Mercury transport and human exposure from global marine fisheries

Abstract Human activities have increased the global circulation of mercury, a potent neurotoxin. Mercury can be converted into methylmercury, which biomagnifies along aquatic food chains and leads to high exposure in fish-eating populations. Here we quantify temporal trends in the ocean-to-land tran...

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Autores principales:	Raphael A. Lavoie, Ariane Bouffard, Roxane Maranger, Marc Amyot
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2018
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/5b00f65201bf4e2f8ba40a00dc31283e
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spelling	oai:doaj.org-article:5b00f65201bf4e2f8ba40a00dc31283e2021-12-02T11:40:46ZMercury transport and human exposure from global marine fisheries10.1038/s41598-018-24938-32045-2322https://doaj.org/article/5b00f65201bf4e2f8ba40a00dc31283e2018-04-01T00:00:00Zhttps://doi.org/10.1038/s41598-018-24938-3https://doaj.org/toc/2045-2322Abstract Human activities have increased the global circulation of mercury, a potent neurotoxin. Mercury can be converted into methylmercury, which biomagnifies along aquatic food chains and leads to high exposure in fish-eating populations. Here we quantify temporal trends in the ocean-to-land transport of total mercury and methylmercury from fisheries and we estimate potential human mercury intake through fish consumption in 175 countries. Mercury export from the ocean increased over time as a function of fishing pressure, especially on upper-trophic-level organisms. In 2014, over 13 metric tonnes of mercury were exported from the ocean. Asian countries were important contributors of mercury export in the last decades and the western Pacific Ocean was identified as the main source. Estimates of per capita mercury exposure through fish consumption showed that populations in 38% of the 175 countries assessed, mainly insular and developing nations, were exposed to doses of methylmercury above governmental thresholds. Our study shows temporal trends and spatial patterns of Hg transport by fisheries. Given the high mercury intake through seafood consumption observed in several understudied yet vulnerable coastal communities, we recommend a comprehensive assessment of the health exposure risk of those populations.Raphael A. LavoieAriane BouffardRoxane MarangerMarc AmyotNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 8, Iss 1, Pp 1-9 (2018)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Raphael A. Lavoie Ariane Bouffard Roxane Maranger Marc Amyot Mercury transport and human exposure from global marine fisheries
description	Abstract Human activities have increased the global circulation of mercury, a potent neurotoxin. Mercury can be converted into methylmercury, which biomagnifies along aquatic food chains and leads to high exposure in fish-eating populations. Here we quantify temporal trends in the ocean-to-land transport of total mercury and methylmercury from fisheries and we estimate potential human mercury intake through fish consumption in 175 countries. Mercury export from the ocean increased over time as a function of fishing pressure, especially on upper-trophic-level organisms. In 2014, over 13 metric tonnes of mercury were exported from the ocean. Asian countries were important contributors of mercury export in the last decades and the western Pacific Ocean was identified as the main source. Estimates of per capita mercury exposure through fish consumption showed that populations in 38% of the 175 countries assessed, mainly insular and developing nations, were exposed to doses of methylmercury above governmental thresholds. Our study shows temporal trends and spatial patterns of Hg transport by fisheries. Given the high mercury intake through seafood consumption observed in several understudied yet vulnerable coastal communities, we recommend a comprehensive assessment of the health exposure risk of those populations.
format	article
author	Raphael A. Lavoie Ariane Bouffard Roxane Maranger Marc Amyot
author_facet	Raphael A. Lavoie Ariane Bouffard Roxane Maranger Marc Amyot
author_sort	Raphael A. Lavoie
title	Mercury transport and human exposure from global marine fisheries
title_short	Mercury transport and human exposure from global marine fisheries
title_full	Mercury transport and human exposure from global marine fisheries
title_fullStr	Mercury transport and human exposure from global marine fisheries
title_full_unstemmed	Mercury transport and human exposure from global marine fisheries
title_sort	mercury transport and human exposure from global marine fisheries
publisher	Nature Portfolio
publishDate	2018
url	https://doaj.org/article/5b00f65201bf4e2f8ba40a00dc31283e
work_keys_str_mv	AT raphaelalavoie mercurytransportandhumanexposurefromglobalmarinefisheries AT arianebouffard mercurytransportandhumanexposurefromglobalmarinefisheries AT roxanemaranger mercurytransportandhumanexposurefromglobalmarinefisheries AT marcamyot mercurytransportandhumanexposurefromglobalmarinefisheries
_version_	1718395517212295168

Mercury transport and human exposure from global marine fisheries

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