Department of Applied Mathematics, The University of Western Ontario, London, ON, Canada.
J Evol Biol. 2011 Jul;24(7):1598-610. doi: 10.1111/j.1420-9101.2011.02291.x. Epub 2011 May 17.
The direct-fitness approach to modelling the evolution of social traits is an alternative to the classical inclusive-fitness-based approach. Despite both its utility and popularity, the direct-fitness approach has not yet been extended to include the analysis of dynamic traits, i.e. traits whose level of expression may vary over time. In this article, I apply the direct-fitness approach to cope with the evolution of a dynamic resource-allocation behaviour when this behaviour influences the fitness of relatives. I am able to implement the direct-fitness approach using components (reproductive value, fitness changes and measures of relatedness) found in standard, social-evolutionary models. I illustrate the modified direct-fitness model with an example studied by previous authors, and I show how the direct-fitness perspective can aid the validation of analytical results by means of a genetic algorithm.
直接适合度方法是一种替代经典的基于广义适合度的方法，用于模拟社会特征的进化。尽管该方法具有实用性和普及性，但它尚未扩展到包括动态特征（即表达水平可能随时间变化的特征）的分析。在本文中，我应用直接适合度方法来应对动态资源分配行为的进化，当这种行为影响亲属的适合度时。我能够使用标准的社会进化模型中找到的组件（生殖价值、适合度变化和亲属关系度量）来实现直接适合度方法。我用以前的作者研究过的一个例子来说明改进后的直接适合度模型，并展示了直接适合度视角如何通过遗传算法帮助验证分析结果。
