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DNA barcodes reveal species-specific mercury levels in tuna sushi that pose a health risk to consumers
Journal Title
Biology Letters
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2010-04-21
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6
Publication Issue
5
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692
Publication End
695
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rsbl.2010.0156.pdf
Adobe PDF, 125.66 KB
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Abstract
Excessive ingestion of mercury--a health hazard associated with consuming predatory fishes--damages neurological, sensory-motor and cardiovascular functioning. The mercury levels found in Bigeye Tuna (Thunnus obesus) and bluefin tuna species (Thunnus maccoyii, Thunnus orientalis, and Thunnus thynnus), exceed or approach levels permissible by Canada, the European Union, Japan, the US, and the World Health Organization. We used DNA barcodes to identify tuna sushi samples analysed for mercury and demonstrate that the ability to identify cryptic samples in the market place allows regulatory agencies to more accurately measure the risk faced by fish consumers and enact policies that better safeguard their health.
Citation
Lowenstein JH, Burger J, Jeitner CW, Amato G, Kolokotronis SO, Gochfeld M. DNA barcodes reveal species-specific mercury levels in tuna sushi that pose a health risk to consumers. Biol Lett. 2010 Oct 23;6(5):692-5. doi: 10.1098/rsbl.2010.0156. Epub 2010 Apr 21. PMID: 20410032; PMCID: PMC2936149.