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Norwegian study finds wider impacts of marine delousing agents

Anti-lice agents used in fish farming can cause serious harm to the wider environment, a study published by the Norwegian Climate and Pollution Agency (Klif) suggests. The study was conducted by the Institute of Marine Research (IMR) and National Institute of Nutrition and Seafood Research (Nifes) and examined the spread and impact of the delousing agents used in commercial fisheries. The study comes after a 2011 report from Klif identified two delousing agents, diflubenzuron and teflurbenzuron, as existing in high enough concentrations around fisheries that they could be harmful to crustaceans such as crabs and shrimp up to a mile away from the fishery.

Klif will now begin work on restricting the use of the chemicals in Norway’s commercial fish farms.

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