Evolutionarily singular strategies and the adaptive growth and branching of the evolutionary tree
Evolutionarily singular strategies and the adaptive growth and branching of the evolutionary tree
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DOI：
10.1023/a:1006554906681
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发表时间：
1998-01-01
影响因子：
1.9
通讯作者：
Metz, JAJ
中科院分区：
文献类型：
--
作者：
Geritz, SAH;Kisdi, E;Metz, JAJ
我们提出了一个建模适应性状动力学的一般框架，其中我们整合了来自现代ess理论的各种概念和技术。作为进化奇异策略概念的推广，引入了进化奇异策略的概念。我们给出了奇异策略在ess稳定性、收敛稳定性、奇异策略在初始稀有时入侵其他种群的能力以及在奇异策略的邻域中出现保护二态的可能性等方面的完整分类。特别令人感兴趣的是一种奇异策略，它是远距离的进化吸引物，但一旦进入邻近区域，种群就会变成二态的，并经历导致进化分支的破坏性选择。因此，对进化树的适应性生长和分支进行建模可以被认为是该框架的主要应用。Levene的“软选择”模型的单倍体版本被开发为一个具体的例子，以展示单态和多态种群的进化动力学和分支。
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.