Fig. 2. Enzyme activities for pharyngeal jaw muscles of Tramitichromis intermedius (means ± S.E.M). (A) Citrate synthase activity. (B) 3-Hydroxyacyl-CoA dehydrogenase activity. (C) L-Lactate dehydrogenase activity. Gray bars represent males, and white bars represent females. Significant differences in activity between muscles for each sex are listed in the text. Asterisks indicate significant difference in activity for muscles between males and females (P<0.05). Abbreviations: levator externus 2 (LE2), levator externus 3 (LE3), levator externus 4 (LE4), levator posterior (LP), protractor pectoralis (PP), pharyngeohyodius (PH), pharyngeohyodius cleithralis externus (PHCE), pharyngeohyodius cleithralis internus (PHCI), retractor dorsalis (RD), axial muscle (Ax).