Figure 4.
Allele frequencies, wild genotype frequencies and population fitness over time, following the release of killer–rescue strains with either cK2 or cR2 being equal to 0.20 and the other being 0. (a) Single 2 : 1 release with fitness cost cR2=0.20, and cK2=0. (b) Single 2 : 1 release with fitness cost cK2=0.20, and cR2=0. (c) Four sequential releases, each at a 1 : 2 ratio with fitness cost cR2=0.20, and cK2=0. (d) Four sequential releases, each at a 1 : 2 ratio with fitness cost cK2=0.20, and cR2=0. In each case, the fitness costs are additive, with one insertion of K and R, and a 1 : 1 release sex ratio. Dash-dotted line, wild-type (kkrr); dotted line, K allele; dashed line, R allele; solid line, mean fitness.