Nitrate acute toxicity to post larvae and juveniles of Macrobrachium amazonicum (Heller, 1862)

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Autor(es): dc.contributorUniversidade Federal do Paraná (UFPR)-
Autor(es): dc.contributorEmpresa LAQUA – Camarões-
Autor(es): dc.contributorUniversidade Estadual Paulista (Unesp)-
Autor(es): dc.creatorDutra, Fabrício Martins-
Autor(es): dc.creatorCidemar Alab, Jorge Henrique-
Autor(es): dc.creatorCosta Gomes, Maria Kelviane-
Autor(es): dc.creatorFurtado, Plínio Schmidt-
Autor(es): dc.creatorValenti, Wagner C. [UNESP]-
Autor(es): dc.creatorCupertino Ballester, Eduardo Luis-
Data de aceite: dc.date.accessioned2022-02-22T00:27:52Z-
Data de disponibilização: dc.date.available2022-02-22T00:27:52Z-
Data de envio: dc.date.issued2020-12-11-
Data de envio: dc.date.issued2020-12-11-
Data de envio: dc.date.issued2020-03-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1016/j.chemosphere.2019.125229-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/199621-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/199621-
Descrição: dc.descriptionThe objective was to determine the median lethal concentration (LC50) of nitrate for post-larvae and juveniles of Macrobrachium amazonicum exposed for 96 h, and to identify histopathological alterations in the gills of juveniles exposed to nitrate. Post-larvae and juveniles of M. amazonicum were exposed to seven different concentrations of nitrate (0, 50, 100, 500, 1000, 1500 and 2000 mg.L−1) with four replicates (n = 10 prawn/experimental unit). The degree of damage to the branchial structure of juveniles was evaluated using standard histological processing with hematoxylin and eosin (H&E), subjected to the Organ Index (Iorg). LC50 values at 24, 48, 72 were estimated by the Trimmed Spearman Karber Method software and were respectively 1574, 638, 237, and 194 mg.L−1 for post-larvae and 1070, 286, 185 and 155 mg.L−1 for juveniles, respectively. From these results, the safety level of nitrate was estimated at 157, 64, 24 and 19 mg.L−1 for post-larvae and 107; 27; 18 and 16 mg.L−1 for juveniles, respectively for 24 h, 48 h, 72 h and 96 h. Damage to the gills in treatments with 100% mortality for nitrate corresponded to the high occurrence of progressive, regressive, circulatory and inflammatory damages. The other treatments, which caused lower mortality, mainly resulted in inflammation and regressive damage, whose occurrence increased with increasing concentration of nitrate. However, in closed systems, the use of anaerobic denitrifying filters or aquatic macrophytes is necessary to provide suitable water quality for the best productive performance, avoiding the negative influence of the accumulated nitrate.-
Descrição: dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)-
Descrição: dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)-
Descrição: dc.descriptionFinanciadora de Estudos e Projetos-
Descrição: dc.descriptionLaboratório de Carcinicultura Programa de Pós-graduação em Aquicultura e Desenvolvimento Sustentável Universidade Federal do Paraná, Setor Palotina-
Descrição: dc.descriptionEmpresa LAQUA – Camarões-
Descrição: dc.descriptionUNESP - Universidade Estadual Paulista Centro de Aquicultura e Agência UNESP de Inovação, São Paulo-
Descrição: dc.descriptionUNESP - Universidade Estadual Paulista Centro de Aquicultura e Agência UNESP de Inovação, São Paulo-
Idioma: dc.languageen-
Relação: dc.relationChemosphere-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectBranchial damage-
Palavras-chave: dc.subjectFreshwater prawn-
Palavras-chave: dc.subjectGill-
Palavras-chave: dc.subjectHistological changes-
Palavras-chave: dc.subjectIntensive system-
Palavras-chave: dc.subjectNitrogen compounds-
Título: dc.titleNitrate acute toxicity to post larvae and juveniles of Macrobrachium amazonicum (Heller, 1862)-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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