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Amoebic gill disease (AGD)-affected Atlantic salmon, Salmo salar L., are resistant to subsequent AGD challenge


Vincent, BN and Morrison, RN and Nowak, BF, Amoebic gill disease (AGD)-affected Atlantic salmon, Salmo salar L., are resistant to subsequent AGD challenge, Journal of Fish Diseases, 29, (9) pp. 549-559. ISSN 0140-7775 (2006) [Refereed Article]

DOI: doi:10.1111/j.1365-2761.2006.00751.x


There is inconsistent evidence of resistance of Atlantic salmon, Salmo salar L., to amoebic gill disease (AGD). Here, evidence is presented that demonstrates that Atlantic salmon exposed and subsequently challenged with AGD are more resistant than naïve control fish. Seventy-three per cent of Atlantic salmon previously exposed to AGD survived to day 35 post-challenge compared with 26% exposed to Neoparamoeba sp. for the first time, yet the gill pathology of surviving naïve control or previously exposed fish was not significantly different. Development of resistance to AGD is associated with anti-Neoparamoeba sp. antibodies that were detectable in serum of 50% of surviving Atlantic salmon previously exposed to AGD. However, anti-Neoparamoeba sp. antibodies were not detectable in cutaneous mucus of resistant fish. Increased resistance of Atlantic salmon after secondary Neoparamoeba sp. infection and detection of specific serum antibodies provides support for the development of a vaccine for AGD. © 2006 Blackwell Publishing Ltd.

Item Details

Item Type:Refereed Article
Research Division:Agricultural, Veterinary and Food Sciences
Research Group:Fisheries sciences
Research Field:Aquaculture
Objective Division:Animal Production and Animal Primary Products
Objective Group:Fisheries - aquaculture
Objective Field:Fisheries - aquaculture not elsewhere classified
UTAS Author:Vincent, BN (Miss Benita Vincent)
UTAS Author:Morrison, RN (Dr Richard Morrison)
UTAS Author:Nowak, BF (Professor Barbara Nowak)
ID Code:42100
Year Published:2006
Web of Science® Times Cited:28
Deposited By:TAFI - Aquaculture
Deposited On:2006-08-01
Last Modified:2011-11-07

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