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A Comparison of Deformed Wing Virus in Deformed and Asymptomatic Honey Bees

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Brettell, Laura and Mordecai, Gideon and Schroeder, Declan and Jones, Ian and da Silva, Jessica and Vicente Rubiano, Marina and Martin, Stephen (2017) A Comparison of Deformed Wing Virus in Deformed and Asymptomatic Honey Bees. Insects, 8 (1). p. 28. ISSN 2075-4450

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Official URL: https://doi.org/10.3390/insects8010028




Abstract

Deformed wing virus (DWV) in association with Varroa destructor is currently attributed to being responsible for colony collapse in the western honey bee (Apis mellifera). The appearance of deformed individuals within an infested colony has long been associated with colony losses. However, it is unknown why only a fraction of DWV positive bees develop deformed wings. This study concerns two small studies comparing deformed and non-deformed bees. In Brazil, asymptomatic bees (no wing deformity) that had been parasitised by Varroa as pupae had higher DWV loads than non-parasitised bees. However, we found no greater bilateral asymmetry in wing morphology due to DWV titres or parasitisation. As expected, using RT-qPCR, deformed bees were found to contain the highest viral loads. In a separate study, next generation sequencing (NGS) was applied to compare the entire DWV genomes from paired symptomatic and asymptomatic bees from three colonies on two different Hawaiian islands. This revealed no consistent differences between DWV genomes from deformed or asymptomatic bees, with the greatest variation seen between locations, not phenotypes. All samples, except one, were dominated by DWV type A. This small-scale study suggests that there is no unique genetic variant associated with wing deformity; but that many DWV variants have the potential to cause deformity.


Item Type:Article
Uncontrolled Keywords:deformed wing virus; honeybee; Varroa; next generation sequencing; RTPCR
Subjects:Medical sciences > Veterinary > Feral and exotic animals
Medical sciences > Veterinary > Microbiology
ID Code:65041
Deposited On:22 Apr 2021 14:23
Last Modified:23 Apr 2021 07:53

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