Experimental exposure to low concentrations of Neoparamoeba perurans induces amoebic gill disease in Atlantic salmon

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 affe...

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Bibliographic Details
Published in:Journal of Fish Diseases
Main Authors: Bridle, AR, Hill, T, Smith, A, Crosbie, P, Nowak, BF
Format: Article in Journal/Newspaper
Language:English
Published: Blackwell Publishing Ltd 2021
Subjects:
amoebic gill disease
experimental challenge
risk prediction
Atlantic salmon
Online Access:https://eprints.utas.edu.au/36234/
https://eprints.utas.edu.au/36234/1/143438%20-%20Experimental%20exposure%20to%20low%20concentrations%20of%20Neoparamoeba_OA.pdf
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Summary: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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