Exploring apostatic selection

Abstract

1. The mathematically simplest description of apostatic selection is that the relative numbers of two morphs taken by a predator are some power of the apparent relative numbers available. 2. From the model follow two methods of estimating the value of the apostatic power function and of the relative visibility of the morphs, given certain data.3. The model is an adequate description of some experimental data which show apostatic selection. 4. The exactitude of fit of the model to the data suggests that there is not, as often thought, a high variance in the apostatic selection imposed by individual predators. © 1970, The Genetical Society of Great Britain. All rights reserved.