Aquaculture Welfare

Salmon Lice Integrated Management Welfare

Sea lice control in salmon farming involves trade-offs between louse welfare burden and the welfare costs of treatments.

Key Facts

Sea lice (Lepeophtheirus salmonis) cause skin damage, stress and secondary infections
Chemical bath treatments cause acute stress and potential toxicity in salmon
Biological controls using cleaner fish have their own welfare implications
Laser systems can selectively kill lice but affect stressed fish less effectively
Integrated management combining multiple methods reduces treatment frequency

Welfare Considerations

Sea lice management involves unavoidable welfare trade-offs. Untreated infestations cause chronic pain and injury; chemical treatments cause acute stress. Integrated approaches minimising both infestation burden and treatment frequency optimise welfare outcomes.

What You Can Do

Support salmon certification that requires integrated louse management plans
Ask retailers about louse treatment welfare standards in their supply chains
Advocate for investment in non-chemical louse control research and development