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物种特性、景观质量以及与蜜蜂的花卉资源重叠决定了植物-传粉者网络中的病毒传播。

Species traits, landscape quality and floral resource overlap with honeybees determine virus transmission in plant-pollinator networks.

作者信息

Maurer Corina, Schauer Alexandria, Yañez Orlando, Neumann Peter, Gajda Anna, Paxton Robert J, Pellissier Loïc, Schweiger Oliver, Szentgyörgyi Hajnalka, Vanbergen Adam J, Albrecht Matthias

机构信息

Agroecology and Environment, Agroscope, Zürich, Switzerland.

Ecosystems Landscape Evolution, Institute of Terrestrial Ecosystems, Department of Environmental Systems Science, ETH Zürich, Zürich, Switzerland.

出版信息

Nat Ecol Evol. 2024 Dec;8(12):2239-2251. doi: 10.1038/s41559-024-02555-w. Epub 2024 Oct 4.

DOI:10.1038/s41559-024-02555-w
PMID:39367259
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11618065/
Abstract

Emerging infectious diseases pose a threat to pollinators. Virus transmission among pollinators via flowers may be reinforced by anthropogenic land-use change and concomitant alteration of plant-pollinator interactions. Here, we examine how species' traits and roles in flower-visitation networks and landscape-scale factors drive key honeybee viruses-black queen cell virus (BQCV) and deformed wing virus-in 19 wild bee and hoverfly species, across 12 landscapes varying in pollinator-friendly (flower-rich) habitat. Viral loads were on average more than ten times higher in managed honeybees than in wild pollinators. Viral loads in wild pollinators were higher when floral resource use overlapped with honeybees, suggesting these as reservoir hosts, and increased with pollinator abundance and viral loads in honeybees. Viral prevalence decreased with the amount of pollinator-friendly habitat in a landscape, which was partly driven by reduced floral resource overlap with honeybees. Black queen cell virus loads decreased with a wild pollinator's centrality in the network and the proportion of visited dish-shaped flowers. Our findings highlight the complex interplay of resource overlap with honeybees, species traits and roles in flower-visitation networks and flower-rich pollinator habitat shaping virus transmission.

摘要

新发传染病对传粉者构成威胁。人为土地利用变化以及随之而来的植物 - 传粉者相互作用的改变,可能会加剧传粉者之间通过花朵进行的病毒传播。在此,我们研究了物种在花朵访花网络中的特征和作用以及景观尺度因素如何在12个传粉者友好(富含花朵)栖息地各异的景观中,驱动19种野生蜜蜂和食蚜蝇物种感染主要的蜜蜂病毒——黑蜂王台病毒(BQCV)和残翅病毒。养殖蜜蜂的病毒载量平均比野生传粉者高出十多倍。当野生传粉者的花卉资源利用与蜜蜂重叠时,其病毒载量更高,这表明野生传粉者是病毒宿主,并且随着传粉者数量和蜜蜂病毒载量的增加而增加。病毒流行率随着景观中传粉者友好栖息地的数量而降低,这部分是由于与蜜蜂的花卉资源重叠减少所致。黑蜂王台病毒载量随着野生传粉者在网络中的中心度以及所访碟形花的比例而降低。我们的研究结果突出了与蜜蜂的资源重叠、物种在花朵访花网络中的特征和作用以及富含花朵的传粉者栖息地在塑造病毒传播方面的复杂相互作用。

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