arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2111.04876q-bio.PEnlin.AOnlin.CGnlin.PSphysics.bio-ph
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石头剪刀布模型中的移动性限制反捕食反应

Mobility-limiting antipredator response in the rock-paper-scissors model

J. Menezes, B. Moura

摘要:

反捕食行为存在于许多生物系统中,在这些系统中,个体集体对即将到来的攻击做出反应。反捕食者的反应可能会影响空间格局的形成和生态系统的稳定性,但需要一个有机体的成本,以促进集体的努力。研究了一个非等级的三营养系统,其捕食者与食饵之间的相互作用用石头剪刀布游戏规则来描述。在我们的空间随机模拟中,反捕食者的反应半径定义的最大猎物群的大小,干扰捕食者的行动,确定个人的成本参与反捕食者的战略。我们认为,每一种生物对集体努力的贡献是相等的,它的移动性受到用于反捕食反应的能量比例的限制。我们的研究结果表明,antipredator响应导致螺旋模式,与隔离的生物体的同一物种占据离开的空间域。我们发现,一个不太本地化的antipredator反应增加了单物种补丁的平均大小,提高个人对捕食的保护。最后,我们的研究结果表明,虽然捕食风险的增加,更本地化的反捕食者的反应,高流动性的限制有利于物种共存。我们的研究结果可能有助于生态学家理解导致生物系统稳定性的机制,其中局部性对物种之间的行为相互作用至关重要。

英文摘要:

Antipredator behavior is present in many biological systems where individuals collectively react to an imminent attack. The antipredator response may influence spatial pattern formation and ecosystem stability but requires an organism's cost to contribute to the collective effort. We investigate a nonhierarchical tritrophic system, whose predator-prey interactions are described by the rock-paper-scissors game rules. In our spatial stochastic simulations, the radius of antipredator response defines the maximum prey group size that disturbs the predator's action, determining the individual cost to participate in antipredator strategies. We consider that each organism contributes equally to the collective effort, having its mobility limited by the proportion of energy devoted to the antipredator reaction. Our outcomes show that the antipredator response leads to spiral patterns, with the segregation of organisms of the same species occupying departed spatial domains. We found that a less localized antipredator response increases the average size of the single-species patches, improving the protection of individuals against predation. Finally, our findings show that although the increase of the predation risk for a more localized antipredator response, the high mobility constraining benefits species coexistence. Our results may help ecologists understand the mechanisms leading to the stability of biological systems where locality is crucial to behavioral interactions among species.

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