Caracterização de efluentes de viveiros de engorda de rã-touro (lithobates catesbeianus, Shaw, 1802)

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dc.contributor.authorBorges, Fernanda de Freitas [UNESP]
dc.contributor.authordo Amaral, Luiz Augusto [UNESP]
dc.contributor.authorde Stéfani, Marta Verardino [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-27T11:27:09Z
dc.date.available2014-05-27T11:27:09Z
dc.date.issued2012-11-26
dc.description.abstractAim: Current analysis characterizes the effluent from bullfrog-rearing ponds during the grow-out phase; Methods: Temperature, pH, dissolved oxygen, electric conductivity, turbidity, total phosphorus, N-NH3, N-NO3, BOD5 and COD and the number of thermotolerant coliforms (Escherichia coli) of the inlet and outlet water of the ponds were analyzed twice a week. Assay consisted of a completely randomized experimental design with two treatments (inlet and outlet water) and six repetitions in a split-plot, coupled to collection over time as subplot; Results: All variables were significantly different (p < 0.05) between treatments and over time (p < 0.05). Average rates of temperature, pH and dissolved oxygen levels of the supply water were higher when compared to those of the effluent. The other variables such as conductivity, turbidity, total phosphorus, ammonia, nitrate, biological oxygen demand, chemical oxygen demand and E. coli were higher in the effluent when compared to rates in the supply water; Conclusions: The management during grow-out phase caused the deterioration of the water quality, with increasing levels of dissolved nutrients and the number of thermotolerant coliform. Ammonia and phosphorus levels in the effluent, caused by waste food, skin and feces, accelerate the eutrophication process of the receiving water body. Further studies on effluent treatment are required.en
dc.description.affiliationCentro de Aquicultura da UNESP - CAUNESP Universidade Estadual Paulista Júlio de Mesquita Filho - UNESP, Via de Acesso Professor Paulo Donato Castellane, s/n, CEP 14884-900, Jaboticabal
dc.description.affiliationUnespCentro de Aquicultura da UNESP - CAUNESP Universidade Estadual Paulista Júlio de Mesquita Filho - UNESP, Via de Acesso Professor Paulo Donato Castellane, s/n, CEP 14884-900, Jaboticabal
dc.format.extent160-166
dc.identifierhttp://dx.doi.org/10.1590/S2179-975X2012005000035
dc.identifier.citationActa Limnologica Brasiliensia, v. 24, n. 2, p. 160-166, 2012.
dc.identifier.doi10.1590/S2179-975X2012005000035
dc.identifier.file2-s2.0-84869461538.pdf
dc.identifier.issn0102-6712
dc.identifier.scieloS2179-975X2012005000035
dc.identifier.scopus2-s2.0-84869461538
dc.identifier.urihttp://hdl.handle.net/11449/73753
dc.language.isoeng
dc.language.isopor
dc.relation.ispartofActa Limnologica Brasiliensia
dc.relation.ispartofsjr0,280
dc.rights.accessRightsAcesso aberto
dc.sourceScopus
dc.subjectEutrophicationen
dc.subjectNutrientsen
dc.subjectRanicultureen
dc.subjectWater qualityen
dc.subjectEscherichia colien
dc.subjectLithobatesen
dc.subjectRana catesbeianaen
dc.titleCaracterização de efluentes de viveiros de engorda de rã-touro (lithobates catesbeianus, Shaw, 1802)pt
dc.title.alternativeCharacterization of effluents from bullfrog (Lithobates catesbeianus, Shaw, 1802) grow-out pondsen
dc.typeArtigo
dcterms.licensehttp://www.scielo.br/revistas/alb/iaboutj.htm

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