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arXiv 2207.04577q-bio.PEmath.DSnlin.AOnlin.PSphysics.app-ph
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循环模型中局部流行病爆发的自适应生存运动策略

Adaptive survival movement strategy to local epidemic outbreaks in cyclic models

J. Menezes, B. Moura, E. Rangel

摘要:

我们研究了五个物种的生物体面临当地疫情爆发的广义石头剪刀布游戏。作为一种进化行为的生存策略,物种中的一个生物体朝着敌人的敌人更多的方向移动,以免受选择的保护。我们认为,每一个生物体扫描环境,执行社会距离,而不是聚集时,感知到生病的生物体的密度高于一个可容忍的阈值。通过随机模拟,我们研究了适应性运动生存策略对空间格局形成的干扰,计算了每个物种生物栖息的典型空间域的特征长度尺度。我们计算了社交距离触发器如何影响一个人在循环游戏中被杀死并被疾病污染的机会。结果表明,由于生物的局部适应性,物种在循环博弈中占据优势。物种所占据的领土随着学会触发社会距离策略的个体比例的增长而增长。我们还表明,感知大距离的生物体更正确地执行适应策略,及时触发社交距离策略并选择正确的移动方向。我们的研究结果可能有助于理解环境变化威胁生物多样性时适应行为的作用。

英文摘要:

We study the generalised rock-paper-scissors game with five species whose organisms face local epidemic outbreaks. As an evolutionary behavioural survival strategy, organisms of one out of the species move in the direction with more enemies of their enemies to benefit from protection against selection. We consider that each organism scans the environment, performing social distancing instead of agglomerating when perceiving that the density of sick organisms is higher than a tolerable threshold. Running stochastic simulations, we study the interference of the adaptive movement survival strategy in spatial pattern formation, calculating the characteristic length scale of the typical spatial domains inhabited by organisms of each species. We compute how social distancing trigger impacts the chances of an individual being killed in the cyclic game and contaminated by the disease. The outcomes show that the species predominates in the cyclic game because of the organisms' local adaptation. The territory occupied by the species grows with the proportion of individuals learning to trigger the social distancing tactic. We also show that organisms that perceive large distances more properly execute the adaptive strategy, promptly triggering the social distancing tactic and choosing the correct direction to move. Our findings may contribute to understanding the role of adaptive behaviour when environmental changes threaten biodiversity.

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