Differences in honey bee bacterial diversity and composition in agricultural and pristine environments – a field study

Agrochemicals and biocides are suspected to cause a dysbiosis of honey bee microbiota, decreasing colonies ability to respond to the environment. As a first step to investigate agriculture and beekeeping impact, hives bacteriomes from an anthropized environment (Agri-env) were compared to that of pr...

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Bibliographic Details
Authors: Muñoz Colmenero, Ana Marta, Baroja Careaga, Igor, Kovačić, Marin, Filipi, Janja, Puškadija, Z., Kezić, N., Estonba, Andone, Büchler, Ralph, Zarraonaindia, Iratxe
Format: article
Publication Date:2020
Country:España
Institution:Universidad Complutense de Madrid (UCM)
Repository:Docta Complutense
Language:English
OAI Identifier:oai:docta.ucm.es:20.500.14352/109475
Online Access:https://hdl.handle.net/20.500.14352/109475
Access Level:Open access
Keyword:579.62
595.799
638.1
Honey bee
Bacteriome
Environment
Agriculture
Beekeeping
Microbiología (Biología)
Insectos
2413 Biología de Insectos (Entomología)
2414 Microbiología
3104 Producción Animal
Description
Summary:Agrochemicals and biocides are suspected to cause a dysbiosis of honey bee microbiota, decreasing colonies ability to respond to the environment. As a first step to investigate agriculture and beekeeping impact, hives bacteriomes from an anthropized environment (Agri-env) were compared to that of pristine’s (Prist-env). 16S rRNA sequencing evidenced differences in richness and composition between sample types (Gut (G), Brood (B), Bee-bread (BB)) and environments. Higher opportunist loads and shifts toward taxa capable of metabolizing insecticides were observed in G and B at Agri-env, while beneficial bacteria were enriched in Prist-env. Bacteria in BB did not differ, the acidity of the niche outweighing the influence of external factors. Results showed the environment plays a major role in shaping honey bee microbiota, the agricultural realm inducing a bacterial disruption that would let to colonies vulnerability. In contrast, a less susceptible bee will be promoted in less anthropized locations.