Fig. 2

Box-and-whisker plots of 11 ketotestosterone (11KT) plasma levels in European sea bass males during early stages of puberty. 11KT levels were measured at two different stages of pubertal development: stage I, corresponding to sexually immature testes and stage II corresponding to early recrudescent testes. Box represents uper and lower quartiles and maximum and minimum observed values are represented by whiskers. Horizontal line represents the median value (0.99 ng/ml for stage I and 2.90 ng/ml for stage II). The asterisk denotes statistical differences between both groups after a student t-test (p < 0.05); n = 20 in each experimental group