Landscape composition and inorganic contaminants in water and muscle tissue of Plagioscion squamosissimus in the Araguari River (Amazon, Brazil).

Autor: da Silva Costa M; Programa de Pós-Graduação em Ciências Ambientais (PPGCA/UNIFAP), Universidade Federal Do Amapá, Rod. Juscelino Kubitschek, Km 02 - Jardim Marco Zero, 68903-419, Macapá, AP, Brazil; Laboratório de Ictio e Genotoxidade, Universidade Federal do Amapá (UNIFAP), Rod. Juscelino Kubitschek, Km 02 - Jardim Marco Zero, 68903-419, Macapá, AP, Brazil., Viana LF; Programa de Pós-Graduação em Ciência e Tecnologia Ambiental (CTA) Universidade Federal da Grande Dourados (UFGD), Rod. Dourados Itahum Km 12, Dourados, MS, Caixa, Postal: 79804-970, Brazil. Electronic address: lucilenefinoto@hotmail.com., Lima Cardoso CA; Programa de Pós-Graduação em Recursos Naturais (PPGRN/UEMS), Universidade Estadual de Mato Grosso Do Sul, Rod. Dourados Itahum Km 12, Dourados, MS, 79804-970, Brazil. Electronic address: claudia@uems.br., Gonar Silva Isacksson ED; Laboratório de Ictio e Genotoxidade, Universidade Federal do Amapá (UNIFAP), Rod. Juscelino Kubitschek, Km 02 - Jardim Marco Zero, 68903-419, Macapá, AP, Brazil., Silva JC; Laboratório de Ictio e Genotoxidade, Universidade Federal do Amapá (UNIFAP), Rod. Juscelino Kubitschek, Km 02 - Jardim Marco Zero, 68903-419, Macapá, AP, Brazil., Florentino AC; Programa de Pós-Graduação em Ciências Ambientais (PPGCA/UNIFAP), Universidade Federal Do Amapá, Rod. Juscelino Kubitschek, Km 02 - Jardim Marco Zero, 68903-419, Macapá, AP, Brazil; Laboratório de Ictio e Genotoxidade, Universidade Federal do Amapá (UNIFAP), Rod. Juscelino Kubitschek, Km 02 - Jardim Marco Zero, 68903-419, Macapá, AP, Brazil. Electronic address: alexandrocezar@unifap.br.
Jazyk: angličtina
Zdroj: Environmental research [Environ Res] 2022 May 15; Vol. 208, pp. 112691. Date of Electronic Publication: 2022 Jan 10.
DOI: 10.1016/j.envres.2022.112691
Abstrakt: Amazonian aquatic environments are seriously impacted by dam-building and deforestation, among other threats. Therefore, the present study aimed to examine water quality in the middle and lower course of the Araguari River with respect to the composition of vegetative cover and the concentration of As, Cd and Hg in order to determine risks to the preservation of biota and risks to human health from consumption of P. squamosissimus contaminated with these inorganic elements. To accomplish this, water samples and fish specimens were collected in the middle and lower Araguari River in 2019. The concentration of inorganic contaminants was analyzed by atomic absorption spectrophotometry. These stretches of the Araguari River presented higher proportions of forest fragments and evident expansion of buffalo pastures. According to Brazilian legislation, the concentrations of Cd and Hg in the water samples represented risk quotient values > 1, indicating risk to the preservation of aquatic biota. In particular, the concentrations of Cd in the muscle tissue of P. squamosissimus in the lower Araguari River also indicated risks to human health. The bioaccumulation factor indicated that Hg is bioavailable in the water. It can be concluded that water imbalances in the middle and lower Araguari River compromise the health of both aquatic and human life.
(Copyright © 2022 Elsevier Inc. All rights reserved.)
Databáze: MEDLINE
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