Survey: More than 40 percent of bee hives died in past year

Credit: Lilla Frerichs/public domain

More than two out of five American honeybee colonies died in the past year, and surprisingly the worst die-off was in the summer, according to a federal survey.

Since April 2014, beekeepers lost 42.1 percent of their colonies, the second highest loss rate in nine years, according to an annual survey conducted by a bee partnership that includes the U.S. Department of Agriculture.

"What we're seeing with this bee problem is just a loud signal that there's some bad things happening with our agro-ecosystems," said study co-author Keith Delaplane at the University of Georgia. "We just happen to notice it with the honeybee because they are so easy to count."

But it's not quite as dire as it sounds. That's because after a colony dies, beekeepers then split their surviving colonies, start new ones, and the numbers go back up again, said Delaplane and study co-author Dennis vanEngelsdorp of the University of Maryland.

What shocked the entomologists is that is the first time they've noticed bees dying more in the summer than the winter, said vanEngelsdorp said. The survey found beekeepers lost 27.4 percent of their colonies this summer. That's up from 19.8 percent the previous summer.

Seeing massive colony losses in summer is like seeing "a higher rate of flu deaths in the summer than winter," vanEngelsdorp said. "You just don't expect colonies to die at this rate in the summer."

Oklahoma, Illinois, Iowa, Delaware, Maryland, Pennsylvania, Maine and Wisconsin all saw more than 60 percent of their hives die since April 2014, according to the survey.

Nation's beekeepers lost 40 percent of bees in 2014-15
"Annual and Winter Honey Bee Loss by Year" graph. Credit: Bee Informed Partnership/University of Maryland/Loretta Kuo

"Most of the major commercial beekeepers get a dark panicked look in their eyes when they discuss these losses and what it means to their businesses," said Pennsylvania State University entomology professor Diana Cox-Foster. She wasn't part of the study, but praised it.

Delaplane and vanEngelsdorp said a combination of mites, poor nutrition and pesticides are to blame for the bee deaths. USDA bee scientist Jeff Pettis said last summer's large die-off included unusual queen loss and seemed worse in colonies that moved more.

Nation's beekeepers lost 40 percent of bees in 2014-15
This map shows "2014-2015 Honey Bee Colony Loss by State." Credit: Bee Informed Partnership/University of Maryland/Loretta Kuo

Dick Rogers, chief beekeeper for pesticide-maker Bayer, said the loss figure is "not unusual at all" and said the survey shows an end result of more colonies now than before: 2.74 million hives in 2015, up from 2.64 million in 2014.

That doesn't mean bee health is improving or stable, vanEngelsdorp said. After they lose colonies, beekeepers are splitting their surviving hives to recover their losses, pushing the bees to their limits, Delaplane said.

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User comments

May 13, 2015
More pollutants!

More money for Monsanto!

May 13, 2015
Everything ends one day, even Humanity.

Glyphosate use map
and compare it to map of the dying of the bees.

Killing the bees is just one step on the Ladder of the death of humanity.

May 13, 2015
Yeah, but it is for PROFITS!

That makes everything okay!

May 13, 2015
Very nice photo on the article- but its not a honeybee...

May 13, 2015
put more insecticide genes in our food crops! Kill everything!

May 13, 2015
Consumers need to get educated about their food and become willing to pay more for it. We pay a ridiculously cheap price for food because of the widespread use of pesticides, herbicides, and GMO. It's worth the extra cost to support organic and non-GMO crops... the food is better for us and the crops are better for the environment as a whole.

May 14, 2015
Consumers need to get educated about their food and become willing to pay more for it.

I agree the average consumer's appalling lack of food education needs addressing, and in some ways I think it is starting to happen.

But coming from a rural family line, I can assure you that farmers get a pittance for their crops. This doesn't exactly give them the means to implement better land and crop care.

The overwhelming majority of the money is made by multiple layers of wasteful middlemen. Reform across the food chain, not paying more for food is what has been sorely needed for decades. If only there was political will!

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