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J Gen Virol 90 (2009), 463-467; DOI 10.1099/vir.0.005579-0

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Short Communication

Deformed wing virus: replication and viral load in mites (Varroa destructor)

Sebastian Gisder1, Pia Aumeier2 and Elke Genersch1

1 Institute for Bee Research, Friedrich-Engels-Str. 32, D-16540 Hohen Neuendorf, Germany
2 Faculty for Biology and Biotechnology, Ruhr University Bochum, Bochum, Germany

Correspondence
Elke Genersch
elke.genersch{at}rz.hu-berlin.de

Deformed wing virus (DWV) normally causes covert infections but can have devastating effects on bees by inducing morphological deformity or even death when transmitted by the ectoparasitic mite Varroa destructor. In order to determine the role of V. destructor in the development of crippled wings, we analysed individual mites for the presence and replication of DWV. The results supported the correlation between viral replication in mites and morphologically deformed bees. Quantification of viral genome equivalents revealed that mites capable of inducing an overt DWV infection contained 1010–1012 genome equivalents per mite. In contrast, mites which could not induce crippled wings contained a maximum of only 108 viral genome equivalents per mite. We conclude that the development of crippled wings not only depends on DWV transmission by V. destructor but also on viral replication in V. destructor and on the DWV titre in the parasitizing mites.




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A. C. Highfield, A. El Nagar, L. C. M. Mackinder, L. M.-L. J. Noel, M. J. Hall, S. J. Martin, and D. C. Schroeder
Deformed Wing Virus Implicated in Overwintering Honeybee Colony Losses
Appl. Envir. Microbiol., November 15, 2009; 75(22): 7212 - 7220.
[Abstract] [Full Text] [PDF]


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