UM

UM researchers, others close in on cause of bee collapse

2013-07-12T20:45:00Z 2014-10-10T06:02:58Z UM researchers, others close in on cause of bee collapse missoulian.com

The bees swarm in the morning heat, their buzz pouring from boxes stacked on Mount Sentinel. Numbering in the thousands, they’re warming up for their morning quest for pollen.

These docile honeybees are players in a national mystery, helping researches at the University of Montana determine what’s killing colonies like theirs across the country. After years of work, the team of sleuths is close to isolating at least one cause of Colony Collapse Disorder and proving it with scientific certainty.

“We still think it’s a pathogen – a concurring infection of at least two different organisms that cause colony collapse, and they all happen to infect the intestines of the bees,” said Colin Henderson, a project research manager at Bee Alert Technology and a professor at Missoula College. “We’ve done whole-colony experiments on this, and it works every time.”

Henderson was called to a national stakeholders meeting in Virginia last October by the U.S. Department of Agriculture. The meeting brought together more than 100 interested parties, from Dow AgroSciences to the Almond Board of California.

During the conference, stakeholders broke into four expert groups to cover pesticides, nutrition, pathogens and genetics. The USDA released its findings in May, summarizing the latest theories and research on colony collapse. The paper outlined steps needed to restore honeybees, along with the $20 billion agricultural industry that relies upon the insects’ pollination services.

Henderson said the issues discussed at the meeting were many, and they may be equally hard to resolve. They range from the practice of transporting bees across vast geographic regions to pollinate various crops, to loss of forage.

Poor nutrition also may be part of the problem, a possible result of today’s agricultural practices, including no-till farming and massive fields of single crops.

“Hybrid corns aren’t bred for seed production, but for grain production, and hybrid corn pollen is pretty sterile,” Henderson said. “In the Midwest, we found bees were going out of their way to avoid corn pollen to find other things, so nutrition is an issue.”

Climate change, urbanization and managed habitats remain suspect as well, as do pesticide use, genetic diversity, handling practices and parasites.

***

But Henderson, along with lead UM bee researcher and Bee Alert president Jerry Bromenshenk, believes disease remains the primary suspect.

With an eye on the cause, the research team is racing to isolate the culprit – along with technology to alert beekeepers to problems early on, including acoustic tools to measure the frequency spectrum of a hive.

“We’re convinced more of a pathogen – a disease base for CCD,” Henderson said. “We’re doing more experiments now and setting them up. It’s both exciting and frustrating.”

The UM program has worked with the Department of Defense in using bees to detect explosives and land mines. It also has teamed up with the Edgewood Chemical and Biological Center – part of the Army Research, Development and Engineering Command – to find ways of detecting new and previously unknown biological agents.

Along the way, researchers discovered that a particular virus and parasite appeared in nearly every case of colony collapse. They conducted additional lab work and found they could infect bees to create the same phenomenon in a controlled setting.

“We’ve done lab infections with it and it works, and we’ve done captive colony infections in a closed environment, and it works,” Henderson said. “We’re doing three flying colonies this summer.

“If we can take the dead bees and isolate the organisms again, then we’ve identified at least one source of colony collapse. We’ve really come a long ways.”

Standing amid the working bees on Mount Sentinel, Henderson explains Cox’s theorem and how it relates to research. If the progress of their own work were measured on a clock, Henderson believes they’d be in the 11th hour, and they’re very close to proving that a one-two viral-parasitic punch is behind the honeybee decline.

“We got involved with Colony Collapse Disorder when it first broke in 2006,” said Henderson. “That’s taken us down a long road of finding what might be wrong, and we’re still working on that problem.”

Reporter Martin Kidston can be reached at 523-5260, or at martin.kidston@missoulian.com.

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(4) Comments

  1. Roger
    Report Abuse
    Roger - July 13, 2013 11:46 am
    Although the Missoulian refers to honeybees as "docile" or "harmless", the worker bees, which are all female, can and will sting, especially if their nest is threatened.
  2. BJG1
    Report Abuse
    BJG1 - July 13, 2013 9:21 am
    You know I read this article over twice, and it says nothing about wasps. I do agree that wasps are a bother, but then sometimes so are humans. What I dislike most are the colony of ants that bite when humans are trying to disrupt their colonies. Interesting about the GMO information as we all know GMO products are not healthy for humans and now bees. Keep up the research, as we know "no pollination no food."
  3. Deadwolf
    Report Abuse
    Deadwolf - July 13, 2013 8:14 am
    I agree MM, the wasps, yellow jackets and bald-faced hornets are the worst I have seen. I'll bet the mites are a carrier of the bee disease (CCD). Another factor is Genetically Modified Organisms (GMO). These crops (corn, tomatoes, grains, and other veggies) are no place for honey bees. Combine that with an environment polluted by the junk (including pesticides & herbicides) put in the atmosphere (not CO2). So, disease spread by parasites (transmission aided by those who truck the bee all over the country), GMO's, loss of forage, and a polluted atmosphere, the honey bee has an uphill fight.I have relatives who have raised a few hives for the past 60 years. They never had any major problems until about the last ten years.
  4. montanamuralist
    Report Abuse
    montanamuralist - July 13, 2013 7:38 am
    I don't know about anyone else, but I wish a pathogen would hit all the wasps I have this year ( and last for that matter. I have noticed the decline in honey bees the last few years although I have a few. Nothing like I did when first moving to the country 15 years ago east of Missoula. Now, the wasps are horrendous and everywhere. I understand all species have a place in our ecosystem and wasps are carnivores but they are really on the upswing compared to the bees.
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