Pollutant bioaccumulation in sentinel fish chronically exposed in Iguaçu river reservoirs (Southern Brazil) and human health risk of fish consumption.

Autor: Rubio-Vargas DA; Laboratório de Toxicologia Celular, Departamento de Biologia Celular, Universidade Federal Do Paraná, CEP 81531-980, Curitiba, Paraná, Brazil., Morais TP; Laboratório de Toxicologia Celular, Departamento de Biologia Celular, Universidade Federal Do Paraná, CEP 81531-980, Curitiba, Paraná, Brazil., Randi MAF; Laboratório de Toxicologia Celular, Departamento de Biologia Celular, Universidade Federal Do Paraná, CEP 81531-980, Curitiba, Paraná, Brazil., Filipak Neto F; Laboratório de Toxicologia Celular, Departamento de Biologia Celular, Universidade Federal Do Paraná, CEP 81531-980, Curitiba, Paraná, Brazil., Martins CC; Instituto Oceanográfico, Universidade de São Paulo, Praça Do Oceanográfico, 191, São Paulo, SP, 05508-120, Brazil., Oliveira AP; Departamento de Química, Universidade Federal Do Paraná, CEP 81531-980, Curitiba, Paraná, Brazil., Nazário MG; Laboratório de Análises Ambientais, Setor Litoral, Universidade Federal Do Paraná, CEP 83260-000, Matinhos, Paraná, Brazil., Ferreira FCADS; Copel GeT-SOS/DNGT - Rua José Izidoro Biazetto, N(o). 18. Bloco A, CEP 81200-240, Curitiba, PR, Brazil., Opuskevitch I; Copel GeT-SOS/DNGT - Rua José Izidoro Biazetto, N(o). 18. Bloco A, CEP 81200-240, Curitiba, PR, Brazil., Penner D; Copel GeT-SOS/DNGT - Rua José Izidoro Biazetto, N(o). 18. Bloco A, CEP 81200-240, Curitiba, PR, Brazil., Esquivel-Muelbert J; Estação de Piscicultura Panamá, Est. Geral Bom Retiro, CEP 88490-000, Paulo Lopes, Santa Catarina, Brazil; School of Natural Sciences, Macquarie University, NSW, 2109, Australia., Prodocimo MM; Laboratório de Toxicologia Celular, Departamento de Biologia Celular, Universidade Federal Do Paraná, CEP 81531-980, Curitiba, Paraná, Brazil., Choueri RB; Universidade Federal de São Paulo, Instituto Do Mar, Departamento de Ciências Do Mar, MarineTox_Lab, Rua Maria Máximo 168, CEP 11030-100, Santos, São Paulo, Brazil., Oliveira Ribeiro CA; Laboratório de Toxicologia Celular, Departamento de Biologia Celular, Universidade Federal Do Paraná, CEP 81531-980, Curitiba, Paraná, Brazil. Electronic address: ciro@ufpr.br.
Jazyk: angličtina
Zdroj: Chemosphere [Chemosphere] 2024 Feb; Vol. 349, pp. 140812. Date of Electronic Publication: 2023 Nov 28.
DOI: 10.1016/j.chemosphere.2023.140812
Abstrakt: Bioaccumulation studies in fish mark the initial phase of assessing the risk of chemical exposure to biota and human populations. The Iguaçu River boasting a diverse endemic ichthyofauna, is grappling with the repercussions of human activities. This study delved into the bioaccumulation of micropollutants, the early-warning effects on Rhamdia quelen and Oreochomis niloticus in the Segredo Reservoir (HRS) and the potential risk of human exposure. Two groups of caged fish in three sites of the reservoir were exposed during the autumn-winter and spring-summer, while a third group (O. niloticus) underwent a twelve-month exposure, and inorganic and organic chemicals analysis in water, sediment, and biota. Additionally, metallothionein expression and genotoxicity were employed as biomarkers. PAHs, PCBs, Al, Cu, Fe, and As in water and DDTs, Cu, Zn, and As in sediment surpassed the thresholds set by Brazilian regulations, where DDT exhibited bioaccumulation in muscle, alongside metals in liver, kidney, gills, and muscle tissues. R. quelen showed metallothionein expression whereas DNA damage and NMA frequencies were elevated in target organs and in brain and erythrocytes of O. niloticus during summer. In this species the DNA damage in liver was remarkable after twelve months. Target Hazard Quotients and Cancer Risk values shedding light on the vulnerability of both children and adults. The reservoir's conditions led to heightened sensitivity to micropollutants for R. quelen species. The data presented herein provides decision-makers with pertinent insights to facilitate effective management and conservation initiatives within the Iguaçu Basin.
Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2023 Elsevier Ltd. All rights reserved.)
Databáze: MEDLINE
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