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Survey reports latest honey bee losses

Date:
May 3, 2010
Source:
USDA/Agricultural Research Service
Summary:
Losses of managed honey bee colonies nationwide totaled 33.8 percent from all causes from October 2009 to April 2010, according to a new survey.

A honey bee on broccoli, one of the many crops that benefit from honey bee pollination.
Credit: Photo courtesy of Russ Ottens, University of Georgia

Losses of managed honey bee colonies nationwide totaled 33.8 percent from all causes from October 2009 to April 2010, according to a survey conducted by the Apiary Inspectors of America (AIA) and the Agricultural Research Service (ARS). Beekeepers identified starvation, poor weather, and weak colonies going into winter as the top reasons for mortality in their operations.

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This is an increase from overall losses of 29 percent reported from a similar survey covering the winter of 2008-2009, and similar to the 35.8 percent losses for the winter of 2007-2008.

The continued high rate of losses are worrying, especially considering losses occurring over the summer months were not being captured, notes Jeffrey Pettis, research leader of ARS' Bee Research Laboratory in Beltsville, Md. ARS is the U.S. Department of Agriculture's principal intramural scientific research agency. The survey was conducted by Pettis and past AIA presidents Dennis vanEngelsdorp and Jerry Hayes. The three researchers said that continued losses of this magnitude are not economically sustainable for commercial beekeepers.

The 28 percent of beekeeping operations that reported some of their colonies perished without dead bees present--a sign of Colony Collapse Disorder (CCD)--lost 44 percent of their colonies. This compares to 26 percent of beekeepers reporting such dead colonies in the 2008-2009 winter and 32 percent in the 2007-2008 winter. Beekeepers that did not report their colonies having CCD lost 25 percent of their colonies.

As this was an interview-based survey, it was not possible to differentiate between verifiable cases of CCD and colonies lost as the result of other causes that share the "absence of dead bees" as a symptom. The cause of CCD is still unknown.

The survey checked on about 22.4 percent of the country's estimated 2.46 million colonies. The survey reports only winter losses and does not capture colony losses that occur throughout the summer when queens or entire colonies fail and need to be replaced. Those summer losses can be significant.


Story Source:

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


Journal Reference:

  1. dennis VanengElsdorp, Jerry Hayes Jr, Robyn M Underwood and Jeffery S Pettis. A survey of honey bee colony losses in the United States, fall 2008 to spring 2009. Journal of Apicultural Research, 49(1): 7-14 (2010) DOI: 10.3896/IBRA.1.49.1.03

Cite This Page:

USDA/Agricultural Research Service. "Survey reports latest honey bee losses." ScienceDaily. ScienceDaily, 3 May 2010. <www.sciencedaily.com/releases/2010/04/100429111017.htm>.
USDA/Agricultural Research Service. (2010, May 3). Survey reports latest honey bee losses. ScienceDaily. Retrieved March 2, 2015 from www.sciencedaily.com/releases/2010/04/100429111017.htm
USDA/Agricultural Research Service. "Survey reports latest honey bee losses." ScienceDaily. www.sciencedaily.com/releases/2010/04/100429111017.htm (accessed March 2, 2015).

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