Host community structure can shape pathogen outbreak dynamics through a phylogenetic dilution effect

IF 4.6 1区环境科学与生态学 Q1 ECOLOGY

Functional Ecology Pub Date : 2024-09-14 DOI:10.1111/1365-2435.14641

Marjolein E. M. Toorians, Isabel M. Smallegange, T. Jonathan Davies

引用次数: 0

Abstract

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宿主群落结构可通过系统发育稀释效应影响病原体爆发动态

生物多样性的丧失和物种群落的人为改变正在影响疾病突发事件的频率和规模。这些变化可能与生物多样性增加（扩大）或减少（稀释）疾病流行的机制有关。生物多样性的影响可能是直接的，即有能力的宿主之间的接触被与汇宿主的接触所取代；也可能是间接的，即通过对宿主丰度的调节。在这里，我们引入了一个多宿主分区疾病模型，根据宿主的进化相关性对宿主的能力进行加权。我们的模型模拟了具有替代性和相加性装配模式的宿主群落以及频率和密度依赖性病原体传播模式，并据此估计了群落疾病爆发的可能性。模拟结果表明，即使物种丰富度不变，系统发育结构的差异也能使宿主群落从稀释疾病转变为扩大疾病。此外，我们还表明，系统发育稀释可以与通过物种丰富度实现的（典型）放大同时发生。我们利用描述宿主之间系统发育距离与疾病共享可能性之间关系的经验数据来说明我们的模型。我们的研究证明了宿主的进化史是如何通过系统发育稀释效应驱动疾病动态的。在期刊博客上免费阅读本文的通俗摘要。

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来源期刊

Functional Ecology 环境科学-生态学

CiteScore

9.00

自引率

1.90%

发文量

243

审稿时长

4 months

期刊介绍： Functional Ecology publishes high-impact papers that enable a mechanistic understanding of ecological pattern and process from the organismic to the ecosystem scale. Because of the multifaceted nature of this challenge, papers can be based on a wide range of approaches. Thus, manuscripts may vary from physiological, genetics, life-history, and behavioural perspectives for organismal studies to community and biogeochemical studies when the goal is to understand ecosystem and larger scale ecological phenomena. We believe that the diverse nature of our journal is a strength, not a weakness, and we are open-minded about the variety of data, research approaches and types of studies that we publish. Certain key areas will continue to be emphasized: studies that integrate genomics with ecology, studies that examine how key aspects of physiology (e.g., stress) impact the ecology of animals and plants, or vice versa, and how evolution shapes interactions among function and ecological traits. Ecology has increasingly moved towards the realization that organismal traits and activities are vital for understanding community dynamics and ecosystem processes, particularly in response to the rapid global changes occurring in earth’s environment, and Functional Ecology aims to publish such integrative papers.