Figure 1. Proportion of (a) normally, (b) abnormally, and (c) total
(=normally+abnormally) fertilized eggs as function of sperm
concentration in mussels collected from high (H) and low (L) population
density and mated in a fully factorial fertilisation design. For each
experimental block, four females were paired with four males (andvice versa ) at six different sperm concentrations. Each line
within a panel represent the mean of a specific male and female
population density. Hence, comparing the red vs blue lines shows the
difference between H and L females. Comparing squared vs circles shows
the differences between H and L males.