Control

The use of antibiotics is not permitted in Switzerland; moreover, no other medication exists to combat European foul brood. Hives with symptoms must therefore be destroyed in order to limit the outbreak, and the contaminated material must be sanitised. Since prevention is the best cure, early detection is desirable. Numerous studies have been undertaken and documents have been created at the Swiss Bee Research Centre and elsewhere to draw the attention of beekeepers to these problems and inform them about the causes and the control measures to be implemented.

Merkblatt zur erkennung von Bienenbrutkrankheiten (German (PDF, 357 kB, 18.10.2017) and French (PDF, 226 kB, 02.02.2017))
M. Tschumi (2011)

Two quantitative trait loci are associated with recapping of Varroa destructor-infested brood cells in Apis mellifera mellifera.

Institutional Repository Agroscope

Guichard M., Dainat B., Eynard S., Vignal A., Servin B., The Beestrong Consortium, Neuditschko M.

Two quantitative trait loci are associated with recapping of Varroa destructor-infested brood cells in Apis mellifera mellifera.

Animal Genetics, 53, (1), 2022, 156-160.

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Abstract:

Recapping of Varroa destructor-infested brood cells is a trait that has recently attracted interest in honey bee breeding to select mite-resistant Apis mellifera colonies. To investigate the genetic architecture of this trait, we evaluated a sample of A. mellifera mellifera colonies (N = 155) from Switzerland and France and performed a genome-wide association study, using a pool of 500 workers per colony for next-generation sequencing. The results revealed that two QTL were significantly (P < 0.05) associated with recapping of V. destructor-infested brood cells. The best-associated QTL is located on chromosome 5 in a region previously found to be associated with grooming behaviour, a resistance trait against V. destructor, in A. mellifera and Apis cerana. The second best-associated QTL is located on chromosome 4 in an intron of the Dscam gene, which is involved in neuronal wiring. Previous research demonstrated that genes involved in neuronal wiring are associated with recapping and varroa sensitive hygiene. Therefore, our study confirms the role of a gene region on chromosome 5 in social immunity and simultaneously provides novel insights into genetic interactions between common mite resistance traits in honey bees.

ISSN Print: 0268-9146
ISSN Online: 1365-2052
Digital Object Identifier (DOI): https://doi.org/10.1111/age.13150
Publication-ID (Web Code): 47726 Sending by e-mail

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Two quantitative trait loci are associated with recapping of Varroa destructor-infested brood cells in Apis mellifera mellifera.