Fig. 1

The number of fertilized eggs laid over ten weeks for each population cross. a The total number of fertilized eggs. Original host of the female population is indicated at the top of the plot. The colored symbols show population means, the lines show means for lineage crosses, and the dashed lines represent one standard error. Female populations are shown on the x-axis and the colors represent the male populations. Error bars represent one standard error. b The number of eggs laid per week, with different line types representing the male populations and colors representing the female populations. The black solid lines show the mean egg-laying curve for each lineage cross, and grey shading represents 95% confidence intervals