Department of Physics, Inha University, Incheon, 22212, Republic of Korea.
Max Planck Research Group 'Dynamics of Social Behavior', Max Planck Institute for Evolutionary Biology, Plön, 24306, Germany.
J Theor Biol. 2023 Nov 7;575:111629. doi: 10.1016/j.jtbi.2023.111629. Epub 2023 Oct 5.
We study evolutionary game dynamics in a growing habitat with vacancies. Fitness is determined by the global effect of the environment and a local prisoner's dilemma among neighbors. We study population growth on a one-dimensional lattice and analyze how the environment affects evolutionary competition. As the environment becomes harsh, an absorbing phase transition from growing populations to extinction occurs. The transition point depends on which strategies are present in the population. In particular, we find a 'cooperative window' in parameter space, where only cooperators can survive. A mutant defector in a cooperative community might briefly proliferate, but over time naturally occurring vacancies separate cooperators from defectors, thereby driving defectors to extinction. Our model reveals that vacancies provide a strong boost for cooperation by spatial selection.
我们研究了具有空位的生长栖息地中的进化博弈动态。适应性由环境的全局效应和邻居之间的局部囚徒困境决定。我们在一维格上研究种群增长，并分析环境如何影响进化竞争。随着环境变得恶劣，种群从增长到灭绝会发生一个吸收相变。相变点取决于种群中存在的策略。特别是，我们在参数空间中发现了一个“合作窗口”，只有合作者才能生存。合作社区中的突变缺陷体可能会短暂增殖，但随着时间的推移，自然产生的空位会将合作者与缺陷体分开，从而导致缺陷体灭绝。我们的模型表明，空位通过空间选择为合作提供了强大的推动力。
