Evolutionarily singular strategies and the adaptive growth and branching of the evolutionary tree

S. A.H. Geritz, É Kisdi, G. Meszéna, J. A.J. Metz

Research output: Contribution to journalArticle

1076 Citations (Scopus)

Abstract

We present a general framework for modelling adaptive trait dynamics in which we integrate various concepts and techniques from modern ESS-theory. The concept of evolutionarily singular strategies is introduced as a generalization of the ESS-concept. We give a full classification of the singular strategies in terms of ESS-stability, convergence stability, the ability of the singular strategy to invade other populations if initially rare itself, and the possibility of protected dimorphisms occurring within the singular strategy's neighbourhood. Of particular interest is a type of singular strategy that is an evolutionary attractor from a great distance, but once in its neighbourhood a population becomes dimorphic and undergoes disruptive selection leading to evolutionary branching. Modelling the adaptive growth and branching of the evolutionary tree can thus be considered as a major application of the framework. A haploid version of Levene's 'soft selection' model is developed as a specific example to demonstrate evolutionary dynamics and branching in monomorphic and polymorphic populations.

Original languageEnglish
Pages (from-to)35-57
Number of pages23
JournalEvolutionary Ecology
Volume12
Issue number1
DOIs
Publication statusPublished - Jan 1 1998

Keywords

  • Adaptive dynamics
  • Evolutionarily singular strategy
  • Evolutionary branching
  • Evolutionary modelling

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics

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