The pressures facing wild Atlantic salmon populations including disease, pollution, barriers to migration, and the welfare implications of each.
Wild Atlantic salmon face welfare challenges across their entire life cycle. Sea lice from open-net salmon farms cause skin damage and impaired osmoregulation in wild smolts migrating past farm sites. River barriers create exhaustion and injury as salmon attempt to pass. Warming waters increase metabolic demands and disease susceptibility. Even catch-and-release angling - often presented as benign - causes acute stress and can cause delayed mortality when fish are handled poorly. The conservation crisis for wild salmon is also a welfare crisis for individual fish across their complex life history.