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USDA 25/03/13 Honey Bees and Colony Collapse Disorder - 2012 CCD Progress Report

USDA 25/03/13 Honey Bees and Colony Collapse Disorder - 2012 CCD Progress Report
Honey bees, which are a critical link in U.S. agriculture, have been under serious pressure from a mystery problem: Colony Collapse Disorder (CCD), which is syndrome defined as a dead colony with no adult bees or dead bee bodies but with a live queen and usually honey and immature bees still present. No scientific cause for CCD has been proven. But CCD is far from the only risk to the health of honey bees and the economic stability of commercial beekeeping and pollination operations in the United States. Since the 1980s, honey bees and beekeepers have had to deal with a host of new pathogens from deformed wing virus to nosema fungi, new parasites such as Varroa mites, pests like small hive beetles, nutrition problems from lack of diversity or availability in pollen and nectar sources, and possible sublethal effects of pesticides. Contents CCD History In October 2006, some beekeepers began reporting losses of 30-90 percent of their hives. There have also been unusual colony losses before.

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IOWA STATE UNIVERSITY 11/06/12 Iowa State Researchers Explore Possible Causes of Honeybee Disappearance AMES, Iowa — Iowa State University is taking a team approach in studying what is behind the disappearance of honeybees known as "Colony Collapse Disorder." Amy Toth, assistant professor in Iowa State's ecology, evolution and organismal biology department, was awarded an Agriculture and Food Research Initiative grant by the U.S.

You Asked: Are the Honeybees Still Disappearing? From almonds to cherries, dozens of food crops are partially or totally dependent on honeybee pollination. And while media attention has waned, there’s still reason to worry about the country’s smallest and most indispensable farm workers. Bee researchers first reported massive die-offs back in the 1990s. But the plight of the honeybee didn’t truly buzz into the national consciousness until the spring of 2013, when data revealed the average beekeeper had lost 45% of her colonies the previous winter.

ARS USDA 12/08/09 Pathogen Loads Higher in Bee Colonies Suffering from Colony Collapse Disorder By Kim KaplanAugust 12 , 2009 A higher total load of pathogens—viruses, bacteria and fungi—appears to have the strongest link with Colony Collapse Disorder found so far, according to a new study published by Agricultural Research Service (ARS) and university scientists. The study was headed by Pennsylvania State University entomologist Dennis vanEngelsdorp and entomologist Jeff Pettis, geneticist Jay Evans and virologist Yanping Chen with the ARS Bee Research Laboratory in Beltsville, Md. They looked at more than 200 individual variables in 91 colonies from 13 apiaries in Florida and California, where many beekeepers overwinter their honey bees. NATIONAL GEOGRAPHIC 10/05/13 The Plight of the Honeybee - Billions of dollars—and a way of life—ride on saving pollinators. Part of our weekly "In Focus" series—stepping back, looking closer. Bees are back in the news this spring, if not back in fields pollinating this summer's crops. The European Union (EU) has announced that it will ban, for two years, the use of neonicotinoids, the much-maligned pesticide group often fingered in honeybee declines. The U.S. hasn't followed suit, though this year a group of beekeepers and environmental and consumer groups sued the EPA for not doing enough to protect bees from the pesticide onslaught.

Varroa destructor Varroa destructor is an external parasitic mite that attacks the honey bees Apis cerana and Apis mellifera. The disease caused by the mites is called varroosis. Varroa destructor can only reproduce in a honey bee colony. It attaches to the body of the bee and weakens the bee by sucking hemolymph. In this process, RNA viruses such as the deformed wing virus (DWV) spread to bees. A significant mite infestation will lead to the death of a honey bee colony, usually in the late autumn through early spring. ARS USDA 23/05/11 USDA/AIA Survey Reports 2010/2011 Winter Honey Bee Losses By Kim KaplanMay 23, 2011 WASHINGTON — Total losses from managed honey bee colonies nationwide were 30 percent from all causes for the 2010/2011 winter, according to the annual survey conducted by the U.S. Department of Agriculture (USDA) and the Apiary Inspectors of America (AIA). This is roughly similar to total losses reported in similar surveys done in the four previous years: 34 percent for the 2009/2010 winter, 29 percent for 2008/2009; 36 percent for 2007/2008, and 32 percent for 2006/2007. "The lack of increase in losses is marginally encouraging in the sense that the problem does not appear to be getting worse for honey bees and beekeepers," said Jeff Pettis, an entomologist with USDA's Agricultural Research Service (ARS) who helped conduct the study. "But continued losses of this size put tremendous pressure on the economic sustainability of commercial beekeeping."

Museum specimens reveal loss of pollen host plants as key factor driving wild bee decline in The Netherlands Author Affiliations Edited by May R. Berenbaum, University of Illinois at Urbana-Champaign, Urbana, IL, and approved October 30, 2014 (received for review July 9, 2014) Significance Varroa mites « Bee Aware Life cycleEffectDetectionSpread & distributionOverseas experiencesResponseAdditional informationVideos Life cycle Different life stages of Varroa mites at the bottom of a brood cell. CSIRO Varroa mites are parasitic mites, which require a honey bee host to survive and reproduce. The Varroa mite is only able to reproduce on honey bee brood, while only adult female Varroa mites are able to feed on adult honey bees. USDA 21/06/16 USDA Scientists and Beekeepers Swap Colonies to Better Bees By Kim Kaplan June 21, 2016 BELTSVILLE, Md., June 21, 2016 —The U.S. Department of Agriculture's (USDA) Agricultural Research Service (ARS) Bee Research Laboratory and Geezer Ridge Farm apiary have begun an unusual partnership that may help honey bees take another step up the survival ladder. "Usually with science, researchers finish a study and turn the results over to beekeepers to apply; then researchers start on the next experiments and so on," explains entomologist Jay Evans, research leader of the Beltsville, Maryland lab and one of the USDA's pioneers in bee health science. This time, the Bee Research Lab is studying the success Geezer Ridge Farm in Hedgesville, West Virginia, has had improving honey bee health after applying USDA research results.

Current Opinion in Insect Science Available online 31 January 2015 Honey bee colony losses and associated viruses Highlights The terms ‘colony losses’ and ‘CCD’ are defined. The existing correlative evidence for viruses as drivers of colony losses is evaluated. Results from controlled infection experiments are critically reviewed. Substantiation of previous findings on lethality of viruses by RNA interference is presented. Explainer: Varroa mite, the tiny killer threatening Australia's bees A tiny mite has been killing honey bees all around the world, and will inevitably reach Australian shores. So what is this destructive mite, and what we can do to protect Australian honey bees? The Varroa mite, also known as Varroa destructor, is only the size of a pin head but it is the most serious threat to the viability of the Australian honey bee industry.

ARS USDA 02/08/16 ARS Research Leads to Better Understanding of Bee Health By Kim Kaplan August 2, 2016 WASHINGTON, August 2, 2016—Bacteria in the gut of young honey bees may provide clues about the impact parasites have on bee health. That and other experimental findings were published by U.S. Department of Agriculture's Agricultural Research Service (ARS) researchers in the Proceedings of the National Academy of Sciences. Because young honey bees don't have gut bacteria, entomologist Jay Evans and post-doc Ryan Schwarz at ARS' Bee Research Laboratory in Beltsville, Maryland, and University of Texas at Austin professor Nancy Moran conducted tests to determine the impact different combinations of a common bacterium and a common parasite had on honey bee health. The scientists hypothesized that increasing the gut bacterium would make the bees more resistant to the parasite, but instead it lead to surprising results.