Fig 3. Sex ratio of current-year (A and B) and 1-year-old (C and D) Gonioctena quinquepunctata beetles on Prunus padus (Pp) and Prunus serotina (Ps) shrubs growing in full light or shade (B and D). Numbers 1–6 and 1–8 indicate successive dates of insect collection (see Materials and Methods).
One-way ANOVA was used to determine the effect of term (length of the sampling period) on the sex ratio of beetles on Ps (current-year, R 2 = 0.2477, P = 0.1111; 1-year-old, R 2 = 0.7098, P < 0.0001), on Pp (current-year, R 2 = 0.1884, P = 0.2551; 1-year-old, R 2 = 0.7661, P < 0.0001), on sunlit shrubs (current-year, R 2 = 0.1286, P = 0.5031; 1-year-old, R 2 = 0.8441, P < 0.0001) and shaded shrubs (current-year, R 2 = 0.4109, P = 0.0053; 1-year-old, R 2 = 0.8590, P < 0.0001).