Polymorphism from environmental heterogeneity: Some features of genetically induced niche preference (Q1105512)

The author investigates a model for genetically induced niche preference. The model assumes a panmictic diploid population, an environment divided into two niches, each niche ma found to be successful for a number of classic models this is not universally the case. Here we report on almost disastrous failure for an otherwise acceptable scheme with mass-action kinetics. We show that the oscillatory behaviour predicted by the pooled chemical approximation does not survive into the full scheme, and perhaps more significantly, when we come to consider the behaviour for large values of the initial concentration of the pooled chemical, we find that the time in which this pooled chemical is used up decreases as its initial concentration is increased.