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

被引：0

作者：

Rubio-Vargas D.A. ^{[1
]}

Morais T.P.D. ^{[1
]}

Randi M.A.F. ^{[1
]}

Filipak Neto F. ^{[1
]}

Martins C.D.C. ^{[8
]}

Oliveira A.P. ^{[2
]}

Nazário M.G. ^{[3
]}

Ferreira F.C.A.D.S. ^{[4
]}

Opuskevitch I. ^{[4
]}

Penner D. ^{[4
]}

Esquivel-Muelbert J. ^{[5
,6
]}

Prodocimo M.M. ^{[1
]}

Choueri R.B. ^{[7
]}

Oliveira Ribeiro C.A.D. ^{[1
]}

机构：

[1] Laboratório de Toxicologia Celular, Departamento de Biologia Celular, Universidade Federal Do Paraná, Paraná, Curitiba

[2] Departamento de Química, Universidade Federal Do Paraná, Paraná, Curitiba

[3] Laboratório de Análises Ambientais, Universidade Federal Do Paraná, Setor Litoral, Paraná, Matinhos

[4] Copel GeT-SOS/DNGT – Rua José Izidoro Biazetto, . 18. Bloco A, PR, Curitiba

[5] Estação de Piscicultura Panamá, Est. Geral Bom Retiro, Santa Catarina, Paulo Lopes

[6] School of Natural Sciences, Macquarie University, 2109, NSW

[7] Universidade Federal de São Paulo, Instituto Do Mar, Departamento de Ciências Do Mar, MarineTox_Lab, Rua Maria Máximo 168, Santos, São Paulo

[8] Instituto Oceanográfico, Universidade de São Paulo, Praça Do Oceanográfico, 191, SP, São Paulo

来源：

Chemosphere | 2024年 / 349卷

关键词：

Biomarkers; Food safety; Freshwater fish; Genotoxicity; Sentinel fish;

D O I：

10.1016/j.chemosphere.2023.140812

中图分类号：

学科分类号：

摘要：

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. © 2023 Elsevier Ltd

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