Fig. 2. Effect of the interactions of sexual cannibalism with female post-maturity age and with male post-maturity age on how frequently males chose the palp with more sperm for their first insertion.

a Significantly more males chose the palp with more sperm when mating with older and cannibalistic females (blue line). b Younger males chose the palp with more sperm when mating with non-cannibalistic females (orange line). c Males selected the palp with a significantly higher sperm ratio when mating with an older female only if she was cannibalistic (blue line). d Younger males selected the palp with a significantly higher sperm ratio with a cannibalistic partner (blue line).