Figure 2.

Mating frequency of females continuously exposed to SP⁺ (grey bars) or SP⁰ (white bars) males throughout their lives. Mating frequency was recorded twice a week for 3 h directly after lights on by checking the number of mating pairs every 20 min until all females were dead. Asterisks correspond to significant contrasts (***p < 0.001, **p < 0.01, *p < 0.05, n.s. = non-significant) in mating frequency between females from different populations mated to SP⁺ males (the pattern was similar when comparing females from different populations mated to SP⁰ males).