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arXiv 2210.10552q-bio.PEmath.DS
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一般非线性模仿导致生态演化动力学中的极限环

General non-linear imitation leads to limit cycles in eco-evolutionary dynamics

Yuan Liu, Lixuan Cao, Bin Wu

摘要:

生态演化动力学对于理解个体行为和周围环境如何相互作用至关重要。通常,假设个体通过线性模仿函数更新其行为,即,复制者的动力学在这种生态演化动力学中,不可能存在极限环。这表明,生态演化动力学本身不足以解释在生物和社会系统中广泛观察到的波动行为。我们从线性模仿函数外推到一般的模仿函数,它可以是非线性的。结果表明,一般的模仿不改变内部平衡及其局部稳定性。然而,它导致了极限环,这是从来没有出现在经典的生态演化动力学。此外,平均合作水平和平均环境状态与内部不动点的第一和第二分量一致。此外,我们估计的位置的紧急极限环。一方面,我们的研究结果为"公地悲剧"中合作者和背叛者的周期性共存提供了另一种机制,并表明全球生态演化动力学对模仿函数是敏感的。我们的工作表明,模仿的方式,即,模仿功能在生态演化动力学中是至关重要的,这对于静态环境的演化动力学是不正确的。

英文摘要:

Eco-evolutionary dynamics is crucial to understand how individuals' behaviors and the surrounding environment interplay with each other. Typically, it is assumed that individuals update their behaviors via linear imitation function, i.e., the replicator dynamics. It has been proved that there cannot be limit circles in such eco-evolutionary dynamics. It suggests that eco-evolutionary dynamics alone is not sufficient to explain the widely observed fluctuating behavior in both the biological and social systems. We extrapolate from the linear imitation function to general imitation function, which can be non-linear. It is shown that the general imitation does not change the internal equilibrium and its local stability. It however leads to limit cycles, which are never present in classical eco-evolutionary dynamics. Moreover, the average cooperation level and average environment state agree with the first and the second component of the internal fixed point. Furthermore, we estimate the location of the emergent limit cycle. On the one hand, our results provide an alternative mechanism to make cooperators and defectors coexist in a periodic way in the "tragedy of the commons" and indicates the global eco-evolutionary dynamics is sensitive to the imitation function. Our work indicates that the way of imitation, i.e., the imitation function, is crucial in eco-evolutionary dynamics, which is not true for evolutionary dynamics with a static environment.

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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