Researchers use 'mini tanning beds' to treat white-nose syndrome in bats

The Achilles' heelof the fungus thatis killing millions of hibernating bats in North Americacould beas closeas the localtanning salon.

Researchers in Madison, Wis.have found that the ultraviolet lightworshippedby tanning enthusiastsalso damagesthe fungus that causes white-nose syndrome.

White-nose syndrome has not been detected in bats in British Columbia, but officials are anxious about the spread of the disease, which was detected in neighbouring Washington statein 2016.

"What we found is UV light damages the DNA of this fungus," researcher DanielLindner, told On the Island's Gregor Craigie.

Lindner, a research plant pathologist with the U.S. Department of Agriculture in Madison,saidUV light will damage any living organism.

"This is what happens to us when we get sunburnt. Some of our skin cells die fromUVBexposure," he said.

However, the study, published in January, found the fungus thatcauses white-nose syndrome isfar more sensitive to UV exposure than anything else theytested, including bats and the microbiome of beneficial bacteria and fungi that live on the bats.

Mini tanning beds for bats

With the identification of a potential Achilles' heelfor the fungus, researchers devised a method to test UV light therapyon bats in the laboratory, sothe results and the effect on the animals' health could be closely monitored.

"It's been referred to as mini tanning beds for bats," Lindner said. "That's very impractical in the field, obviously."

For field testing, the researchershope to work with bat behaviour specialists and engineering experts to explore the possibility of installing a UV light-emitting tunnel or ring at the entrances to hibernacula places where large numbers of bats hibernate.

Lindner said the researchers foundit takes only one second of UV exposure to damage the fungus.

"If we can hit them with even a fractional dose of it as they come and go, we hope that would be enough to knock back the fungus and make it so they could make it through the hibernation season," he said.

Lindnerdoes not see UV light exposure as a magic bullet for stopping white-nose syndrome.

"We've got such a large area with so many bats affected that we need very many tools in our tool box and we hope this is one tool that we can use to try and help prevent extinction," he said.

While white-nose syndrome has not been found yet in British Columbia, officials with the B.C. Community Bat Programare asking the public to report bats that are seen flying during the day, or are found deadduring winter and early spring.

With files from Sterling Eyfordand CBC Radio's On the Island.