Veterinarian with protective gear checks salmon skin for ectoparasites

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