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Physiological effects of freshwater bathing of Atlantic salmon (Salmo salar) as a treatment for amoebic gill disease

Citation

Powell, MD and Parsons, HJ and Nowak, BF, Physiological effects of freshwater bathing of Atlantic salmon (Salmo salar) as a treatment for amoebic gill disease, Aquaculture, 199, (3-4) pp. 259-266. ISSN 0044-8486 (2001) [Refereed Article]

DOI: doi:10.1016/S0044-8486(01)00573-7

Abstract

The physiological effects of bathing marine net-pen reared Atlantic salmon with freshwater: the treatment for amoebic gill disease (AGD) in Tasmania was evaluated. Acute exposure of AGD affected salmon to hyperoxic freshwater for at least 2 h resulted in a decrease in gill succinic dehydrogenase activity and increases in the total number of mucous cells on the gills. Plasma ions, respiratory and acid-base variables were unaffected by acute hyperoxic and normoxic exposure. Thus, it was concluded that freshwater bathing as a treatment for AGD poses little risk of side effects, but also no benefit with regard to the physiological status of the salmon. Reduced gill enzyme activity may restrict prolonged bathing times, suggesting that care should be taken to ensure that the hyper-ionoregulatory capacity of the salmon is not compromised. © 2001 Elsevier Science B.V. All rights reserved.

Item Details

Item Type:Refereed Article
Research Division:Agricultural and Veterinary 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
Author:Powell, MD (Dr Mark Powell)
Author:Parsons, HJ (Ms Heidi Joy Parsons)
Author:Nowak, BF (Professor Barbara Nowak)
ID Code:21228
Year Published:2001
Web of Science® Times Cited:28
Deposited By:TAFI - Aquaculture
Deposited On:2001-08-01
Last Modified:2011-09-20
Downloads:0

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