"The purpose of the initiative is to fight Gyrodactylus salaris and then restore healthy salmon stocks in the rivers. This is according to a national plan of action that is rooted in Parliament. So far, treatment has been carried out in 41 Norwegian salmon rivers. Twenty of these are recovered, while 14 rivers are processed and await the clean bill," says Roar Sandodden at the National Veterinary Institute.
"In this round, we treat rivers Måna, Innfjordelva, Istra, Rauma, Glutra, Isa (Hensvassdraget) and Skorge as they are infected by the parasite."
Rotenone will be used to treat watercourses and associated rivers and streams and be completed within approximately 10 days.
The activity can lead to increased traffic both on public and private land.
Most fish stocks of salmon and sea trout are conserved in gene banks, and will be put back to their respective rivers when the treatments are completed.