 mg L-1) and total nitrogen (> 1.27 mg L-1). Other variables presented acceptable values in light of the current laws. Conclusion: The high values of nutrients and other factors such as conductivity and turbidity are proportional to the animal growth due to the inadequate management practices evidenced by feed conversion rate. The following management options are proposed: maintaining the flow and decreased density of animals; maintaining the flow and density storage with adequate control of the food supply.en
dc.description.affiliationCentro de Pesquisa e Desenvolvimento Especializado em Recursos Hídricos, Instituto de Pesca, Avenida Francisco Matarazzo, 455, CEP 05001-900, São Paulo, SP
dc.description.affiliationLaboratório de Esclerocronologia, Universidade Federal do Paraná - UFPR, Rua Pioneiro, 2153, CEP 85950-000, Palotina, PR
dc.description.affiliationUniversidade Estadual Paulista J'úlio de Mesquita Filho' - UNESP, Avenida 24 A, 1515, CEP 13506-900, Rio Claro, SP
dc.description.affiliationUnespUniversidade Estadual Paulista J'úlio de Mesquita Filho' - UNESP, Avenida 24 A, 1515, CEP 13506-900, Rio Claro, SP
dc.format.extent9-17
dc.identifierhttp://dx.doi.org/10.1590/S2179-975X2014000100003
dc.identifier.citationActa Limnologica Brasiliensia, v. 26, n. 1, p. 9-17, 2014.
dc.identifier.doi10.1590/S2179-975X2014000100003
dc.identifier.fileS2179-975X2014000100003.pdf
dc.identifier.issn0102-6712
dc.identifier.scieloS2179-975X2014000100003
dc.identifier.scopus2-s2.0-84904017205
dc.identifier.urihttp://hdl.handle.net/11449/167632
dc.language.isoeng
dc.language.isopor
dc.relation.ispartofActa Limnologica Brasiliensia
dc.relation.ispartofsjr0,280
dc.rights.accessRightsAcesso aberto
dc.sourceScopus
dc.subjectAquaculture
dc.subjectEffluent
dc.subjectManagement
dc.subjectNitrogen
dc.subjectPhosphorus
dc.titleSistema de criação de rã-touro (Lithobates catesbeianus): Qualidade da água e mudanças ambientaispt
dc.title.alternativeBullfrog (Lithobates catesbeianus) farming system: Water quality and environmental changesen
dc.typeArtigo

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