Mercury distribution in organs of fish species and the associated risk in traditional subsistence villagers of the Pantanal wetland

Environmental Geochemistry and Health
Ana P S CeccattoSergi Díez

Abstract

This study evaluated the risk to human health from mercury (Hg) exposure through fish consumption in the Pantanal, Brazil. In order to address these risks, Hg concentrations and accumulation patterns were determined in target organs of predatory fish (Crenicichla lepidota and Pygocentrus nattereri). Levels of Hg were analysed during the two phases of the flood pulse (flood and drought) in fish from different local ecosystems, such as the Bento Gomes and Paraguay rivers. Although the former study area is directly affected by gold mining, a higher, but not significantly different, Hg concentration in fish was found compared with fish at the Paraguay River, which is regarded as pristine area. Moreover, no seasonal variability was found in either river. Although total mercury levels in fish did not exceed the maximum FAO/WHO threshold (0.5 μg g(-1)), according to dietary habits in riverine communities of the Pantanal (up to 6 oz of fish per day), there is reason for concern over the potential for deleterious health effects that could be caused by high Hg intake. In fact, the estimated daily intake in the present study ranged from 0.49 to 1.08 μg Hg kg(-1) day(-1), for adults (including women of childbearing age) and children, respe...Continue Reading

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Citations

Oct 12, 2016·Nihon eiseigaku zasshi. Japanese journal of hygiene·Kanae KaritaKatsuyuki Murata
Aug 23, 2017·Biological Trace Element Research·José Cavalcante Souza VieiraPedro de Magalhães Padilha
Aug 18, 2017·Environmental Science and Pollution Research International·Elaine C CebalhoAurea R A Ignácio
Sep 24, 2019·Chemosphere·William Pietro-SouzaMarcos Antônio Soares

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