2.11. Statistics
Results of the assays, except for the challenge test are presented as average
(±standard error) for six fish and were compared at each time point using one
way analysis of variance (ANOVA) and Student–Newman–Keuls multiple
range tests (SigmaStat 2.3, SPSS, Inc.). Significant differences between
experimental groups were expressed at a significance level ofPb 0.05. Feeding
trials were executed once, without repeats.