Mercury Level Rising in Yellowfin Tuna

February 4, 2015 3:45 PM

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A new study suggests that mercury concentration in the common commercial fishes of Northern Pacific is increasing at an alarming rate. Researchers, studying the coasts of Hawaii, have found this increase to be nearly 4 percent per year. The study has been published in the journal Environmental Toxicology & Chemistry and it mainly focused on yellowish tuna caught in North Pacific commercial fisheries. Lead author Paul Drevnick, from the University of Michigan Biological Station and School of Natural Resources and Environment explained “The take-home message is that mercury in tuna appears to be increasing in lock-step with data and model predictions for mercury concentrations in water in the North Pacific.”

The assessment of atmospheric mercury, released by the industries, formed the basis of these model predictions and comparison was made with historical records and published reports on yellowfin tuna, which were caught over the past half century near Hawaii. The results of the analysis showed that si...

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