Table 2.
Fitnesses of hosts and parasites in model B with two parasite generations (G=2) (parameters defined in §4).
| parasite genotypes (frequencies) within host generation g | fitness at beginning of host generation g+1 | ||||
|---|---|---|---|---|---|
| first generation | fitness of first parasite generation | second generation | fitness of second parasite generation | host fitness | |
| host genotype RES (Rg) | AVR (Ag) | 1 | AVR (Ag, 1) | 0 | 1−u |
| avr (ag, 1) | 1−b | (1−u)(1−ϵ) | |||
| avr (ag) | 1−b | (AVR negligible) | — | — | |
| avr (ag) | 1−b | (1−u)(1−ϕ) | |||
| host genotype res (rg) | AVR (Ag) | 1 | (avr negligible) | — | — |
| AVR (Ag) | 1 | 1−ϕ | |||
| avr (ag) | 1−b | (AVR negligible) | — | — | |
| avr (ag) | 1−b | 1−ϕ | |||