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(NAPPC), a tri-national coalition dedicated to promoting the health of all pollinators partners with different organizations to perform research for improving the health of honey bees and reversing the threats they face.
The Honeybee Health Improvement Project focuses on ways to help honeybees and beekeepers. In the absence of Colony Collapse Disorder, this task force will seek out and secure funding for innovative and important work to understand and promote genetic stock improvements, understand and promote best management practices for commercial beekeeping, and promote forage opportunities for colonies on public and private land. | Laurie Adams | Pollinator Partnership / NAPPC |
| May Berenbaum | University of Illinois |
| Nicholas Calderone | Cornell University |
| Dewey Caron | University of Delaware |
| Christine Elsik | Georgetown University |
| Wayne Esaias | Oceanographer |
| Diana Cox Foster | Pennsylvania State University |
| Christina Grozinger* | North Carolina State University |
| G.W. (Jerry) Hayes | Apiary Inspectors of America |
| Douglas Holy | USDA - Natural Resources Conservation Service |
| Eric Mussen | University of California, Davis |
| Jeff Pettis | Research Leader, USDA-ARS Bee Research Lab |
| Gene Robinson | Univsersity of Illinois |
| Colin Stewart | USDA APHIS PPQ |
| Barry H. Thompson* | Thompson Apiaries, LLC |
| Daniel Weaver* | Bee Weaver Apiaries, Inc. |
| Wayne Wehling *Co-Chairs |
USDA APHIS PPQ |
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2009 & 2010 NAPPC and The Swanson Foundation: Partnering for Honey Bee Health |
Picky Eaters and Poor Navigators: The Pesticide Imidacloprid Alters Honey Bee (Apis mellifera)
Sucrose Response Thresholds and Search Distance Estimation Daren M. Eiri and James C. Nieh In recent years, researchers have begun to focus on the sublethal effects of a popular class of pesticides, the neonicotinoids, which can act upon nicotinic acetylcholine receptors in the insect brain. These receptors are expressed in neurons that play a role in learning, memory, and visual processing, among other functions. A commonly used neonicotinoid pesticide, imidacloprid, can detrimentally affect honey bee learning and foraging flight activity, even at sublethal doses. We therefore studied the effects of imidacloprid on what foragers would feed on and how foragers navigated back to a rewarding food source. Our preliminary results show that nectar foragers become significantly pickier and have elevated sucrose response thresholds (would only feed on sweeter sugar solutions) one hour after treatment with sublethal doses of imidacloprid (0.216 or 2.16 ng/bee). Many natural nectar sources have low sugar concentrations. Thus, increased pickiness could limit the amount of nectar collected by a colony, creating a deficit in their only carbohydrate source. In bees that specialize on pollen foraging, sucrose response thresholds also increased, a trait that is associated with less pollen foraging. This could create shortfalls in the colony’s only protein source, contributing to a decline in brood development and colony health. Our preliminary results also show that imidacloprid affects distance estimation. Nectar foragers treated with the sublethal dose of 2.16 ng/bee searched for food in optic flow tunnels at significantly shorter distances. Such navigational errors could decrease the foraging efficiency of bees attempting to return to a rewarding food source. |
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2007 & 2008 NAPPC and Burt's Bees: Partnering for Honey Bee Health |
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The project of the Pollinator Partnership, is teaming up with bee-friendly, natural personal care company Burt’s Bees to address this environmental issue. Together, they are spearheading a campaign led by Burt’s Bees co-founder Burt Shavitz that will raise consumer awareness through PSA distribution, online marketing and consumer sampling efforts. NAPPC and Burt’s Bees will continue their partnership through research funding and a heightened awareness push later this year.
Click here to read the press release
Click here to view the Colony Collapse Disorder public service announcement
Effects of miticide and Fumagilin-B® on honey bee survivorship and immune responses
Catherine M Little, M.Sc. candidate, Acadia University
Western honey bees (Apis mellifera) are exposed to a number of parasites. Varroa destructor, Nosema apis, and N. ceranae have particularly detrimental effects on colony productivity and survival. We will measure honey bee immune responses to infection by each of these three species of parasites and the effects of co-infection. We will then compare the results of infection with the effects of miticide and Fumagilin-B® use on honey bee physiology. Quantification of immune trade-offs which occur during infection by multiple parasites and the effects of standard chemical treatments may enable us to determine infection threshold levels for effective use of chemical treatments, thereby reducing the risk of chemical resistance developing in either Varroa or NosemaWe will also determine if immune protein concentrations resulting from parasitic infection are predictive of honey bee survival, potentially leading to a means of assessing mortality risk during preparations for over-wintering honey bee colonies. (See Pictures Below)
An early look at participating colonies and over-wintering sites, March 2008
Little and Williams completing detailed colony condition assesments, May 2008
A promising sign: emerging new bees in spring, May 2008
Assessment of Sublethal Effects of Imidacloprid on Honey Bee and Colony Health. Galen P. Dively and Mike Embrey, Department of Entomology,University of Maryland
While the extent and causes of CCD are unknown, many believe that honey bees have reached a tipping point wherein the colony can no longer protect itself from a barrage of problems. The CCD Working Group developed an action plan of research that addresses four categories of factors that impact bee and colony health: 1) new or re-emerging pathogens; 2) bee pests; 3) environmental and nutritional stresses; and 4) pesticides. This project will address the latter category and examine the sublethal effects of pesticides, which is one of the priority areas identified by the HBHI Task Force for funding.
Nutritional Effects on Intestinal Health and Longevity of Honey bee Workers
Olav Rueppell, Dept. of Biology, University of North Carolina at Greensboro
This research project seeks to identify the effects of diet quality and malnutrition on the health of the honey bee worker intestine, as assessed by the activity of their intestinal stem cells. The intestinal epithelium is crucial to organismal health and it is one of the most exposed tissues in the animal body. Its cells are continuously replaced in a wide variety of organisms (Finch and Kirkwood 2000). Although early reports on proliferative cells in the intestine of insects exist (Snodgrass 1956), these cells have only recently been characterized as bona-fide stem cells in adults through molecular analyses in Drosophila (Micchelli and Perrimon 2006; Ohlstein and Spradling 2006). A certain level of cell proliferation is necessary to maintain a functional intestine, even in the adult insect. Thus, the activity of these cells has been linked to insect growth (Hakim et al. 2007) and they are responsive to toxin exposure (Loeb et al. 2001; Gregorc et al. 2004). Furthermore, their rate of cell proliferation is positively correlated with food quality (Zudaire et al. 2004). Thus, the proliferative activity of intestinal stem cells may be an indicator of malnutrition with direct relevance to bee health.
Diagnostic gene panel for honey bee breeding and disease management
Jay D. Evans and Yanping Chen, USDA-ARS Bee Research Laboratory
Honey bees face numerous challenges, from nutritional stress to dedicated parasites and
pathogens. A long-term goal of bee research is to develop and maintain honey bee lines
that are resistant to disease, and that thrive with a minimum of chemical treatment of
disease agents. New molecular-genetic tools can aid research on breedable traits, and,
ultimately, these tools could be used directly by commercial bee breeders or others in the private sector. Beekeepers also rely on disease indicators and established thresholds while making management decisions. Such decisions could also be helped by genetic indicators for pests and for bee health.
This gene panel would differ from previous entries into disease forensics (e.g.,
Evans, 2006) by including only the most informative markers, alongside reportable
diseases found in bee colonies. In so doing, the panel can be cheaply applied to bee
problems, and can also be ‘exported’ to future technologies for bee diagnostics and genetic research.
The Benefits of Propolis to the Immune System of Honey Bees
Marla Spivak, Dept Entomology, University of Minnesota
We have initiated a comprehensive line of research in my lab on the benefits of propolis collection to the immune system of honey bees. Propolis is a resin secreted by some plants that honey bees collect and deposit in the nest. Propolis has important antimicrobial value to humans, but its value to the bees is not known. Here I am requesting funds to test if colonies selectively bred for high- and lowpropolis collection differ in immune-related gene transcript levels. The applied goals of this research are to promote the natural immune defenses of honey bees and to promote the human use of propolis as an antimicrobial value-added product from the beehive.
Enabling genetic selection for resistance to viral pathogens: Developing a rapid and inexpensive cytometric method for screening honey bees for viral resistance. Dr. J. Spencer Johnston, Department of Entomology, Texas A&M University- Funded by Dr. Peter Swift, GDS Legacy Foundation and Reid and Margaret E. Dennis
Preliminary evidence suggests that honey bee strains are more resistant to IAPV than honey bee lines from other sources. We propose to use quantitative PCR, flow cytometry and direct monitoring of colony health to rapidly compare changes in blood cells number, pathogen titre and colony level response. We hypothesize that it will be possible to use flow cytometry to distinguish resistant bees from susceptible bees and evaluate the efficacy or extent of immune response to viral infection. If we are correct, then the results of the flow cytometry experiments could be used (in the place of more time consuming and expensive field trials) to quickly assess the presence or absence of viral resistance in aid of breeding programs to develop or propagate virus resistant honey bees. Perhaps more importantly, flow cytometry should reveal whether differential immune responses correlate with virus resistant phenotypes, offering clues to some mechanisms of viral resistance.
PODCAST: Click Here to hear an recent update of Johnston's HBH Project
Changes in hormonal and protein levels in honey bees that are experiencing migratory transportation. Zachary Huang, Department of Entomology, Michigan State University
Aside from pesticides, perhaps the strongest stress honey bees experience comes from
long distance transportation, commonly used for pollination purposes. For example, bees can transported from Maine to California, across four different time zones. No studies have ever been conducted to determine the physiological or behavioral changes induced by such stress. In this study, I propose to piggyback with Dr. Jeff Pettis’s group to obtain data on physiological changes in honey bees that are experiencing migratory transportation. The objectives of this study is to 1) measure changes in juvenile hormones in bees that are being transported from Florida to California, and 2) determine the protein nutrition of the same bees. Proper control will be obtained from bees which are staying in Florida.
Update 5/19/08: We are currently measuring the hormone levels in groups of bees in Bakersfield, CA and Boston, GA. We still have to thaw the bees and bleed them for the CA samples. We might do a third trial if we see something interesting.
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