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1. | | LANZA, F. E.; SILVA, D. D. da; COSTA, R. V. da; COTA, L. V.; FIGUEIREDO, J. E. F.; CASELA, C. R.; SOUZA, A. G. C. Rotação de genótipos de sorgo para manejo da antracnose foliar. In: CONGRESSO NACIONAL DE MILHO E SORGO, 30.; SIMPÓSIO SOBRE LEPDÓPTEROS COMUNS A MILHO, SOJA E ALGODÃO, 1., 2014, Salvador. Eficiência nas cadeias produtivas e o abastecimento global: resumos expandidos. Sete Lagoas: Associação Brasileira de Milho e Sorgo, 2014. 1 CD-ROM. Biblioteca(s): Embrapa Milho e Sorgo. |
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Registro Completo
Biblioteca(s): |
Embrapa Pecuária Sudeste. |
Data corrente: |
26/02/2019 |
Data da última atualização: |
11/12/2019 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
A - 1 |
Autoria: |
FERREIRA, N. S.; OLIVEIRA, L. H. B.; AGRELLI, V.; OLIVEIRA, A. F. de; NOGUEIRA, A. R. de A.; OLIVEIRA, A.; GONZALEZ, M. H. |
Afiliação: |
Nathalia S. Ferreira, UNESP; Luciano H. B. Oliveira, UNESP; Vitor Agrelli, UNESP; Aline F. de Oliveira, UFSCar; ANA RITA DE ARAUJO NOGUEIRA, CPPSE; Andrea Oliveira, UFPR; Mario H. Gonzalez, UNESP. |
Título: |
Bioaccumulation and acute toxicity of As(III) and As(V) in Nile tilapia (Oreochromis niloticus). |
Ano de publicação: |
2019 |
Fonte/Imprenta: |
Chemosphere, v.217, p.349-354, 2019. |
ISSN: |
0045-6535 |
DOI: |
https://doi.org/10.1016/j.chemosphere.2018.11.013 |
Idioma: |
Inglês |
Conteúdo: |
The distribution of arsenic in the different tissues of tilapia fish is determined by the exposure time and the depuration rate. The mechanisms of toxicity/carcinogenicity depend on the arsenic species involved in the biotransformation processes. After a 7-day exposure period, the accumulation of inorganic arsenic (iAs) in the tilapia tissues studied was in the order: liver > stomach > gills > muscles. In bioaccumulation assays, the values of the organ uptake constant (ka) ranged from 0.06 to 0.51 mL g1 d1, while the depuration rate constant (kd) values were in the range 0.03e1.15 d1. Higher iAs bioaccumulation factor (BCF) values were observed for the stomach (3.1 mL g1 ) and the liver (1.6 mL g1), reflecting their high capacity to accumulate iAs species. These organs act as long-term storage sites for iAs, following chronic exposure. The LC50 values were determined considering the average iAs concentration and the cumulative fish mortality. For As(III), the LC50 values indicated fish mortality at concentrations above 30 mg L1. The fish showed greater tolerance to exposure to As(V), compared to As(III), with fish mortality after the second day of exposure requiring an As(V) concentration 7-fold higher than As(III). |
Palavras-Chave: |
Inorganic arsenic. |
Thesagro: |
Tilápia. |
Thesaurus NAL: |
Acute toxicity; Bioaccumulation. |
Categoria do assunto: |
W Química e Física |
Marc: |
LEADER 02038naa a2200265 a 4500 001 2106515 005 2019-12-11 008 2019 bl uuuu u00u1 u #d 022 $a0045-6535 024 7 $ahttps://doi.org/10.1016/j.chemosphere.2018.11.013$2DOI 100 1 $aFERREIRA, N. S. 245 $aBioaccumulation and acute toxicity of As(III) and As(V) in Nile tilapia (Oreochromis niloticus).$h[electronic resource] 260 $c2019 520 $aThe distribution of arsenic in the different tissues of tilapia fish is determined by the exposure time and the depuration rate. The mechanisms of toxicity/carcinogenicity depend on the arsenic species involved in the biotransformation processes. After a 7-day exposure period, the accumulation of inorganic arsenic (iAs) in the tilapia tissues studied was in the order: liver > stomach > gills > muscles. In bioaccumulation assays, the values of the organ uptake constant (ka) ranged from 0.06 to 0.51 mL g1 d1, while the depuration rate constant (kd) values were in the range 0.03e1.15 d1. Higher iAs bioaccumulation factor (BCF) values were observed for the stomach (3.1 mL g1 ) and the liver (1.6 mL g1), reflecting their high capacity to accumulate iAs species. These organs act as long-term storage sites for iAs, following chronic exposure. The LC50 values were determined considering the average iAs concentration and the cumulative fish mortality. For As(III), the LC50 values indicated fish mortality at concentrations above 30 mg L1. The fish showed greater tolerance to exposure to As(V), compared to As(III), with fish mortality after the second day of exposure requiring an As(V) concentration 7-fold higher than As(III). 650 $aAcute toxicity 650 $aBioaccumulation 650 $aTilápia 653 $aInorganic arsenic 700 1 $aOLIVEIRA, L. H. B. 700 1 $aAGRELLI, V. 700 1 $aOLIVEIRA, A. F. de 700 1 $aNOGUEIRA, A. R. de A. 700 1 $aOLIVEIRA, A. 700 1 $aGONZALEZ, M. H. 773 $tChemosphere$gv.217, p.349-354, 2019.
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