Fig. 8.2 Amoebic gill disease in farmed Atlantic salmon. (a) Lamella
congestion with associated amoeba. (b) Hyperplasia of respiratory
epithelium and fusion of lamellae. (c) Interlamellar lacunae or
vesicles. (d) Heavy infestation of amoeba adjacent to the epithelial
surface. (a) Bar ¼ 20 μm. (b, c, d) Bar ¼ 50 μm
Fig. 8.3 Paramoeba perurans on hyperplastic gill epithelium
of farmed Atlantic salmon with amoebic gill disease. Medium power
Fig. 8.4 Amoebae causing gill hyerplasia in freshwater-farmed brook
trout. Amoebae are visible in cavernae in the hyperplastic tissue
(arrows). Medium power
8.2 Ciliophora
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congestion with associated amoeba. (b) Hyperplasia of respiratory
epithelium and fusion of lamellae. (c) Interlamellar lacunae or
vesicles. (d) Heavy infestation of amoeba adjacent to the epithelial
surface. (a) Bar ¼ 20 μm. (b, c, d) Bar ¼ 50 μm
Fig. 8.3 Paramoeba perurans on hyperplastic gill epithelium
of farmed Atlantic salmon with amoebic gill disease. Medium power
Fig. 8.4 Amoebae causing gill hyerplasia in freshwater-farmed brook
trout. Amoebae are visible in cavernae in the hyperplastic tissue
(arrows). Medium power
8.2 Ciliophora
109