Fig. 1 in Bacillus thuringiensis subspecies kurstaki reduces competition by Parapoynx diminutalis (Lepidoptera: Crambidae) in colonies of the hydrilla biological control agent Cricotopus lebetis (Diptera: Chironomidae)

Fig. 1. Emergence of Parapoynx diminutalis adults from Bacillus thuringiensis (subspecies kurstaki; Btk) treated water containing Hydrilla verticillata. Moth emergence is shown as a proportion of initial larvae. Bars are means ± SE. Asterisks indicate significance between concentrations of Btk per 3.8 L of well water and the control using Dunnett's test.