A preliminary study into effects of seawater acclimation on the progression of Amoebic Gill Disease (AGD) in out of season Atlantic salmon (Salmo salar, L.)

Three groups of out of season Atlantic salmon (Salmo salar L,) were challenged with Neoparamoeba spp. The first group was seawater acclimated for 7d and then maintained in full strength seawater for another 7d prior to challenge. The second group was acclimated in seawater for 7d only and the third group was moved directly to seawater from fresh water prior to challenge. 34 days post challenge survival was 19, 50 and 0% respectively.