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Fig. 1. Changes in plasma Na+, Cl, K+
(AC) and cortisol (DF) concentrations, and gill
Na+/K+-ATPase activity (GI) in lake trout
(A,D,G), brook trout (B,E,H) and Atlantic salmon (C,F,I) following direct
transfer from 0 p.p.t. to 30 p.p.t. Each value represents the mean ±
s.e.m., N=10 (except for 7 days in A,D,G: N=8; in B,E,H:
N=5). Symbols in AC: circles, Na+; triangles,
Cl; squares, K+. Values with different lowercase
letters are significantly different (e.g. a significant difference is observed
between `a' and `b', but not between `a' and `a,b', or between `b' and `a,b',
P<0.05, TukeyKramer test).