Spatial-temporal dynamics of Cr in fish from Puruzinho Lake (Western Amazon) and dietary risk assessment

Bioaccumulation of metals and genotoxic effects in females of Colomesus asellus collected in an Amazon River estuary, Amapá, Brazil

“…Thus, Amazonian fish species are increasingly vulnerable to the exposure of different types of pollutants, especially toxic metals. Increased release of toxic metals in water bodies is mainly related to the expansion of agricultural and livestock areas, installation of hydroelectric plants, and mineral extraction (Viana et al, 2020, Araújo-Flores et al, 2021, Souza-Araujo et al, 2022, Nascimento et al, 2022. In addition, many agrochemicals have toxic metals in their composition, either as components or as contaminants, and these toxic residues do reach water resources (Ribeiro et al, 2017).…”

“…In addition, many agrochemicals have toxic metals in their composition, either as components or as contaminants, and these toxic residues do reach water resources (Ribeiro et al, 2017). Such exposure is known to alter physiological and biochemical functions that affect growth and reproduction (Jezierska et al, 2009, El-Shenawy et al, 2021 which calls for the urgent implementation of conservation strategies to preserve native and endemic species of Amazonian fish (Araújo-Flores et al, 2021, Nascimento et al, 2022. However, studies reporting on the impact of metals on freshwater fish species endemic to the Neotropics are still relatively scarce (Paschoalini & Bazzoli, 2021).…”