Mortality makes coexistence vulnerable in evolutionary game of rock-paper-scissors.,Physical Review E

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Mortality makes coexistence vulnerable in evolutionary game of rock-paper-scissors.
Physical Review E ( IF 2.2 ) Pub Date : 2020-07-30 , DOI: 10.1103/physreve.102.012220
Sirshendu Bhattacharyya ₁ , Pritam Sinha ₂ , Rina De ₁ , Chittaranjan Hens ₂

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Multiple species in the ecosystem are believed to compete cyclically for maintaining balance in nature. The evolutionary dynamics of cyclic interaction crucially depends on different interactions representing different natural habits. Based on a rock-paper-scissors model of cyclic competition, we explore the role of mortality of individual organisms in the collective survival of a species. For this purpose a parameter called “natural death” is introduced. It is meant for bringing about the decease of an individual irrespective of any intra- and interspecific interaction. We perform a Monte Carlo simulation followed by a stability analysis of different fixed points of defined rate equations and observe that the natural death rate is surprisingly one of the most significant factors in deciding whether an ecosystem would come up with a coexistence or a single-species survival.

中文翻译：

在剪刀石头布的进化游戏中，死亡率使共存变得脆弱。

人们认为，生态系统中的多种物种会周期性竞争以维持自然平衡。循环相互作用的进化动力学关键取决于代表不同自然习性的不同相互作用。基于循环竞争的剪刀石头布模型，我们探索了单个生物的死亡率在物种集体生存中的作用。为此，引入了一个称为“自然死亡”的参数。它意在引起个体的死亡，而不考虑任何种内和种间相互作用。

更新日期：2020-07-30

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