Maturation status and predicted residuals by rearing treatment and sex.

Sample sizes and percentage of juvenile steelhead sampled at Winthrop National Fish Hatchery in release years 2011–2015 separated according to rearing treatment and sex for maturation status (immature, maturing, mature) and predicted residualism. Categorization of maturity is based on physiological measures (pituitary mRNA expression, follicle stimulating hormone beta-subunit (fshb), luteinizing hormone beta subunit (lhb); testis mRNA expression, anti-Mullerian hormone (amh), insulin-like growth factor-3 (igf3); gonadosomatic index, GSI; and plasma 11-ketotestosterone, 11KT) and their threshold values determined by finite mixture model analysis as described in the Methods section. Categorization of residuals is based on a combination of maturation status and fork length threshold determined by finite mixture model analysis as described in the Methods. Percentages are represented as a portion of total sample size within a release year for a given rearing treatment (S1, S2) and sex (male, female, all fish); these percentages were used to create Figs 8 and 10 (values in bold).
(XLSX)