eCite Digital Repository

Pathology of experimental amoebic gill disease in Atlantic salmon, (Salmo salar L.), and the effect of pre-maintenance of fish in sea water on the infection

Citation

Zilberg, D and Munday, BL, Pathology of experimental amoebic gill disease in Atlantic salmon, (Salmo salar L.), and the effect of pre-maintenance of fish in sea water on the infection, Journal of Fish Diseases, 23, (6) pp. 401-407. ISSN 0140-7775 (2000) [Refereed Article]

DOI: doi:10.1046/j.1365-2761.2000.00252.x

Abstract

Atlantic salmon were exposed to amoebic gill disease (AGD) immediately following their acclimatization to sea water (group 1), or following a 2 week period of maintenance in sea water (group 2). Three fish from each group were sampled on days 0, 1, 2, 4, 7, 14 and 28 post-infection. Characteristic gill lesions began to occur between days 2 and 4, and dramatically increased by day 7. The number of gill lesions on fish from group 2 was significantly higher than on fish from group 1 on days 7 and 14 (P<0.001), but the two groups did not differ in any other parameter. Histologically, Paramoeba sp., the aetiological agent of AGD, could be seen on the gills of fish as soon as 1 day post-exposure, attached to healthy-appearing gills. Gill pathology in the form of hyperplasia and lamellar fusion followed shortly. AGD infection was accompanied by a significant increase in the number of gill mucous cells (P= 0.002). Different methods for the diagnosis of AGD are discussed.

Item Details

Item Type:Refereed Article
Research Division:Agricultural and Veterinary Sciences
Research Group:Fisheries Sciences
Research Field:Fish Pests and Diseases
Objective Division:Animal Production and Animal Primary Products
Objective Group:Fisheries - Aquaculture
Objective Field:Fisheries - Aquaculture not elsewhere classified
Author:Zilberg, D (Dr Dina Zilberg)
Author:Munday, BL (Dr Barry Munday)
ID Code:19011
Year Published:2000
Web of Science® Times Cited:46
Deposited By:TAFI - Aquaculture
Deposited On:2000-08-01
Last Modified:2011-11-07
Downloads:0

Repository Staff Only: item control page