Tagged: Scotland

Clayoquot Salmon with lice

Clayoquot emergency drug trial

Norwegian salmon farming giant Cermaq has a salmon lice problem on their Clayoquot Sound salmon farms. Documents released through Access to Information indicate Cermaq obtained an Emergency Drug Release to use the insecticide Lufenuron to control salmon lice in the Clayoquot Sound UNESCO Biosphere Region.

Last year saw salmon lice numbers in Clayoquot spike to levels never before seen in British Columbia, up to 55 lice per farmed fish—eighteen times the threshold for treatment set out by Department of Fisheries (DFO). Independent monitoring found wild salmon juveniles had lice counts as high as 50 per fish.

Cermaq is unable to control their salmon lice epidemic in Clayoquot Sound. Their 2018 lice outbreak likely devastated last year’s wild salmon cohort, and their 2019 numbers are already up to 5 times the DFO limit, right at the beginning of the wild salmon out-migration window. Continue reading