Honey bee health decline represents a problem of global importance for the remarkable impact of these pollinators on the environment and human economy. The reduced bee survival is the final result of a multifactorial syndrome triggered by several stress factors, that may synergistically interact, inducing a reduction of bee immunocompetence. A common element to all collapsing colonies is the high loads of parasites and associated pathogens, such as Deformed Wing Virus (DVW). DWV is an endemic immunosuppressive virus that generates asymptomatic covert infections, kept in check by the bees' immune system when not exposed to stress agents which weaken antiviral barriers. Here we focus on the role that DWV viral infections can have on the modulation of honey bee microbiota. We compared microbiota composition of bees with low and high DWV levels, pointing out the occurrence of a gut dysbiosis in highly infected bees, which are characterized by a reduced level of Lactobacillus species. The comprehension of DWV effect on microbiota will likely allow to define blends of probiotic microorganisms which may help to rescue the decay of honey bee immune competence.
Impact of Deformed Wing Virus infection on honey bee gut microbiota / DE LEVA, Giovanna; Becchimanzi, A.; Di Lelio, I.; Damiani, C.; Pennacchio, F.. - (2022). (Intervento presentato al convegno XVI Congresso della Federazione Italiana Scienze della Vita (FISV)).
Impact of Deformed Wing Virus infection on honey bee gut microbiota
Giovanna De Leva;A. Becchimanzi;I. Di Lelio;F. Pennacchio
2022
Abstract
Honey bee health decline represents a problem of global importance for the remarkable impact of these pollinators on the environment and human economy. The reduced bee survival is the final result of a multifactorial syndrome triggered by several stress factors, that may synergistically interact, inducing a reduction of bee immunocompetence. A common element to all collapsing colonies is the high loads of parasites and associated pathogens, such as Deformed Wing Virus (DVW). DWV is an endemic immunosuppressive virus that generates asymptomatic covert infections, kept in check by the bees' immune system when not exposed to stress agents which weaken antiviral barriers. Here we focus on the role that DWV viral infections can have on the modulation of honey bee microbiota. We compared microbiota composition of bees with low and high DWV levels, pointing out the occurrence of a gut dysbiosis in highly infected bees, which are characterized by a reduced level of Lactobacillus species. The comprehension of DWV effect on microbiota will likely allow to define blends of probiotic microorganisms which may help to rescue the decay of honey bee immune competence.File | Dimensione | Formato | |
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