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Distribution and structure of lesions in the gills of Atlantic salmon, Salmo salar L., affected with amoebic gill disease

Citation

Adams, MB and Nowak, BF, Distribution and structure of lesions in the gills of Atlantic salmon, Salmo salar L., affected with amoebic gill disease, Journal of Fish Diseases, 24, (9) pp. 535-542. ISSN 0140-7775 (2001) [Refereed Article]

DOI: doi:10.1046/j.1365-2761.2001.00330.x

Abstract

Gills of Atlantic salmon, Salmo salar L., with amoebic gill disease (AGD), were analysed by routine histology to identify lesion morphology and distribution patterns. Numbers of lesions occurring dorsally, medially and ventrally in the gill filaments were recorded as was lesion size, proximity to the gill arch and the degree of pathological severity involved. The mean number of lesions and pathological severity in the dorsal region of the second left gill arch were significantly higher than that found ventrally (P < 0.01). There were no significant differences between gill regions in lesion size or proximity of lesions to the gill arch. Serially sectioned lesions revealed interlamellar cysts to be spherical to ovate in shape and fully enclosed within a wall of epithelium. Small to medium size cysts sometimes contained necrotic amoebae. Inflammatory cells, morphologically identified as neutrophils and macrophages, were occasionally seen infiltrating medium sized cysts. Larger cysts were mostly clear of any cellular debris.

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:Adams, MB (Dr Mark Adams)
Author:Nowak, BF (Professor Barbara Nowak)
ID Code:22107
Year Published:2001
Web of Science® Times Cited:74
Deposited By:TAFI - Aquaculture
Deposited On:2001-08-01
Last Modified:2011-11-07
Downloads:0

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