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New 100% online training course from FishVet Group and Benchmark Knowledge Services on The Health and Welfare of Atlantic Salmon

Increasing Mercury Levels May be Harming Fish

03 February 2015, at 12:00am

US - Mercury contamination of ocean fish is a serious global health issue, and a new analysis of published reports reveals that the concentration of mercury in yellowfin tuna caught near Hawaii is increasing at a rate of 3.8 per cent per year.

Data suggest that mercury levels in the ocean are increasing due to human activity, and if atmospheric mercury emissions continue to increase, the concentration in the waters off the North Pacific could double by 2050.

"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. This confirms that mercury levels in open ocean fish are responsive to mercury emissions," said Dr Paul Drevnick, lead author of the Environmental Toxicology & Chemistry analysis.

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The Health and Welfare of Atlantic Salmon.

It is vital that fish farm operatives who are responsible for farmed fish are trained in their health and welfare. This will help to ensure that fish are free from disease and suffering whilst at the same time promote good productivity and comply with legislation.

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