Could A Mushroom Save The Honeybee? | KUOW News and Information

Could A Mushroom Save The Honeybee?

Aug 18, 2015
Originally published on August 17, 2015 2:17 pm

Honeybees need a healthy diet of pollen, nectar and water. But at a bee laboratory in Eastern Washington, Steve Sheppard fills their feeding tubes with murky brown liquid from the forest.

His bees are getting a healthy dose of mushroom juice.

“If this does what we hope, it will be truly revolutionary,” said Sheppard, who heads the Department of Entomology at Washington State University. “Beekeepers are running out of options.”

Commercial honeybees, which pollinate $15 billion worth of crops in the United States annually, have teetered on the brink of collapse for nearly a decade. A third of all bee colonies have died each year since 2006, on average, according to the U.S. Department of Agriculture.

Scientists say the mysterious phenomenon, known as colony collapse disorder, may be the result of at least 60 environmental factors that combine to cripple honeybees — including pesticides, disease, malnutrition, loss of habitat and climate change.

WATCH: Could The Mushroom Save The Honeybee?

Like a pancake 'feeding on you'

Beekeepers, however, say the honeybee’s single greatest threat is a virus-carrying parasite called the varroa mite.

Sheppard has spent decades breeding western honeybees to better tolerate the mite and its viruses. But he hasn’t had much success, he said.

Varroa mites have devastated U.S. beehives since the late 1980s, when they arrived here from Asia. In 1996, half of colonies east of the Mississippi River died due to mite infestations.

The reddish-brown pests, which are no bigger than the head of a pin, invade colonies and multiply rapidly. They hide among bee larvae developing in the honeycomb, feed on infant bee blood and lay several eggs each.

“It would be like having something the size of pancake feeding on you,” Sheppard said.

Honeybees that emerge from the infected hives typically carry illnesses, like a virus that results in deformed wings that prevent bees from flying.

If beekeepers don’t intervene, the varroa mite can destroy a colony in less than two years. Meanwhile, the pest reproduces so rapidly it builds resistance to chemical pesticides more quickly than solutions can be invented, Sheppard said.

That’s why he decided to try an unconventional approach last year, after local mushroom expert Paul Stamets called him with an idea to help arm the honeybee in its fight against the mite.

Learning the way of the bee

“We've gone to the moon, we've gone to Mars, but we don't know the way of the bee?” asked Stamets, who owns the medicinal mushroom company Fungi Perfecti near Olympia, Washington.

WATCH: Paul Stamets give a TED Talk:

The self-taught mycologist said he noticed a relationship between honeybees and mushrooms when he observed bees sipping on sugar-rich fungal roots growing in his backyard.

Killing parasites without harming bees

Paul Stamets thinks his version of the fungus will be more effective. So far, the results of the experiments in Sheppard’s lab look promising.

"The product seems to be killing mites without harming bees," Sheppard said.

This fall, the scientists plan to expand both experiments by partnering with commercial beekeepers like Eric Olson, who runs the largest commercial beekeeping operation in Washington.

Olson said two-thirds of his beehives died five years ago because of a varroa mite infestation. After several years successfully controlling the pest, he arrived this year in California for almond pollination season and nearly half of his bees had died during the winter.

He spent $770,000 to buy replacement hives, he said.

“I was lucky that I had the cash and the connections to recover from that,” he said.

Olson recently donated about $50,000 to Sheppard’s department to help find a solution to the mite. Looking at the bees in one of his hives, he said, “I’m really concerned about whether these little girls will survive.”

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