The Bees Have It!

Bug Squad    By Cathy Keatley Garvey  May 29, 2015

If you missed the first-ever UC Davis Bee Symposium on keeping bees healthy, not to worry

The event, hosted May 9 in the Robert Mondavi Institute for Wine and Food Science by the Honey and Pollination Centerand the UC Davis Department of Entomology and Nematology, drew some 360 people.

Entomology doctoral candidate Matthew Prebus of the Phil Ward lab, UC Davis Department of Entomology and Nematology, video-recorded the presentations and uploaded them today.

You can watch them on YouTube.

Amina Harris, director of the Honey and Pollination Center, and Michael Parrella, professor and chair of the UC Davis Department of Entomology, welcomed the crowd.

Marla Spivak, Distinguished McKnight Professor, University of Minnesota and a 2010 MacArthur Fellow, keynoted the symposium, speaking on "Helping Bees Stand on Their Own Six Feet."

The presentations on YouTube:

Marla Spivak: Protecting Pollinators

Amy Toth: Combined Effects of Viruses and Nutritional Stress on Honey Bee Health

Elina Niño: Best Management Practices to Support Honey Bee Health

Neal Williams: Enhancing Forage for Bees

Sarah Laird: The Bee Girl

Jake Reisdorf: Getting into Beekeeping- Thoughts from a 12-year-old Beekeeper

Katharina Ullman: Project Integrated Crop Pollination

John Miller: Keeping Bees Healthy with Forage

Benjamin Sallman: Bee Informed Partnership

Gretchen LeBuhn: The Giant Sunflower Project

Christine Casey: Introduction to the Häagen Dazs Honey Bee Haven

The Henry J. Kaiser Family Foundation generously provided funding.

Upcoming blog: Who won the student poster competition at the symposium and with what topics?

Marla Spivak: To Grasp Our Bees' Flight and Prospects, Stay Focused On Food

MINNPOST   By Ron Meador    March 11, 2015

Ron Meador posed audience questions to Marla Spivak during the Q&A session of her "Pollinators in Peril"
presentation. MINNPOST photo by Andrew Wallmeyer

As I listened to Marla Spivak discuss the plight and prospects of our honeybees on Monday evening, it occurred to me that I was watching a masterful application of Albert Einstein’s principle that complex matters should be made as simple as possible – but not simpler.

Most of us have grasped by now that honeybees are under pressure from multiple sources, with certain insecticides, habitat loss, parasites and disease in the leading roles. But great argument continues over how to weigh their contributions:

  • Commercial beekeepers assign most of the blame to neoicotinoid insecticides, a new type of systemic bug-killer whose surge in U.S. market share roughly coincided with the appearance of hive-emptying “colony collapse disorder” in 2006.
  • Neonics’ manufacturers, vendors and applicators of course want to fix the fault elsewhere, and typically prefer the parasitic varroa mites – a problem, after all, that can be addressed by buying and applying a miticide.
  • Many an entomologist and environmentalist emphasizes the role of habitat loss, the conversion of wild land into row crops, parking lots, golf courses and residential lawns that, for a flower-seeking honeybee, are more barren than a desertscape.

Spivak, who holds a McKnight professorship in entomology at the University of Minnesota and directs the Bee Lab there, knows as much about these matters as anyone. And her opinions are more influential than most.

To gauge her authority, you could try a Google search on, say, her name plus “bees” or “pollinators.” I did that on Sunday and came up with more than 11,000 hits across a wide variety of news, policy, university and government sites.

Why food is at the center

From Spivak’s perspective, all of these contending views are partly right and partly wrong. She feels that if you really want to understand what’s going on with bees – and what can be done to help them – you have to keep your focus on the food.

Here’s the reasoning she laid out at a special MinnPost Earth Journal event at Hell’s Kitchen in downtown Minneapolis:

For starters, the notion that bees are dying off in just one way – the way labeled “colony collapse disorder,” with bees suddenly vacating their hives en masse, never to return – is outmoded.

National surveys made since the initial appearance of CCD in 2006 and 2007 have now established that “actually, a very small proportion of colonies that are dying are dying from those particular symptoms.”

It happens – but the majority of colonies are dying for many, many reasons. From the mites, from bad nutrition, from not enough honey, from pesticides. ... Surprisingly few are being killed only by pesticides, really, but from diseases and pests and all of the interactions that seem to be happening.

Still, the overall losses continue at levels that most commercial beekeepers consider financially unsustainable: 30 percent of hives, or more, in some recent years, with a slight improvement last year. And most of these pressure factors, if not all of them, could be offset to some degree by a better supply of clean and convenient food, which for bees consists entirely of flower products.

The protein part would be pollen, and the carbohydrate part would be the nectar. ... That’s all they eat. They get all of their nutritional requirements from that, and nutrition is at the base of everything.

So when bees have good nutrition, they’re actually able to detoxify pesticides. ... Their immune systems are bolstered ... and they can fight off diseases. 

Unfortunately, what we’re giving bees in place of flowering fields is corn planted on every available acre, plus some soybeans. Neither crop is useful to bees.

Of course, corn sheds a lot of pollen for a short time in August when it’s tasselling, and bees do collect corn pollen, but it’s not very nutritious for them – it’s a wind-pollinated plant, and of course bees prefer plants that need an animal to move their pollen from flower to flower.

On top of that, in our cities we have huge expanses of lawns – another flowerless landscape which nobody may ever play on or even walk on, except for the guy who’s maintaining the lawn with the power mower, the herbicides, the pesticides, the fertilizers.  

Not one pesticide problem but many

Addressing indirectly the calls to ban neonicotinoids, said that analysis of pesticide residues in bee-gathered pollen is showing neonics “very rarely – but you find everything else.”

And the other thing we need to understand about our insecticides is that – let me put it this way: If you go to the pharmacy, or if you take an aspirin, any drug for yourself, the active ingredient will be labeled, and the inert ingredients will be labeled.

If you go to a pesticide label, only the active ingredient will be there. The inert ingredients are all proprietary information, they’re not revealed, and some of these, quote, inactive ingredients are actually more toxic than the active ingredient.

Genetically modified crops aren’t a problem per se for bees, Spivak said, but their widespread use has driven a massive increase in herbicide applications. No direct toxicity, again, but a major hit to habitat.

We grow Roundup-ready plants, which allows us to apply a lot of herbicide to kill of all the weedy flowers in the field without killing the crop. But many of those weedy plants have flowers that bees depend on for their food, and so the dramatic increase in herbicides is killing off the food for bees in many locations.

All in all, Spivak said, she agrees with the assessment of a commercial beekeeper in North Dakota who said, “ ‘Honeybees, wild bees and other pollinators are reduced to feeding on scraps.’ It’s a very sad state of affairs, and that sums it up very well.”

As for possible solutions, Spivak offered these thoughts:

  • Bee lawns are a hot new topic for her researchers, offering the possibility of mowable green carpets surrounding our homes that still offer some flowering forage. Certain fescues, better adapted to northern climates anyway, could replace Kentucky bluegrass with grasses that bloom a bit and require less maintenance. Restoring Dutch clover and other ground covers that used to be more common is another possibility to be investigated.
  • Bee-friendly buffers along roadways, Spivak said, would be “the most amazing thing we can do” to create large areas of new forage in a hurry, and other states – including Iowa – have gained some experience we can learn from. It’s a good idea, too, to take bees’ foraging needs into account in other types of public-lands restoration.

(I asked Spivak for her thoughts on questions raised, last time I wrote about this, by Earth Journal readers concerned that roadside foraging would result in a lot of road-killed bees; she smiled. Bees don’t cross the road if they don’t have to, she said, so the key is to plant a lot of habitat, and maybe make the buffer wide enough so the best forage can be away from the highest concentrations of exhaust.)

  • Bee-friendly residential gardens are already a popular initiative, Spivak said, but there’s room for a more organized collection and sharing of information resources.

 Planting for pollinators is a new thing. We’ve had butterfly gardens, we’ve had rain gardens, and we’ve had programs to help people build these, but we don’t have pollinator-garden recommendations. We know that most of our native perennials will be good for native bees and honeybees, and we know that some of our annual bedding plants are not at all attractive to bees.

In the meantime, she advises gardeners to spend some time hanging around the nursery, watching to see which plants the bees linger on – then buy those.

  • Bee chow on the way? As both commercial and backyard beekeepers have turned to supplementary feeding to make up for scarce foraging territory, she said, much has been learned about what works well and what doesn’t. High-fructose corn syrup, for example turns out to be lacking in certain necessary nutrients found in nectar.

Because of the bee die-offs that we’re seeing, many researchers are saying, let’s give them things that are more aligned with what bees eat naturally. In fact, Purina just  put out a big job description – they’re looking for a researcher to study a better bee food, derived more from plant pollen and other plant ingredients. This is going to happen, and it’s going to happen fairly soon.

On the pesticide front, Spivak noted that federal regulators continue to gather evidence – some from her Bee Lab researchers – as they proceed toward a decision on re-registering neonics a few years from now. And she thinks it would be sensible to begin requiring disclosure of all toxic compounds in a pesticide, whether considered active or not.

But the prospects for a sea change are slim. And she’s OK with that.

Pesticides aren’t going away, that’s just reality. But we can have both pesticides and pollinators, and we’re going to have both.

We can do this. I know we can.

Read at:

Keeping Bees Healthy: Bee Symposium on May 9th at UC Davis Center

Bug Squad    By Kathy Keatley Garvey   January 16, 2015

Distinguished McKnight Professor and 2010 MacArthur Fellow Marla Spivak of the University of Minnesota, will keynote a University of California, Davis symposium on ”Keeping Bees Healthy," hosted May 9 by the UC Davis Honey and Pollination Center and the UC Davis Department of Entomology and Nematology.

Spivak will speak on "Helping Bees Stand on Their Own Six Feet." The symposium, set for m 8 a.m. to 6:30 p.m., will take place in the UC Davis Conference Center on Alumni Drive.

“This educational program is designed for beekeepers of all experience levels, including gardeners, farmers and anyone interested in the world of pollination and bees...


Update: 2/4/15: If you're planning to attend the #ucdavis bee symposium featuring Marla Spivak, you ought to hurry. Just head that tickets are going fast. Student tickets discounted. 

Webinar: Responding to an S.O.S. from the Commercial Beekeeping Industry

Marla Spivak, University of Minnesota

Tuesday April 22, 2014

10 am (PT) 12 pm (CT) / 1 pm (ET)


Given the chronic health problems facing honey bees and the increasing demand for pollination services from growers, commercial beekeepers and breeders have requested assistance in maintaining healthy colonies. To this end, we began a novel “Bee Tech Transfer Team” program through the Bee Informed Partnership, a 5-year grant funded by USDA-NIFA. These teams consist of independent beekeepers that provide on-the-ground services to commercial beekeepers to assess and record colony health information; survey beekeepers about management; test for bee diseases and parasites; and assist in breeding bees that are more resistant to diseases and parasites. There is demand for this program nationwide and we are exploring ways to ensure that the Tech Team services are economically sustainable after the funding ends in 2016. As bees are directly or indirectly responsible for 35% of our diet through their pollination services, it is critical to increase efforts to keep bees healthy and to provide hands-on assistance to the beleaguered beekeeping industry throughout the U.S.

To register for this FREE upcoming webinar go to:

Marla Spivak: Why Bees Are Disappearing!

Filmed June 2013   Posted on TEDGlobal  9/20/13

Honeybees have thrived for 50 million years, each colony 40 to 50,000 individuals coordinated in amazing harmony. So why, seven years ago, did colonies start dying en masse? Marla Spivak reveals four reasons which are interacting with tragic consequences. This is not simply a problem because bees pollinate a third of the world’s crops. Could this incredible species be holding up a mirror for us?

Marla Spivak researches bees’ behavior and biology in an effort to preserve this threatened, but ecologically essential, insect. Full bio »