Optimization, evolutionary stable strategies and heterosis in sexual populations (original) (raw)

Ethology Ecology & Evolution, 1992

Abstract

The aims of this paper are to recall and to illustrate one of the validity range boundaries of behavioural ecology and the evolutionary theory of games, within the field of neo-darwinian theory. The principles underlying these two disciplines can apply at the minimum condition that the pure or mixed strategy, which must remain at selective equilibrium, reproduces its kind. This important restriction has been explicitly stated by evolutionary games theorists, but not so clearly in the case of frequencyindependent selection which is also considered by behavioural ecologists. In sexual populations, this precludes in particular all the cases where the expected optimal or evolutionarily stable strategy is achieved in hétérozygotes, as hétérozygotes produce homozygotes at each generation.

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