Skip to main content
Fig. 6 | BMC Zoology

Fig. 6

From: Intermittent administration of peracetic acid is a mild environmental stressor that elicits mucosal and systemic adaptive responses from Atlantic salmon post-smolts

Fig. 6

Quantification of histopathological cases in the gills of Atlantic salmon intermittently exposed to PAA. A Distribution of cases relative to the total number of lamellae evaluated. Seven key indicators were evaluated – unaffected, lamellar clubbing, epithelial lifting, hypertrophy, hyperplasia, lamellar fusion and necrosis. Values presented are mean ± SE of 8 individual fish per sampling point. Different letters denote significant difference at P < 0.05. Samples were collected before and 22 and 45 days after exposure. Representative photomicrographs showing B area of normal gills where no changes were observed, common in the pre-exposed fish, and 3 of the most common histopathological reversible changes quantified including C lifting, D hypertrophy, E clubbing as shown by arrowheads. Sections were stained with AB/PAS. Scare bar = 100 μm

Back to article page