Major bid to beat honey bee killer the Varroa mite

A MAJOR investment from public and private sector organisations is helping scientists to develop new ways of tackling the biggest killer of honey bees worldwide – the bloodsucking Varroa destructor mite.

Researchers from the University of Aberdeen and the National Bee Unit, part of the Food and Environment Research Agency (Fera), have worked out how to knock down genes in the parasitic mite, causing it to die.

So far the work has only been done in the lab but now the team can take their work a step closer towards developing a product that could help beekeepers, thanks to funding worth more than �250,000 from the Biotechnology and Biological Sciences Research Council and Vita Europe.

Alan Bowman, who is heading the research, said: “Honey bees are incredibly important because of their pollination of flowers of both wild and farmed plants.

“But their numbers are seriously declining year on year and while there are probably several reasons for this, one of the most important factors is Varroa destructor, that sucks the blood from bees and transmits serious viral diseases.

“There is an urgent need to develop a varroa-specific, environmentally friendly treatment or some method of overcoming the varroa’s resistance mechanism to existing treatments and that’s what we are now working towards.”

Max Watkins, technical director of Vita (Europe), which is based in Britain, said: “Finding treatments that kill varroa mites, but don’t harm honey bees, bee products or the environment is not easy.

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“The challenge is heightened because the relatively short life cycle of the varroa mite means that resistance to a single treatment can often develop quite quickly unless beekeepers alternate treatments of different types.

“Vita is therefore supporting this exciting and innovative research and hopes that an effective and environmentally sensitive treatment can eventually be developed at a cost that is affordable to beekeepers across the globe.”

Giles Budge, from the National Bee Unit at Fera, added: “It is particularly exciting to see our work move from the bench into products which could become commercially available to help beekeepers.”

Dr Bowman added: “We rely on honey bees to pollinate our crops and add variety to our diets, which is why there is a real need to tackle the problem of their decline.”