Population structure inhibits evolutionary diversification under competition for resources
Population structure inhibits evolutionary diversification under competition for resources
复制标题
资源竞争下的种群结构抑制进化多样化
DOI：
10.1023/a:1013306914977
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发表时间：
2004
期刊：
影响因子：
1.5
通讯作者：
T. Day
中科院分区：
文献类型：
--
作者：
T. Day
提出了一个模型，探讨人口结构如何影响生态资源竞争的进化结果。该模型假设对资源的竞争发生在有限数量个体的群体（相互作用群体）内，并且群体之间个体的有限分散（根据赖特的种群结构岛模型）导致种群的遗传结构。结果发现，有限大小的相互作用组和有限的分散可以有实质性的影响资源开发策略的演变相比，一个单一的，无限大的，混合良好的相互作用组的模型。一般来说，这两种效应都倾向于选择不那么激进的竞争策略。此外，这两种效应也倾向于减少资源开发策略的进化多样化的可能性，这种多样化经常发生在无限种群的资源竞争模型中。结果进行了讨论的背景下，资源开发策略和物种形成的进化多样化的理论。
A model is presented that explores how population structure affects the evolutionary outcome of ecological competition for resources. The model assumes that competition for resources occurs within groups of a finite number of individuals (interaction groups), and that limited dispersal of individuals between groups (according to Wright's island model of population structure) results in genetic structuring of the population. It is found that both finite-sized interaction groups and limited dispersal can have substantial effects on the evolution of resource exploitation strategies as compared to models with a single, infinitely large, well-mixed interaction group. Both effects, in general, tend to select for less aggressive competitive strategies. Moreover, both effects also tend to reduce the likelihood of the evolutionary diversification of resource exploitation strategies that often occurs in models of resource competition with infinite populations. The results are discussed in the context of theories of the evolutionary diversification of resource exploitation strategies and speciation.