Fig. 2. Activities of total protein, glycolytic and mitochondrial enzymes in red muscle, sampled at three sites along the length of the body (behind the head, in the middle of the body and at the caudal peduncle) in starved and fed cod. Data are shown as means ± S.E.M. Letters above the error bars for each feeding treatment (starved/fed) indicate statistical differences; when two columns have the same letter, they do not differ (a posteriori comparisons, P>0.05). Abbreviations: CCO, cytochrome c oxidase; CS, citrate synthase; LDH, lactate dehydrogenase; PDH, pyruvate dehydrogenase; PFK, phosphofructokinase.