Comparing Survival of Israeli Acute Paralysis Virus Infection among Stocks of U.S. Honey Bees
Open Access
- 12 January 2021
- Vol. 12 (1), 60
- https://doi.org/10.3390/insects12010060
Abstract
Among numerous viruses that infect honey bees (Apis mellifera), Israeli acute paralysis virus (IAPV) can be linked to severe honey bee health problems. Breeding for virus resistance may improve honey bee health. To evaluate the potential for this approach, we compared the survival of IAPV infection among stocks from the U.S. We complemented the survival analysis with a survey of existing viruses in these stocks and assessing constitutive and induced expression of immune genes. Worker offspring from selected queens in a common apiary were inoculated with IAPV by topical applications after emergence to assess subsequent survival. Differences among stocks were small compared to variation within stocks, indicating the potential for improving honey bee survival of virus infections in all stocks. A positive relation between worker survival and virus load among stocks further suggested that honey bees may be able to adapt to better cope with viruses, while our molecular studies indicate that toll-6 may be related to survival differences among virus-infected worker bees. Together, these findings highlight the importance of viruses in queen breeding operations and provide a promising starting point for the quest to improve honey bee health by selectively breeding stock to be better able to survive virus infections.Keywords
Funding Information
- Animal and Plant Health Inspection Service (17-8130-0636-CA, 18-8130-0636-CA)
- Project Apis m. (Health Hives 2020)
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