Fig 4. Body mass and sex ratio of current-year (A) and 1-year-old (B) Altica brevicollis coryletorum beetles over time. Numbers 1–7 and 1–10 indicate successive dates of insect collection (see Materials and Methods).
One-way ANOVA was used to determine the effect of term on females (current-year, R 2 = 0.0824, P < 0.0001; 1-year-old, R 2 = 0.2530, P < 0.0001), males (current-year, R 2 = 0.0726, P < 0.0001; 1-year-old, R 2 = 0.1393, P < 0.0001), and the sex ratio (current-year, R 2 = 0.1028, P = 0.4779; 1-year-old, R 2 = 0.1545, P = 0.1955).