Close up of veterinarian inspecting salmon for lice on fish farm

sea lice outbreaks sea lice salmon farmers salmon production norwegian farmedsalmon production fish farming pisciculture field monitoring salmon farm scandinavia aquaculture fish farm fishery scandinavian ectoparasites chemical nordland fish skin sustainability norway oceanfarmed treatment fishing industry salmon aquafarm fish marine ectoparasites aquatic ectoparasitic copepods health concern lesions commercial industry food production copepod parasites sea louse problem mortality native parasite lepeophtheirus salmonis health seafood infestation crustaceans veterinarian business threats