Fig. 5.

Attraction of male bees to hydrocarbon blends mimicking fractions of an extract of a triungulin mass. “Unsat HC” treatment consisted of (Z)-9-C₂₁ (0.025 mg), (Z)-9-C₂₃ (0.860 mg), (Z)-11-C₂₁ (0.100 mg), (Z)-9-C₂₅ (1.25 mg), and (Z)-11-C₂₅ (0.252 mg); “Sat HC” treatment consisted of C₂₁ (0.089 mg), C₂₃ (1 mg), C₂₅ (0.252 mg), and C₂₇ (0.704 mg); “Total” treatment consisted of Unsat HC plus Sat HC (n = 5). Two-way ANOVA: treatment, F = 20.37, P = 0.0007, df = 2,14; trial, F = 4.01, P = 0.045, df = 4,14. Bars marked by the same letter are not significantly different (Student–Newman–Keuls procedure, P = 0.05).