Fig. 5.

Captures of Culex mosquitoes in traps baited with nonanal, CO₂, or a combination of these two attractants. (A) Nonanal-baited traps caught significantly more mosquitoes than control traps. (B) Synergistic effect of nonanal indicated by significantly higher captures (50% increase) in traps baited with a combination of CO₂ and nonanal than those loaded with CO₂ alone. (C) Similar results (66% increase) were obtained when the combined lure was compared with individual attractants in a separate location. Treatments followed by the same letters are not significantly different at the 5% level according to Tukey HSD.