Figure 4.

Response of a host population infected with two feminising parasites to changes in feminisation efficiency (θ). Effects upon equilibrium host population size (H*), number of hosts infected with parasite 1 (Y*) and number of hosts infected with parasite 2 (Z*) of varying the feminisation efficiency (θ2) of parasite 2. The host population has parameters (a = 2, g = 0.27, b0 = 0.12, s = 0.000042, R0 = 2.06). Default parameters for parasite 1 are (ε = 0.84, θ = 0.66, α = 0.10, β = 0, γ = 0, μ = 0, R1 = 4.80), while for parasite 2 they are (ε = 0.84, θ = 0.66, α = 0.045, β = 0.0002, γ = 0, μ = 0, R2 = 4.26). With all rate parameters set at default values, the two parasites coexist stably.

Ironside et al. BMC Evolutionary Biology 2011 11:370   doi:10.1186/1471-2148-11-370
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