Abstract
The deformed wing virus (DWV) is one of the most common bee pathogens, deemed responsible for both honey bee colony losses and general pollinator decline. That virus may infect both managed and wild bumblebees. In this study, the DWV infection was investigated in 52 free-flying Bombus terrestris (L., 1758) individuals from Pantelleria. This is a volcanic island in the Sicilian Channel. Of the collected individuals, 59.62% scored positive for DWV, with a mean abundance of 2.97 × 105 ± 1.46 × 106 copies per bee. Active replication of the virus could be demonstrated in all positive samples. All the sequences belonged to DWV type A. However both phylogenetic and pairwise distance analysis indicated a low similarity to Italian and Tunisian strains. Further studies are needed to elucidate the epidemiology of DWV in B. terrestris and the drivers of possible genetic modifications of the virus on Pantelleria island.
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