Figure 6.

Bar graphs illustrating the effects of selected treatments on: fight duration (A), relative frequency of mandible spreading and mandible engagement during the initial fight (B), and relative frequency of mandible spreading, mandible engagement, and rank reversal (loser wins) at reengagement test 1 (C) (experimental procedure as in Fig. 5). Gray bars, Ringer injected (n = 53 pairs); darkly hatched bars, flown for 3 min (n = 43 pairs); black bars, CDM injected (10 μl; 2 mm; n = 50 pairs); lightly hatched bars, flown AMT treated (n = 45). Asterisks denote statistically significant differences of test groups compared with Ringer-treated crickets (Mann-Whitney U test; ^*p < 0.05; ^**p < 0.01; ^***p < 0.001). re-eng., Reengagement.