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北美退伍军人节(Veterans Day),12 日无更新
arXiv 1407.3137q-bio.PEcond-mat.stat-mech
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竞争模式与进化种群的适应性

Modes of competition and the fitness of evolved populations

Tim Rogers, Alan J. McKane

摘要:

个体之间的竞争推动了整个物种的进化。虽然最适者生存的时间最长,产生的后代最多,但在某些情况下,最终的物种可能不是最佳的。在这里,使用一个简单的生态模型的理论分析和随机模拟,我们展示了如何竞争的模式可以深刻地影响进化物种的健身。当个体直接相互竞争时,自适应动态框架提供了对占据最大适应度位置的物种的数量和分布的准确预测。相比之下,如果竞争是由共同资源的消耗介导的,那么人口统计噪声会导致物种的稳定性接近最小的健身。

英文摘要:

Competition between individuals drives the evolution of whole species. Although the fittest individuals survive the longest and produce the most offspring, in some circumstances the resulting species may not be optimally fit. Here, using theoretical analysis and stochastic simulations of a simple model ecology, we show how the mode of competition can profoundly affect the fitness of evolved species. When individuals compete directly with one another, the adaptive dynamics framework provides accurate predictions for the number and distribution of species, which occupy positions of maximal fitness. By contrast, if competition is mediated by the consumption of a common resource then demographic noise leads to the stabilization of species with near minimal fitness.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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