Chemical puts extra bite in search for midge repellent

• Midge-bite misery may be at an end for thousands of victims

• University researchers pinpoint 'anti-midge attraction' chemical

• Tests to be conducted by brave volunteers this summer

Key quote

"We can identify exactly which chemicals the insects respond to."

- James Logan, of Rothamsted Research

Story in full THE lucky few who are immune to midge bites are providing scientists with the formula for an insect repellent for all.

Researchers at Aberdeen University have pinpointed a chemical produced by the body which masks a person’s attractiveness to midges.

They will carry out further tests on volunteers in the Highlands this summer, in the next step towards developing a natural, odourless weapon in the battle against the insect, the bane of tourists and outdoor workers.

James Logan, of Rothamsted Research, the university’s project partner, which is based in Hertfordshire, said: "We can identify exactly which chemicals the insects respond to."

Dr Nicola Seal, one of the Aberdeen researchers, said the chemical produced by the few people who are unaffected by midges tricks the insects into thinking they are unsuitable targets.

Other people are bitten to greatly varying extents.

The project, which is being funded by Scottish Enterprise and was discussed at the Society for Experimental Biology conference in Edinburgh yesterday, could lead to a commercial product in five years’ time.