Supplementary results.

Results for juvenile steelhead sampled at Winthrop National Fish Hatchery in individual release years. Results for maturation measures (male only) separated according to rearing treatment (S1, S2) and visually determined qualitative smolt phenotype (parr, transitional, smolt, mature male). Results for finite mixture model (fmm) analysis of body weight and gill Na+/K+ ATPase activity. Morphological measures separated according to rearing treatment (S1, S2) and maturation status as determined by fmm analysis (immature, maturing, mature). (DOCX)