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Bee Colony Collapse Disorder: New Bait Lures Varroa Mite To Its Doom

Date:
July 15, 2009
Source:
USDA/Agricultural Research Service
Summary:
Varroa mites, prime suspect in bee colony collapse disorder, could literally be walking into a trap --- thanks to a newly developed attractant.

Deadly parasitic Varroa mite on the back of a honey bee. Scientists have developed a new bait that may help control varroa mites, the top pest of honey bees.
Credit: Scott Bauer

Varroa mites could literally be walking into a trap—thanks to a new attractant developed by Agricultural Research Service (ARS) scientists in Gainesville, Fla.

The 1/16-inch long parasite, Varroa destructor, is a top pest of honey bees nationwide, hindering the beneficial insects' ability to pollinate almonds, blueberries, apples, zucchini and many other flowering crops.

At the ARS Chemistry Research Unit in Gainesville, research leader Peter Teal and colleagues are testing a bait-and-kill approach using sticky boards and natural chemical attractants called semiochemicals.

In nature, Varroa mites rely on these semiochemicals to locate—and then feed on—the bloodlike hemolymph of both adult honey bees and their brood. Severe infestations can decimate an affected hive within several months—and rob the beekeeper of profits from honey or pollinating services. But in this case, the mites encounter a more heady bouquet of honey bee odors that lure the parasites away from their intended hosts and onto the sticky boards, where they starve.

In preliminary tests, 35 to 50 percent of mites dropped off the bees when exposed to the attractants. Free-roving mites found the semiochemicals even more attractive, according to Teal.

Moreover, the extra dose of semiochemicals wafting through hives didn't appear to significantly interfere with the honey bees' normal behavior or activity, added Teal who, along with postdoctoral associate Adrian Duehl and University of Florida collaborator Mark Carroll, reported the results this past January at the 2009 North American Beekeeping Conference in Reno, Nev.

The team hopes ARS' patenting of the Varroa mite attractants will encourage an industrial partner to develop the technology further.


Story Source:

The above story is based on materials provided by USDA/Agricultural Research Service. Note: Materials may be edited for content and length.


Cite This Page:

USDA/Agricultural Research Service. "Bee Colony Collapse Disorder: New Bait Lures Varroa Mite To Its Doom." ScienceDaily. ScienceDaily, 15 July 2009. <www.sciencedaily.com/releases/2009/07/090705145109.htm>.
USDA/Agricultural Research Service. (2009, July 15). Bee Colony Collapse Disorder: New Bait Lures Varroa Mite To Its Doom. ScienceDaily. Retrieved September 19, 2014 from www.sciencedaily.com/releases/2009/07/090705145109.htm
USDA/Agricultural Research Service. "Bee Colony Collapse Disorder: New Bait Lures Varroa Mite To Its Doom." ScienceDaily. www.sciencedaily.com/releases/2009/07/090705145109.htm (accessed September 19, 2014).

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