Disease hotspots or hot species? Infection dynamics in multi-host metacommunities controlled by species identity, not source location.,Ecology Letters

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Disease hotspots or hot species? Infection dynamics in multi-host metacommunities controlled by species identity, not source location.
Ecology Letters ( IF 7.6 ) Pub Date : 2020-05-01 , DOI: 10.1111/ele.13518
Mark Q Wilber ₁ , Pieter T J Johnson ₂ , Cheryl J Briggs ₁

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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.

中文翻译：

疾病热点或热点物种？由物种身份而非来源位置控制的多宿主元群落中的感染动态。

宿主社区中病原体的持久性受个体宿主到景观水平尺度的过程的影响，但分离这些过程的相对贡献具有挑战性。我们开发了理论来划分宿主物种、栖息地斑块和景观连通性对宿主和病原体元群落内病原体持久性的影响。我们使用这个框架来量化宿主物种组成和栖息地斑块特征对两栖动物病原体在整个景观中的持久性的贡献。通过对 6 种两栖动物的 11 000 多个宿主进行采样，我们发现单一宿主物种可以在 91% 的观察到的元群落中维持病原体。此外，这种占优势的维持物种平均贡献了与元社区中最具影响力的源斑块相比，景观水平的病原体持久性是其两倍。我们的分析表明，在物种和斑块如何促进病原体持续存在方面存在重大不平等，这对有针对性的疾病管理具有重要意义。

更新日期：2020-07-06

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