Metals, arsenic, pesticides, and microcystins in tilapia (Oreochromis niloticus) from aquaculture parks in Brazil

Autor(es)

Miranda Lopes, Taciana Onesorge ; Passos, Larissa Souza ; Vieira, Luiza Valli ; Pinto, Ernani ; Dorr, Fabiane ; Scherer, Rodrigo ; Salustriano, Nathacha de Andrade ; Weitzel Dias Carneiro, Maria Tereza ; Postay, Lais Frigini ; Gomes, Levy Carvalho

• Tipo de documento: Artigo Científico
• Fonte: Environmental Science and Pollution Research; v. 27, n. 16, p. 14-pg., 2020-04-01.

Resumo

The production of Nile tilapia (Oreochromis niloticus) in Brazil exhibits the highest growth rate in the world and represents approximately 45% of the total fish production. The objective of the present study was to assess the risk for human health due the consumption of tilapia farmed in net cages in eight aquaculture parks in Brazil. The concentrations of pesticides (40 compounds), metals (Mn, Ni, Zn, Cd, Pb, and Sn), arsenic, and cyanotoxins (microcystins) were evaluated in 16 fish from each park. Among analyzed pesticides, pyraclostrobin (0.18-0.32 mg/kg) and fenthion (0.0026-0.0037 mg/kg) exhibited values above the limit of quantification in the tilapia from Aracoiaba, Castanhao, and Ilha Solteira. The highest concentrations of As (0.44 mu g/g) in fish tissues were found in Juara, Mn (0.21 mu g/g) in Castanhao, and Zi (11.5 mu g/g) were found in Tres Marias. Furnas and Linhares exhibited the lowest metal concentrations. The estimated daily intake of muscle by the average Brazilian with 70 kg body weight is below the reference dose for all studied metals in all parks. Total free microcystins showed an accumulation pattern (muscle < gill < liver). The highest concentration in muscle was found in Castanhao (1043 mu g/kg) samples. The results showed that fish exhibited metal, As, and pesticide tolerable daily intake (TDI) below the limit and pose low risk for human consumption. Otherwise, TDI for microcystins in fish of all studied parks was above the maximum level recommended by the World Health Organization, indicating that there exists a toxicity risk of fish consumption. (AU)

• Processo FAPESP: 14/50420-9 - Metabólitos secundários produzidos por micro-organismos aquáticos e impacto na qualidade de frutos do mar e de peixes de água doce
• Beneficiário: Ernani Pinto Junior
• Modalidade de apoio: Auxílio à Pesquisa - Regular