Disease hotspots or hot species? Infection dynamics in multi-host metacommunities controlled by species identity, not source location.
Disease hotspots or hot species? Infection dynamics in multi-host metacommunities controlled by species identity, not source location.
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DOI：
10.1111/ele.13518
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发表时间：
2020-05
期刊：
影响因子：
8.8
通讯作者：
M. Wilber;Pieter T. J. Johnson;C. Briggs
中科院分区：
文献类型：
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作者：
M. Wilber;Pieter T. J. Johnson;C. Briggs
病原菌在寄主群落中的持久性受到在个体寄主到景观水平尺度上运行的过程的影响，但分离这些过程的相对贡献是具有挑战性的。在宿主和病原体元群落中，我们建立了宿主物种、栖息地斑块和景观连通性对病原体持久性的影响划分理论。我们使用这个框架来量化寄主物种组成和栖息地斑块特征对两栖动物病原体在景观中的持久性的贡献。通过对6种两栖动物的11000多个寄主进行采样，我们发现在91%的观察到的元群落中，单一寄主可以维持病原体。此外，与元群落中最具影响力的源斑块相比，这种优势维持物种对景观级病原体持久性的平均贡献是其两倍。我们的分析表明，物种和斑块对病原体持久性的影响存在实质性的不平等，这对有针对性的疾病管理具有重要意义。
Pathogen persistence in host communities is influenced by processes operating at the individual host to landscape-level scale, but isolating the relative contributions of these processes is challenging. We developed theory to partition the influence of host species, habitat patches and landscape connectivity on pathogen persistence within metacommunities of hosts and pathogens. We used this framework to quantify the contributions of host species composition and habitat patch identity on the persistence of an amphibian pathogen across the landscape. By sampling over 11 000 hosts of six amphibian species, we found that a single host species could maintain the pathogen in 91% of observed metacommunities. Moreover, this dominant maintenance species contributed, on average, twice as much to landscape-level pathogen persistence compared to the most influential source patch in a metacommunity. Our analysis demonstrates substantial inequality in how species and patches contribute to pathogen persistence, with important implications for targeted disease management.