Fig. 3. Mean plasma cortisol concentrations in untreated rainbow trout
Oncorhynchus mykiss (control; N=12) as well as those given
an intraperitoneal implant containing either cortisol (50 mg hydrocortisone
21-hemisuccinate kg1 fish; N=10) or cortisol+RU486
(500 mg mifepristone kg1 fish; N=12). Values are
means ± 1 S.E.M. Groups that do not
share a letter were significantly different from one another (one-way ANOVA on
ranks followed by Dunn's post hoc multiple comparisons test,
P<0.001).