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Scottish farmers have deployed a device known as a Thermolicer to warm the water and detach the lice from fish.And farmers in North America and Europe are experimenting with using species of “cleaner fish” to coexist with the salmon and eat the lice.The worldwide supply of salmon fell almost 10 percent last year, with Norway, the largest producer in the world, especially hard hit.In Norway, there are hundreds of times more salmon in aquaculture than in the wild.Meanwhile Rula took away the allure of her typically typically glamorous hair and make-up look by clasping a dead brill fish to her chest as she posed, with an expression of concern on her face.Other celebrities involved in the 2017 campaign included Jane Horrocks, who faced away from the camera with a ling in her arms, as well as Eve Best and Florence Keith-Roach, who also stripped naked to pose with a mackerel and eel respectively.Farmers worldwide consider sea lice the biggest threat to their industry and say the persistent problem is making the fish more expensive to consumers.Farmed salmon was worth nearly billion in 2015, according to the Food and Agriculture Organisation of the United Nations.

Underwater drones inhabit the other end of the technological spectrum, zapping lice with lasers to kill them.

Scientists and fish farmers are working on new ways to control the pests, which So far it has been an uphill struggle that is a threat to a way of life in countries where salmon farming is a part of the culture.

“Our work has to be quicker than the evolution of the lice,” said Jake Elliott, vice president of Cooke Aquaculture in Blacks Harbour, New Brunswick.

That technology was developed in Norway and has been used there and in Scotland.

Cooke keeps a brood stock of fish in the hopes of breeding them for desirable traits such as disease resistance.

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