ArticleEnvironmental monitoring and assessment2026
Mercury in southern legal Amazonia: evaluating Prochilodus nigricans (Agassiz, 1829) as a bioindicator species and the risk of its consumption.
Article in Environmental monitoring and assessment, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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6 authors.
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Abstract
Mercury (Hg), a highly toxic metal, continues to be widely used in artisanal and small-scale gold mining (ASGM), particularly in the Amazon region. Its improper use and disposal contribute to the contamination of aquatic ecosystems, impacting fish and the human populations that rely on them for food. This study evaluated mercury contamination, measuring total mercury (THg) in the Peixoto de Azevedo River Basin, located in the southern Brazilian Legal Amazon, by analyzing scale, skin, muscle, and liver tissues of Prochilodus nigricans, a key species in the local diet. Mercury was detected in all tissues and across all river stretches, with higher levels observed near mining sites, suggesting the association between ASGM and environmental contamination. The liver showed the highest THg levels (1.581 mg kg⁻
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