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Influence of salmonid gill bacteria on development and severity of amoebic gill disease
Citation
Embar-Gopinath, S and Butler, R and Nowak, BF, Influence of salmonid gill bacteria on development and severity of amoebic gill disease, Diseases of Aquatic Organisms, 67, (1-2) pp. 55-60. ISSN 0177-5103 (2005) [Refereed Article]
Abstract
The relationship between salmonid gill bacteria and Neoparamoeba sp., the aetiological agent of amoebic gill disease (AGD) was determined in vivo. Fish were divided into 4 groups and were subjected to following experimental infections: Group 1, amoebae only; Group 2, Staphylococcus sp. and amoebae; Group 3, Winogradskyella sp. and amoebae; Group 4, no treatment (control). Fish (Groups 1, 2 and 3) were exposed to potassium permanganate to remove the natural gill microflora prior to either bacterial or amoebae exposure. AGD severity was quantified by histological analysis of gill sections to determine the percentage of lesioned filaments and the number of affected lamellae within each lesion. All amoebae infected groups developed AGD, with fish in Group 3 showing significantly more filaments with lesions than other groups. Typically lesion size averaged between 2 to 4 interlamellar units in all AGD infected groups. The results suggest that the ability of Neoparamoeba sp. to infect filaments and cause lesions might be enhanced in the presence of Winogradskyella sp. The possibility is proposed that the prevalence of more severe AGD is due to the occurrence of Winogradskyella sp. at high concentrations on the gills. © Inter-Research 2005.
Item Details
Item Type: | Refereed Article |
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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: | Embar-Gopinath, S (Mrs Sridevi Embar-Gopinath) |
UTAS Author: | Butler, R (Dr Rick Butler) |
UTAS Author: | Nowak, BF (Professor Barbara Nowak) |
ID Code: | 37294 |
Year Published: | 2005 |
Web of Science® Times Cited: | 19 |
Deposited By: | TAFI - Aquaculture |
Deposited On: | 2005-08-01 |
Last Modified: | 2011-10-03 |
Downloads: | 0 |
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