ArticleDie Naturwissenschaften2026
Widespread distribution of honey bee-associated pathogens in managed and wild bees.
Article in Die Naturwissenschaften, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Transmission of pathogens from managed to wild bees presents a significant ecological threat in diverse habitats. Interspecific pathogen transmission is widely documented and occurs frequently in shared environments. This study examines the prevalence and abundance of the bee-associated pathogens (DWV, BQCV, ABPV, CBPV, KBV, SBV, Nosema ceranae, Crithidia mellificae, Lotmaria passim, and Crithidia bombi) in wild bees sampled in sites with and without honey bees in the Coimbra district (Portugal). Using quantitative PCR and statistical modelling, the study identified interspecific pathogen transmission dynamics influenced by the presence of Apis mellifera colonies and wild bee genera. The findings revealed a high prevalence of pathogens, with DWV (87.22%), CBPV (70.71%), ABPV (48.95%) and N. ceranae (30.03%) being the most common in species. There is a broad susceptibility of different genera of bees, with a higher abundance of pathogens in Andrena, Halictus, and Megachile. The risk of ABPV and SBV infections was associated with sites close to the apiaries. Furthermore, ABPV and L. passim were mainly associated with honey bees, while C. bombi was associated with bumblebees. This study represents the first investigation of wild bee pathogens in mainland Portugal. It emphasizes the urgent need for integrative conservation strategies under a One-Health approach to mitigate the impacts of pathogens on pollinator biodiversity and ecosystem stability.
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