OF all the fish health issues in salmon farming, the challenge of sea lice is probably the most contentious.Sea lice not only represent a problem for farmed fish, but also -although the extent of the threat is hotly contested - to their wild counterparts. That's why the "risk-based spatial framework" published for consultation by the Scottish Environment Protection Agency (SEPA) in December focuses on lice counts and the location of farms away from wild salmon migratory routes.The issue of sea lice is also a key consideration for Norway's "traffic light" system.Controlling sea lice numbers is, therefore, a priority for salmon and trout farmers operating marine sites. That's why, late last year, the MV Coastal Server made the long journey from Norway through the Panama Canal to British Columbia on Canada's westcoast.
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