The Scottish Salmon & Trout Association (S&TA) has called on the government and Scottish Salmon Producers Organisation (SSPO) to take action over “appalling sea lice numbers” at a number of salmon farms in the country.

The call comes after the S&TA analyzed data on the problem, published by the SSPO, which revealed sea lice “are out of control” on some fish farms, said the association.

According to the S&TA, in June 2013 over one third of salmon farms -- 47 farms -- on the Scottish mainland and in the Hebrides were in areas where average sea lice numbers exceeded the industry’s own limit for sea lice.