Amoebic gill disease (AGD) is a significant issue in Atlantic salmon mariculture. Research on the development of treatments or vaccines uses experimental challenges where exposed to amoebae concentrations ranging from 500 5,000/L. However, water N. perurans affected farms are much lower. The lowest concentration previously reported cause AGD was 10/L. Here, we report that as low 0.1/L can AGD. ...

Amoebic gill disease (AGD) is one of the largest threats to salmon aquaculture, causing serious economic and animal welfare burden. Treatments can be expensive and environmentally damaging, hence the need for alternative strategies. Breeding for disease resistance can contribute to prevention and control of AGD, providing long-term cumulative benefits in selected stocks. The use of genomic sele...

Salmon gill disease in Norway is most cases associated with a range of different pathogens, stress and environmental factors. Paramoeba perurans other amoebae have been isolated during such outbreaks. Other from salmon include P. pemaquidensis, Tetramitus sp. Vannella Here we tested the pathogenicity first 2 species challenge experiments. We found that even when clonal cultures pemaquidensis es...