(Beyond Pesticides, January 11, 2012) On January 10, beekeepers from across the country gathered at a national conference, with environmental organizations at their side, to draw attention to the growing plight facing their industry —the decline of honey bees, a problem that has far reaching implications for the U.S. economy. The disappearance of the bees alerts us to a fundamental and systemic flaw in our approach to the use of toxic chemicals -and highlights the question as to whether our risk assessment approach to regulation will destroy our food system, environment, and economy. “Bees and other pollinators are the underpinnings of a successful agricultural economy,” said Brett Adee, Co-Chair of the National Honey Bee Advisory Board and owner of Adee Honey Farms. “Without healthy, successful pollinators, billions of dollars are at stake.” Many family-owned beekeeping operations are migratory, with beekeepers traveling the country from state-to-state, during different months of the year to provide pollination services and harvest honey and wax. Bees in particular are responsible for pollinating many high-value crops, including pumpkins, cherries, cranberries, almonds, apples, watermelons, and blueberries. So any decline in bee populations, health and productivity can have especially large impacts on the agricultural economy (see factsheet). Honey […]

(Beyond Pesticides, January 10, 2012) A Purdue University study shows that honey bees’ exposure to the highly toxic neonicotinoid pesticide clothianidin, as well as thiamethoxam, is greater than previously thought. Beyond Pesticides, as a part of a coalition of beekeeping and environmental groups, challenged the Environmental Protection Agency (EPA) in a December 2010 letter for allowing the continued use of this bee-killing pesticide after EPA admitted in a leaked memo that its field study on bees is inadequate. The study, “Multiple Routes of Pesticide Exposure for Honey Bees Living Near Agricultural Fields,” was published January 3, 2012 in the online edition of PLoS ONE. Like other neonicotinoid pesticides, clothianidin is a systemic pesticide, which is taken up by a plant’s vascular system and expressed through pollen, nectar, and gutation droplets. It is most commonly applied by seed treatment. Most pesticides that are toxic to bees carry a warning that the product cannot be applied while foraging bees are present. As this study shows, systemic pesticides continue to expose and poison bees throughout foraging season. The study authors decided to take a closer look at clothianidin routes of exposure because of its prevalence in honey bee pollen and comb material, combined […]

(Beyond Pesticides, October 28, 2011) St. Louis-based chemical and seed giant Monsanto Co. has purchased a company called Beeologics, which has developed a product intended to counteract viral agents that plague honey bee colonies in an attempt to stem the effects of Colony Collapse Disorder (CCD). However, advocates wonder whether the antiviral agent will result in any significant decline of CCD when bees around the country and across the world continue to be exposed to highly toxic pesticides that are known to have serious effects on a range of pollinators, including honey bees. Beeologics was founded in 2007 and is headquartered in both Florida and Israel. The company’s antiviral agent, called Remembee, is designed to fight a virus that is commonly thought to be a contributing factor to CCD. According to the St. Louis Post-Dispatch, Monsanto spokesperson Kelly Powers said that, “I don’t need to tell you how important bees are to farmers who rely on pollination, and Remembee has great promise, pending approvals.” The product is currently being reviewed for potential commercial sale by the U.S. Food and Drug Administration. Efforts to counteract CCD are commendable, as a range of factors, including viruses as well as colony invaders such […]

(Beyond Pesticides, October 4, 2011) In September, Bayer CropScience announced that it plans to phase-out its most acutely toxic pesticides, all remaining World Health Organization (WHO) class I products, by the end of 2012. While this is a positive development, Beyond Pesticides points out that other Bayer pesticides, such as its bee-killing insecticides imidacloprid and clothianidin, will remain on the market. Activists around the globe have mixed reactions to Bayer’s announcement, which comes over 15 years after Bayer first promised to phase-out its WHO Class I products. Philipp Mimkes of the Coalition Against Bayer Dangers based in Germany said, “This is an important success for environmental organizations from all over the world who have fought against these deadly pesticides for decades. But we must not forget that Bayer broke their original promise to withdraw all class I products by the year 2000. Many lives could have been saved. It is embarrassing that the company only stopped sales because the profit margins of these chemical time bombs have fallen so much.” Acutely toxic pesticides with a WHO Class I rating are extremely toxic and present an immediate hazard to farmworkers and others in the vicinity of pesticide applications. The WHO estimates […]

(Beyond Pesticides, September 6, 2011) Scientists in France have discovered that honey bees are at a higher risk of dying from infection by Nosema ceranae (N. ceranae) when they are exposed to low doses of insecticides. The results, presented in the journal PLoS ONE, support the theory that combining more N. ceranae with high pesticide content in beehives could contribute to colony depopulation. The French study, “Exposure to Sublethal Doses of Fipronil and Thiacloprid Highly Increases Mortality of Honeybees Previously Infected by Nosema ceranae,” brought together researchers from the Laboratoire Microorganismes: Génome et Environnment and the Laboratoire de Toxicologie Environnment who utilized their respective skills in parasitology and toxicology to assess the effect of pathogen/toxin interactions on bee health. In the laboratory, the researchers chronically exposed newly emerged honey bees, some healthy and others infected with Nosema ceranae, to low doses of insecticides: fipronil and thiacloprid. They found that the infected bees died when they were chronically exposed to insecticides, even at sublethal doses, unlike the healthy bees. This combined effect on honeybee mortality was observed with daily exposure to extremely low doses (over 100 times less than the LD50 or dose needed to kill 50% of the sample population, […]

(Beyond Pesticides, July 1, 2011) The U.S. Environmental Protection Agency (EPA) has granted emergency approval for the use of the neonicotinoid pesticide dinotefuran to control brown marmorated stink bugs in seven eastern states. Dinotefuran is a member of the neonicotinoid family of systemic pesticides that is known to be highly toxic to bees and associated with Colony Collapse Disorder. The states of Delaware, Maryland, New Jersey, North Carolina, Pennsylvania, Virginia, and West Virginia had previously asked EPA for emergency approval of the pesticide due to a ballooning stink bug population. The short term emergency measure became effective June 24 and will expire on October 15 of this year. Dinotefuran is already approved by EPA for use on other crops, such as grapes, cotton, and some vegetables. The emergency approval relates to the pesticide’s use on orchard crops such as apples, pears, peaches, and nectarines, for which it has not previously been allowed. Growers of those crops will now be able to apply dinotefuran from the ground twice per season. The agency will allow a total of 29,000 orchard acres to be treated, which does not include applications to the previously approved crops. Under a controversial stipulation known as a Section […]

(Beyond Pesticides, June 10, 2011) A report released jointly by the U.S. Department of Agriculture’s (USDA) Agricultural Research Service (ARS) and the Apiary Inspectors of America (AIA) shows that losses of honeybee populations over the 2010/2011 winter remained abnormally high, reflecting continuing damages attributed to colony collapse disorder (CCD). CCD, linked to a range of factors and agricultural chemicals, including systemic pesticides, has devastated bees and beekeepers around the country in recent years. According to the survey, 30% of managed honeybee colonies across the country were lost over the winter. Over the past five years, since the discovery of CCD, annual winter colony losses have hovered near the 30% mark. Similar loss percentages for the previous four years reflect this trend: 34% for the 2009/2010 winter, 29% for 2008/2009, 36% for 2007/2008, and 32% for 2006/2007. ARS entomologist Jeffrey Pettis, PhD, who helped to conduct the survey and has been the agency’s lead researcher on CCD heading up the USDA Bee Research Laboratory, said, “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. But continued losses of this size put tremendous pressure […]

(Beyond Pesticides, April 1, 2011) A British government scientist on Wednesday announced that he has ordered a review of a class of pesticides known as neonicotinoids, to determine what effects they may have on bee and pollinator health. Neonicotinoids, such as clothianidin and imidacloprid, have come under intense scrutiny recently due to concerns regarding their toxicity to honeybees, which are essential for a secure food supply in their role as crop pollinators. This has led some to suggest that chemicals such as these could be contributors to honeybee Colony Collapse Disorder (CCD). According to the London Daily Mail, the chief scientist at the UK Department of Environment, Food and Rural Affairs (DEFRA), Professor Robert Watson, has directed DEFRA scientists to reexamine findings on neonicotinoids and their effects on bees. The Mail suggests that Watson may have been partly motivated by a recent study done by Dr. Jeffrey Pettis of the U.S. Department of Agriculture’s Agricultural Research Service. This study was the first to show that neonicotinoids impact the survival of bees at levels below the level of detection, meaning that field studies would not have considered the role of the pesticide, because they would not have detected it. Although a […]

(Beyond Pesticides, March 14, 2011) Scientists working for the United Nations (UN) reveal in a report published March 10, 2011 that the collapse of honeybee colonies is now a global phenomenon that could have devastating consequences. Declines in managed bee colonies, seen increasingly in Europe and the US in the past decade, are now being observed in China, Japan and Egypt according to the report, “Global Bee Colony Disorders and other Threats to Insect Pollinators,” from the United Nations Environment Programme (UNEP). In the UNEP report, leading honeybee experts in the world stress that the potentially disastrous decline in bees —which are a vital pollinating element in food production for the growing global population””is likely to continue unless humans profoundly change their ways from the use of insecticides to air pollution. “The way humanity manages or mismanages its nature-based assets, including pollinators, will in part define our collective future in the 21st century,” UNEP Executive Director Achim Steiner said. “The fact is that of the 100 crop species that provide 90 per cent of the world’s food, over 70 are pollinated by bees.” “Human beings have fabricated the illusion that in the 21st century they have the technological prowess to […]

(Beyond Pesticides, February 23, 2011) In response to a request by beekeepers and environmentalists to remove a pesticide linked to Colony Collapse Disorder (CCD), the U.S. Environmental Protection Agency (EPA) in a letter, defended the pesticide clothianidin and the scientific study in question which was identified by beekeepers as a critically flawed study. EPA states that it does not intend to suspend or cancel clothianidin, even though independent studies have linked this chemical and others in its class to bee decline. Beyond Pesticides, as a part of a group of environmentalists and beekeepers, broke the news last December that a core study underpinning the registration of the insecticide clothianidin was unsound, citing leaked EPA memos which discloses the critically flawed scientific study and its reclassification as a “core” study on which clothianidin’s conditional registration was contingent on, to a “supplemental” study. Bayer CropSceicne, manufacturer of clothianidin designed and submitted to study to EPA as part of clothianidin’s registration requirement. Beekeepers claim that the initial field study guidelines, which the Bayer study failed to satisfy, were insufficiently rigorous to test whether or not clothianidin contributes to CCD in a real-world scenario: the field test evaluated the wrong crop, over an insufficient […]

(Beyond Pesticides, January 25, 2011) Research by the U.S. Department of Agriculture’s (USDA) Bee Research Laboratory and Penn State University shows that the neonicotinoid insecticide imidacloprid contribute —at extremely low levels— to bee deaths and possibly colony collapse disorder (CCD), the widespread disappearance of honey bees that has killed off more than a third of commercial honey bees in the U.S. While the study has not been published yet, the UK’s The Independent newspaper reports that honeybees exposed to imidacloprid are more susceptible to the fungal pathogen Nosema. This is the first study to show that neonicotinoids impact the survival of bees at levels below the level of detection, meaning that field studies would not have considered the role of the pesticide, because they would not have detected it. USDA researcher Jeffrey Pettis, PhD and Penn State University researcher Dennis Van Engelsdorp, PhD explained their research in the 2010 documentary, The Strange Disappearance of the Honeybees (transcript courtesy of Grist.org): [Pettis] I’ve done a recent study actually in collaboration with Dennis van Engelsdorp and some other researchers, where we exposed whole colonies to very low levels of neo-nicotinoids in this case, and then ”˜challenged’ bees from those colonies, with Nosema […]

(Beyond Pesticides, December 9, 2010) Beekeepers and environmentalists called on the U.S. Environmental Protection Agency (EPA) December 8, to remove a pesticide linked to Colony Collapse Disorder (CCD), citing a leaked EPA memo that discloses a critically flawed scientific support study. The November 2nd memo identifies a core study underpinning the registration of the insecticide clothianidin as unsound after EPA quietly re-evaluated the pesticide just as it was getting ready to allow a further expansion of its use. Clothianidin (product name “Poncho”) has been widely used as a seed treatment on many of the country’s major crops for eight growing seasons under a “conditional registration” granted while EPA waited for Bayer Crop Science, the pesticide’s maker, to conduct a field study assessing the insecticide’s threat to bee colony health. Bayer’s field study was the contingency on which clothianidin’s conditional registration was granted in 2003. As such, the groups are calling for an immediate stop-use order on the pesticide while the science is redone, and redesigned in partnership with practicing beekeepers. They claim that the initial field study guidelines, which the Bayer study failed to satisfy, were insufficiently rigorous to test whether or not clothianidin contributes to CCD in a real-world […]

(Beyond Pesticides, August 3, 2010) A new study shows that due to a flaw in standard risk assessments, which consider toxic effects at fixed exposure times, the risks posed by the neonicotinoid pesticides imidacloprid and thiacloprid are likely to be underestimated. The authors believe that minute quantities of imidicloprid may be playing a much larger role in killing bees over extended periods of time than previously thought. The study, “The significance of the Druckrey—Küpfmüller equation for risk assessment””The toxicity of neonicotinoid insecticides to arthropods is reinforced by exposure time,” was published online July 23, 2010 in the journal Toxicology. The authors believe that standard risk assessment calculations underestimate toxicity because they do not accurately account for the interplay of time and level of exposure. According the study: The essence of the Druckrey—Küpfmüller equation states that the total dose required to produce the same effect decreases with decreasing exposure levels, even though the exposure times required to produce the same effect increase with decreasing exposure levels. Druckrey and Küpfmüller inferred that if both receptor binding and the effect are irreversible, exposure time would reinforce the effect. The Druckrey—Küpfmüller equation explains why toxicity may occur after prolonged exposure to very low toxicant […]

(Beyond Pesticides, September 30, 2008) A group of insect-killing sprays known as neonicotinoids that are widely used in UK farming have now been banned in four other European countries because they are thought to be killing bees. Italy has just joined Germany, Slovenia and France in banning the sprays. This week the Italian government issued an immediate suspension of these sprays after they accepted that they are killing bees. Yesterday, the Britain’s Soil Association (SA) wrote to Hilary Benn, the Secretary of State for the Environment, urging him to ban the sprays in the UK with immediate effect. In the letter, SA Policy Director Peter Melchett wrote, “I fear it is typical of the current extraordinarily lax approach to pesticide regulation in the UK that we look like being one of the last of the major farming countries in the EU to wake up to the threat to our honeybees.” He also stated that the UK’s current pesticide regulation “is too dominated by scientists from one side of the debate about pesticide safety, fails to take adequate account of the public interest as against the interest of the chemical industry and some farmers, and fails adequately to apply the precautionary […]

(Beyond Pesticides, September 2, 2008) In new research findings by a Pennsylvania State University team, honey bees are exposed to a wide variety of pesticides outside of their hives. Add the outside assault to the pesticides already in the waxy structure of the hive, and bee researchers see a problem difficult to evaluate. However, an innovative approach may mitigate at least some beeswax contamination. The researchers presented their analysis of pollen, brood, adult bees and wax samples on August 18 at the 236th national American Chemical Society meeting in Philadelphia. Those results show unprecedented levels of fluvalinate and coumaphos – pesticides used in the hives to combat varroa mites – in all comb and foundation wax samples. They also find lower levels of 70 other pesticides and metabolites of those pesticides in pollen and bees. “Everyone figured that the acaricides (anti-varroa mite chemicals) would be present in the wax because the wax is reprocessed to form the structure of the hives,” says Maryann Frazier, senior extension associate. “It was a bit of a shock to see the levels and the widespread presence of these pesticides.” While the researchers expected the presence of the chemicals available to treat varroa mites in […]

(Beyond Pesticides, August 28, 2008) The German Coalition Against Bayer Dangers has filed legal action in Germany against Bayer for its role in marketing insecticides that the coalition believes company officials knew were toxic to honey bees. The suit follows recent action by the Natural Resources Defense Council (NRDC) against the Environmental Protection Agency (EPA) to force the agency into compliance with its Freedom of Information Act request for scientific studies relating to clothianidin, one of the Bayer-manufactured pesticides tied to bee toxicity. In May, Germany suspended the approval of eight pesticides linked to a massive bee die-off. Six of the eight suspended are manufactured by Bayer, the other two by Syngenta. Two of the primary active ingredients of concern are clothianidin and imidacloprid, both in the neonicotinoid family of chemicals. They are systemic pesticides, meaning the chemical is incorporated into plant tissue and can therefore be present in pollen and nectar, which is of particular importance to bees. They also have long persistence in the soil and can be absorbed by multiple generations of crops, increasing the likelihood of exposure for bees. Attorney Harro Schultze, who represents the Coalition Against Bayer Dangers said, “The public prosecutor [in Germany] needs […]

(Beyond Pesticides, May 23, 2008) In the midst of dramatically declining bee populations, the German Office for Consumer Protection and Food Safety (BVD) has suspended the approval of eight toxic insecticides believed to be responsible for the fate of these important pollinators. The suspended products include pesticides containing imidacloprid and clothianidin, the majority of which are produced by Bayer Company and have been suspected for years of contributing to declining bee populations.France banned the use of imidacloprid on corn and sunflowers in 1999, and rejected Bayer’s application for clothianidin this year. Despite the call for prohibition of imidacloprid from German apiarists and environmental groups as early as 2004, a crisis in bee populations–a reported 50-60% loss, finally forced the government to take action. The U.S., where these products are still approved for use, has also been experiencing extremely alarming rates of bee colony collapse, while areas away from cropland have thriving bee populations. Imidacloprid and clothianidin are both neonicotinoids, meaning that they target nerve cells in a similar way to nicotine, acting as neurotoxins to sucking insects such as beetles and aphids. Clothianidin was approved for use in the U.S. in 2003 as a seed treatment for corn and canola, […]

(Beyond Pesticides, June 19, 2007) Scientists investigating a mysterious die-off of many of the nation’s honeybees are concentrating on pesticides and microorganisms as possible causes of the disorder, and some beekeepers are refusing to place their hives near chemically treated fields out of fear that pesticides may be contributing to the die-off. Scientists from Penn State University and the U.S. Department of Agriculture are leading the research into the disease, which has killed tens of thousands of bee colonies in at least 35 states. The die-off has threatened the livelihood of commercial beekeepers and strained fruit growers and other farmers who rely on bees to pollinate more than 90 flowering crops, including apples, nuts and citrus trees. After months of study, researchers cannot tie the ailment to any single factor. But scientists have zeroed in on a new, unnamed pathogen found in the dead bees, and on the role of pesticides, said Maryann Frazier, a senior extension associate in the university’s entomology department. David Hackenberg was the first beekeeper to report the disorder to Penn State last fall after losing nearly 75 percent of his 3,200 colonies. He has since rebuilt his business to 2,400 colonies, but now asks growers […]