Climate change and overfishing increase neurotoxicant in marine predators

Nature
Amina Traore SchartupElsie M Sunderland

Abstract

More than three billion people rely on seafood for nutrition. However, fish are the predominant source of human exposure to methylmercury (MeHg), a potent neurotoxic substance. In the United States, 82% of population-wide exposure to MeHg is from the consumption of marine seafood and almost 40% is from fresh and canned tuna alone1. Around 80% of the inorganic mercury (Hg) that is emitted to the atmosphere from natural and human sources is deposited in the ocean2, where some is converted by microorganisms to MeHg. In predatory fish, environmental MeHg concentrations are amplified by a million times or more. Human exposure to MeHg has been associated with long-term neurocognitive deficits in children that persist into adulthood, with global costs to society that exceed US$20 billion3. The first global treaty on reductions in anthropogenic Hg emissions (the Minamata Convention on Mercury) entered into force in 2017. However, effects of ongoing changes in marine ecosystems on bioaccumulation of MeHg in marine predators that are frequently consumed by humans (for example, tuna, cod and swordfish) have not been considered when setting global policy targets. Here we use more than 30 years of data and ecosystem modelling to show that M...Continue Reading

References

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Dec 12, 2017·Environmental Science & Technology·Amina T SchartupElsie M Sunderland
Jan 18, 2018·Environmental Health Perspectives·Elsie M SunderlandKurt Bullard

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Citations

Dec 14, 2019·Angewandte Chemie·Antonio Francés-MonerrisDaniel Roca-Sanjuán
Jul 9, 2020·Nature Communications·Ruoyu SunCongqiang Liu
Jun 13, 2020·Global Change Biology·Lisa A LevinMoriaki Yasuhara
Sep 29, 2020·Philosophical Transactions. Series A, Mathematical, Physical, and Engineering Sciences·Erika von SchneidemesserLuke D Schiferl
Dec 23, 2020·International Journal of Epidemiology·Oskar KarlssonLinda S Birnbaum
Dec 2, 2020·Environmental Pollution·Fany SardenneEmmanuel Chassot
Dec 18, 2020·Journal of Hazardous Materials·Shu-Shen DaiQiaoyun Huang
Jan 29, 2021·Environmental Science and Pollution Research International·Michael Gochfeld, Joanna Burger
Dec 6, 2020·International Journal of Environmental Research and Public Health·Roger PamphlettDavid P Bishop
Dec 24, 2020·Annals of Global Health·Philip J LandriganPatrick Rampal
Jun 22, 2020·The Science of the Total Environment·Wesley W HuffmanZofia Baumann
May 19, 2021·Environmental Science and Pollution Research International·Zuzana Kompišová BallováGabriela Chovancová
May 26, 2021·Nature Communications·Yanxu ZhangPing Li
Jul 18, 2021·Neurochemical Research·Tao KeMichael Aschner
Nov 26, 2020·Environmental Science & Technology·Gaël Le CroizierDavid Point
Sep 15, 2021·Proceedings of the National Academy of Sciences of the United States of America·Chun-Mao TsengJohn R Reinfelder
Oct 1, 2021·Nature·Martin JiskraJeroen E Sonke
Nov 6, 2021·Environmental Science & Technology·Peipei WuYanxu Zhang

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