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Experimental exposure to low concentrations of Neoparamoeba perurans induces amoebic gill disease in Atlantic salmon
Author(s) -
Bridle Andrew R.,
Hill Thomas,
Smith Aaron,
Crosbie Philip,
Nowak Barbara F.
Publication year - 2021
Publication title -
journal of fish diseases
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.819
H-Index - 85
eISSN - 1365-2761
pISSN - 0140-7775
DOI - 10.1111/jfd.13363
Subject(s) - mariculture , biology , fishery , fish <actinopterygii> , ecology , aquaculture
Amoebic gill disease (AGD) is a significant issue in Atlantic salmon mariculture. Research on the development of treatments or vaccines uses experimental challenges where salmon is exposed to amoebae concentrations ranging from 500 to 5,000/L. However, the water concentrations of N. perurans on affected salmon farms are much lower. The lowest concentration of N. perurans previously reported to cause AGD was 10/L. Here, we report that concentrations as low as 0.1/L of N. perurans can cause AGD. We propose that concentrations of N. perurans that reflect those measured on salmon farms should be used for future experimental challenges.

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