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Fig. 2. Mean food intake (mg food g-1 body mass) of rainbow trout before
and after exposure to 0 (N=10), 500 (N=10), 750
(N=10) or 1000 (N=10-12) µmol l-1
NH4Cl for either 24 (A) or 96 (B) h periods. Values are means + 1
S.E.M. Treatments that do not share a common
letter for a given feeding time and exposure period are significantly
different from each other. *Significant differences between the
pre- and post-NH4Cl exposure values for a given treatment;
significant differences between the 24 and 96 h
post-NH4Cl exposure values for a given treatment
(P<0.05).