EVOLUTIONARILY UNSTABLE FITNESS MAXIMA AND STABLE FITNESS MINIMA OF CONTINUOUS TRAITS
EVOLUTIONARILY UNSTABLE FITNESS MAXIMA AND STABLE FITNESS MINIMA OF CONTINUOUS TRAITS
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DOI：
10.1007/bf01237642
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发表时间：
1993-09-01
影响因子：
1.9
通讯作者：
HARADA, Y
中科院分区：
文献类型：
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作者：
ABRAMS, PA;MATSUDA, H;HARADA, Y
我们提出了以下情况下的适应性变化模型：（1）适应一个单一的性状在一个单一的人口，其中一个给定的个人的适应度取决于人口的平均性状值以及自己的性状值;（2）适应两个（或更多）性状在一个单一的人口;（3）适应在两个或更多的相互作用的物种。我们分析了这些自适应方案的动态模型，其中平均性状值的变化率是健身梯度的递增函数（即个体健身与个体性状值的增加率）。这种模型已被用于进化博弈论中，通常适用于数量遗传性状的进化和表型可塑性性状的行为调整。几种不同的生态重要性状的适应动态可以导致最小化个体适应性的性状，并可以阻止向最大化个体适应性的性状进化。我们讨论生物的情况下，可能会产生这样的适应性失败的情况下，涉及觅食，捕食者回避，竞争和共同进化。结果认为，更多的关注动态稳定性的连续性状的演变模型。
We present models of adaptive change in continuous traits for the following situations: (1) adaptation of a single trait within a single population in which the fitness of a given individual depends on the population's mean trait value as well as its own trait value; (2) adaptation of two (or more) traits within a single population; (3) adaptation in two or more interacting species. We analyse a dynamic model of these adaptive scenarios in which the rate of change of the mean trait value is an increasing function of the fitness gradient (i.e. the rate of increase of individual fitness with the individual's trait value). Such models have been employed in evolutionary game theory and are often appropriate both for the evolution of quantitative genetic traits and for the behavioural adjustment of phenotypically plastic traits. The dynamics of the adaptation of several different ecologically important traits can result in characters that minimize individual fitness and can preclude evolution towards characters that maximize individual fitness. We discuss biological circumstances that are likely to produce such adaptive failures for situations involving foraging, predator avoidance, competition and coevolution. The results argue for greater attention to dynamical stability in models of the evolution of continuous traits.