Spatial heterogeneity and polymorphism in host - parasite interactions
نویسنده
چکیده
Section 1. Direct frequency-dependent selection (on any gene) generated by migration between two demes with different environments is negatively correlated with allele frequency. Section 2. Direct frequency-dependent selection is also generated by migration between demes with different environments if migration takes place before selection. Section 3. Dependence of parasite equilibrium allele frequencies on host migration and vice-versa Section 4. Direct frequency-dependent selection on resistance and avirulence genes generated by migration between demes with different environments. Section 5: Conditions for stability of the interior equilibrium point Section 6: Frequency of oscillations of the simple gene-for-gene system close to the unstable interior, non-trivial equilibrium. Section 7: The strength of direct frequency-dependent selection depends on the difference of oscillation periods in a two-deme meta-population Section 8: The special case of a homogeneous environment
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