Figure 2.

Female fitness (mean eggs laid in 2 h period) in each population when mated to males from each of the six experimental D. melanogaster populations studied. Data are shown for each block separately because of the significant interactions with block (table 1). Plotted here are means±95% CL (calculated from the pooled estimate of error variance). Fitnesses from matings with local males are shown as white squares and dotted lines; fitnesses from matings with foreign males are shown with circles that are either not significantly different (filled) or significantly different (open; p<0.05, Dunnett's tests) from fitnesses when mating with local males. Comparisons that remained significant after Bonferroni correction are indicated with an asterisk.