arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1902.03016q-bio.PEcond-mat.stat-mechnlin.AO
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空间生态进化反馈在捕食系统共存中的作用

Spatial eco-evolutionary feedbacks mediate coexistence in prey-predator systems

Eduardo H. Colombo, Ricardo Martínez-García, Cristóbal, López, Emilio Hernández-García

摘要:

生态进化框架可以解释生态和进化过程发生在可比时间尺度上的群落的某些特征。在这里,我们调查是否演化动力学可能相互作用的空间结构的捕食者-捕食者社区中,这两个物种表现出有限的流动性和捕食者的感知范围受到自然选择。在这些条件下,我们的研究结果揭示了生态进化之间的反馈物种的空间混合和捕食者的感知范围:不同水平的混合选择不同的感知范围,这反过来又重塑猎物的空间分布及其与捕食者的相互作用。这种种间互动的新兴模式反馈到各种感知范围的效率,从而选择新的。最后,由于捕食混合的关键因素,调节捕食的强度,我们探讨了社区层面的影响,这种反馈,并表明它控制共存时间和物种灭绝概率。

英文摘要:

Eco-evolutionary frameworks can explain certain features of communities in which ecological and evolutionary processes occur over comparable timescales. Here, we investigate whether an evolutionary dynamics may interact with the spatial structure of a prey-predator community in which both species show limited mobility and predator perceptual ranges are subject to natural selection. In these conditions, our results unveil an eco-evolutionary feedback between species spatial mixing and predators perceptual range: different levels of mixing select for different perceptual ranges, which in turn reshape the spatial distribution of prey and its interaction with predators. This emergent pattern of interspecific interactions feeds back to the efficiency of the various perceptual ranges, thus selecting for new ones. Finally, since prey-predator mixing is the key factor that regulates the intensity of predation, we explore the community-level implications of such feedback and show that it controls both coexistence times and species extinction probabilities.

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