(Beyond Pesticides, November 16, 2015) Bayer CropScience, the manufacturer of neonicotinoid pesticides that are linked to severe decline in pollinator populations, is expected to pay fines to multiple countries in Europe for wine grape damages associated with another of its pesticides. Citing “atypical symptoms” resulting from the use of a relatively new fungicide, Bayer initially sent out a warning to wine growers to cease use of their product. Now, Bayer is collecting data and assessing how much it will offer to wine growers for the damages its product has caused. European grape growers, including vineyards in Austria, France, Germany, Italy, Luxembourg and Switzerland, have reported deformed leaves and lower yields after using Moon Privilege, also known as Luna Privilege in some markets, from the German company’s CropScience unit. In Switzerland, losses are estimated at 80 million Swiss francs ($83.73 million), as reported by marketing group Swiss Wine to Reuters. Swiss Wine’s general secretary estimates harvest losses totaling 6.65 million kilos (14 million pounds) of grapes in 2015, or about  4.85 percent of 2014’s crop. It is also estimated that wine makers have lost approximately six million bottles of wine, with  Pinot Noir grapes and Chasselas, a white wine grape, hardest […]

(Beyond Pesticides, November 13, 2015) Research finds that sound waves could combat the Asian citrus psyllid, an insect that has been devastating Florida orange groves, and possibly reduce the need for pesticides. The Asian citrus psyllid carries a bacteria that causes “citrus greening,” an incurable disease with symptoms that include yellow shoots, uneven discolored patches, and deficiencies with the production of chlorophyll, green pigment found within plants. To stem the spread of the disease  —which is responsible for an estimated $3.63 billion in lost revenue from orange juice for the state of Florida from 2006-2012— researchers at the U.S. Department of Agriculture (USDA) and University of Florida (UF) are developing vibration traps that hijack psyllid mating calls to locally bring their populations under control. “We’re trying hard to cut down on use of pesticides in orange groves, partly because we are worried they’ll build up resistance to pesticides, and that will make things even worse,” said Richard Mankin, Ph.D., a research entomologist with USDA. He presented  findings  on acoustic disruption at the meeting of the American Acoustical Society  last month in Jacksonville. When a male Asian psyllid is looking for a mate, he situates himself on a twig and alerts […]

(Beyond Pesticides, November 12, 2015) The U.S. Geological Survey (USGS) recently performed the first-ever study of pesticide residues on native bee populations and found that they are exposed to neonicotinoid insecticides, as well as other pesticides, at significant rates. This study digs deeper into a question  that was previously considered by a researcher who  studied chemical-intensive  apple orchards and linked a steep decline in wild or native bees to the application of pesticides. The USGS study  broadens understanding about the effects of toxic pesticides to native bee species, expanding field research that has principally focused on managed honey bee populations. The study tested for 122 different pesticides including bifenthrin, atrazine and chlorpyrifos, a chemical for which the U.S. Environmental Protection Agency (EPA) recently proposed to revoke all food tolerances in response to  a court-ordered deadline. According to study findings, 72% of bees tested positive for pesticide residues, raising concerns for the potential for unintended pesticides exposures where land uses overlap or are in proximity to one another.   Residues of pesticides found in bees in the study include  thiamethoxam, clothianidin, and imidacloprid, all of which are highly toxic neonicotinoids, a class of chemicals that have been linked to the global […]

(Beyond Pesticides, November 09, 2015) The U.S. Department of Agriculture (USDA) cancelled a webinar on the presence of neonicotinoids in waterways in the Prairie Pothole region, according to the government watchdog group Public Employees for Environmental Responsibility (PEER). PEER states that the cancellation is “another example of USDA interfering with the release of new science-based information about adverse effects linked to  neonicotinoid (neonics) pesticides.” As a result, PEER continues, “Growing ecological risks posed by the most widely used insecticides in North America will likely not be considered in developing USDA policies, planning or management practices.” Neonicotinoids are a controversial class of chemicals that have been linked to the global bee decline by a rapidly growing body of scientific literature. A webinar, titled Pesticides and Potholes: Understanding the Risks of Neonicotinoid Insecticides to Aquatic Ecosystems in Prairie Canada and Beyond,  was supposed to take place June 24, 2014, according to PEER. Instead, the online event was cancelled by Wayne Honeycutt, Ph.D., the Deputy Chief for Science and Technology at USDA’s Natural Resources Conservation Service (NRCS). The online event would have featured Christy Morrissey, Ph.D., an assistant professor in the University of Saskatchewan, Saskatoon, School of Environment and Sustainability, whose research includes […]

(Beyond Pesticides, October 29, 2015) One of the top entomologists at the U.S. Department of Agriculture (USDA) filed a whistleblower complaint against a  federal agency, citing unprofessional retaliation following the publication of a study linking neonicotinoid insecticides to the decline of monarch butterflies. Jonathan Lundgren, Ph.D., Senior Research Entomologist and Lab Supervisor for the Agricultural Research Service (ARS) in South Dakota, is fighting suspension for publishing research deemed “sensitive” by his USDA superiors. According to Jeff Ruch, executive director of Public Employees for Environmental Responsibility (PEER), which is providing legal services to Dr. Lundgren, this case underscores why legal protections for government scientists are sorely needed. Until recently, Dr. Lundgren worked for USDA for eleven years with great success, and his cutting edge research has drawn national attention and international recognition. In April of this year, Dr. Lundgren published a study in The Science of Nature that shows that clothianidin, a neonicotinoid seed treatment, kills monarch butterfly larvae in the laboratory. On August 3, 2015, USDA imposed a 14-day suspension against Dr. Lundgren for submitting the Science of Nature study and for a paperwork error in his travel authorization for his invited presentation about his research to a panel of […]

(Beyond Pesticides, October 28, 2015) On the heels of a recent federal court decision that rejected the U.S. registration of sulfoxaflor, which cited inadequate and flawed review of the science on the chemical’s toxicity to bees, European beekeepers filed complaint that that asks the European Court of Justice to take the same action. The complaint  asks the court to cancel sulfoxaflor’s authorization. Sulfoxaflor is a neonicotinoid-like chemical that, like neonicotinoids, is highly toxic to bees. Three of the most widely used neonicotinoids are currently under a two-year European-wide moratorium which began December 2013, due to concerns about risks to bee populations. European beekeepers, Bee Life European Beekeeping Coordination, the Italian National Beekeeping Union (UNAAPI), and PAN Europe, filed the complaint which cites a published  negative opinion on Dow AgroScience’s sulfoxaflor by the European Food Safety Authority (EFSA). According to EFSA, the pesticide is categorized as ”˜highly toxic to bees’ and it identified crucial toxicity data gaps, which according to the beekeepers, makes a proper risk assessment for bees impossible. Despite these facts, the European Commission’s Directorate-General for Health and Food Safety (DG Sante) and the EU member states authorized sulfoxaflor in July 2015, completely bypassing the pesticide regulation, the complaint […]

(Beyond Pesticides, October 26, 2015) Last week, Pop Weaver, the second largest popcorn supplier in the country, released an official statement on its commitment to “removing 50 percent of its neonicotinoid usage in 2016, 75 percent in 2017, with a long-term commitment of further reducing usage by working with agricultural universities and those companies supplying neonicotinoids to the seed industry.” Widely-used neonicotinoids (neonics), which as systemic chemicals move through a plant’s vascular system and express poison through pollen, nectar, and guttation droplets, have been identified in multiple  peer-reviewed studies  and by beekeepers  as the major contributing factor in bee decline. This commitment is a response to a campaign led by Center for Food Safety (CFS), which asked citizens to sign a petition asking Pop Weaver, and other large popcorn suppliers, to protect bees and other pollinators by phasing out the use of neonicotinoid-coated corn seed. Over 37,000 people have signed their petition. Americans eat, on average, 17.3 billion quarts of popcorn each year; each American eats about 68 quarts. According to CFS, there are roughly 40 insecticides currently registered for use as an active chemical on popcorn, including 3 bee-toxic neonicotinoid chemicals: clothianidin, thiamethoxam, and imidacloprid. Between  79 and 100 […]

(Beyond Pesticides, October 20, 2015) Exposure to neonicotinoid (neonic) pesticides results in profound negative impacts to the health of honey bee queens, according to an international team of researchers led by Geoff Williams, MD, PhD, at the University of Bern in Switzerland. While most studies to date have investigated how neonics effect the health of individual workers or overall colony fitness, Dr. William’s study, Neonicotinoid pesticides severely affect honey bee queens, is one of the first to focus on the health of honey bee queens. Neither the European Union nor U.S. Environmental Protection Agency (EPA) study the impacts of pesticides on queen health before allowing a pesticide to market. The results of this research are particularly concerning, given widespread anecdotal evidence from beekeepers across the globe that ”˜poor quality queens’ are playing a role in bee declines. To test the impacts of these chemicals on queen honey bees, scientists exposed a sample of 29 queens to field-realistic levels of the neonics  clothianidian and thiamethoxam (1 parts per billion and 4 ppb respectively), and compared them to a population of 28 control queens, which were not treated with neonics. Both groups experienced similar environmental circumstances in terms of food availability, rearing […]

(Beyond Pesticides, October 15, 2015) A new study, published in Environmental Science & Technology, has found that wildflowers bordering fields that are treated with neonicotinoids contain a higher concentration of the bee-toxic pesticides than the actual treated fields, pointing out an often overlooked avenue of exposure for bees. Widely-used neonicotinoids, which as systemic chemicals move through a plant’s vascular system and express poison through pollen, nectar, and guttation droplets, have been identified in multiple  peer-reviewed studies  and by beekeepers  as the major contributing factor in bee decline. The study, titled Neonicotinoid Residues in Wildflowers, A Potential Route of Chronic Exposure for Bees, discovered neonicotinoid insecticides in wildflowers, including Hogweed and Poppy pollen (up to 86ppb and 64ppb, respectively). The study’s authors  found higher concentrations of neonicotinoids in wild flowers in field margins than in Oilseed rape flowers in the adjacent neonicotinoid treated crop — on average 15ppb vs. 3ppb.   They also found that more than 97% of the neonicotinoids being brought into the hive by honey bees are from wildflowers, while only 3% are  from the crop. Researchers have found  that chronic exposure to neonicotinoids increases neuronal vulnerability to mitochondrial dysfunction in the bumblebee. In other words, these pesticides […]

(Beyond Pesticides, September 25, 2015) Neonicotinoid-treated seeds do not reduce crop damage from pests, adding to a growing body of evidence questioning the benefits of using these bee-toxic insecticides, according to a study  published in the journal BioOne. Widely-used neonicotinoids (neonics), which as systemic chemicals move through a plant’s vascular system and express poison through pollen, nectar, and guttation droplets, have been identified in multiple  peer-reviewed studies and by beekeepers  as the major contributing factor in bee decline. The study,  titled Impact of Western Bean Cutworm (Lepidoptera: Noctuidae) Infestation and Insecticide Treatments on Damage and Marketable Yield of Michigan Dry Beans, examines the relationship between western bean cutworm infestation and damage in dry beans, and the use of seeds treated with the neonicotinoid thiamethoxam, as well as soil treated with aldicarb, another systemic insecticide. Researchers have concluded that neither thiamethoxam nor aldicarb reduced cutworm damage. In fact, plots treated with these insecticides had a higher percentage of defects due to feeding by pests when compared to untreated plots, which researchers believed is  attributable to factors such as fewer natural enemies. There have been additional reports and studies published over the past few years questioning the benefits of neonic use. In […]

(Beyond Pesticides, September 17, 2015) On Tuesday, the City Council of Lafayette, Colorado unanimously approved a resolution to prohibit bee-toxic neonicotinoid insecticides on city property. The resolution restricts the use of neonicotinoids on any land owned or operated by the city, including public rights-of-way, parks, playing fields, watersheds and ditches, open space lands, and public landscapes. Modeled on  a resolution passed in May by neighboring Boulder city, the new resolution has been propelled through the City Commission with  support from grassroots organizations, including Bee Safe Boulder and Pesticide Free Boulder County Coalition. The resolution affirms that the City of Lafayette: Not purchase or use any neonicotinoid pesticides on city owned or operated land; Restrict city and agricultural contractors from using neonicotinoids like imidacloprid, clothianidin, thiamethoxam, dinotefuran, etc.; Provide exceptions only when emergency situations where the life or health of a valuable, important land asset is at risk, such as a valuable tree or golf course, and when the neonicotinoid application is the most effective option; Urge all residents and business in Lafayette to suspend neonicotinoids for use in seed treatment, soil application, foliar treatment, and other bee-attractive settings; Purchase landscape materials that have not been treated with neonicotinoids and urge […]

(Beyond Pesticides, September 16, 2015) In a letter posted to the federal docket, the U.S. Department of Agriculture (USDA) states that it is opposed to U.S. Environmental Protection Agency’s (EPA) recent proposal to restrict pesticides highly toxic to bees on sites where managed bees are present, saying the measure “has not established the need for such a prohibition.” In its position, USDA  cites economic impacts to farmers and lack of a cost/benefit analysis. USDA’s critique of EPA’s proposal contrasts with a decision handed down last week by a federal court that ruled EPA should not ignore risk concerns for bees and rejected the registration of a pesticide known to be highly toxic to bees, highlighting a lack of collaboration and understanding between federal agencies in advancing  pollinator protection. USDA communicated its challenge to EPA despite the growing body of science on the hazards of neonicotinoid insecticides and findings in Europe that their restriction does not undermine crop productivity. Last May,  EPA announced a new proposal  to temporarily prohibit foliar applications of pesticides that are acutely toxic to bees during plant bloom and when managed bees are on site and under contract. The proposal received a mixed response, with many from […]

(Beyond Pesticides, September 4, 2015) Research into neonicotinoid insecticides, a class of bee-toxic chemicals, and their effects on bees, needs to be more comprehensive in order to better reflect their global use, concludes a recent review of the current literature. The authors of the review state that despite considerable research efforts, there are still significant knowledge gaps concerning the impacts of neonicotinoids on bees. Since 2006, honey bees and other pollinators in the U.S. and throughout the world have experienced ongoing and rapid population declines. The science has become increasingly clear that pesticides (especially the  neonicotinoid class of insecticides), either acting individually or synergistically, play a critical role in the ongoing decline of honey bees and wild pollinators. Neonicotinoids can be persistent in the environment, and have the ability to translocate into the pollen and nectar of treated plants. The systematic review, titled Neonicotinoid Insecticides and Their Impacts on Bees: A Systematic Review of Research Approaches and Identification of Knowledge Gaps  and published in the journal PLoS ONE, took a look at over 200 primary research studies in order to identify knowledge gaps. While there is a growing body of science examining the impacts of neonicotinoid use, knowledge gaps need […]

(Beyond Pesticides, August 28, 2015) The European Union’s food safety agency confirmed Wednesday that foliar spraying of neonicotinoids (neonics), the widely-used bee-toxic insecticides, poses a risk to bees, bolstering previous research that led to a two-year moratorium on the chemicals in the EU. The European Food Safety Authority (EFSA), which guides EU policymakers, said leaf spray containing three neonicotinoid pesticides — clothianidin, imidacloprid, and thiamethoxam — could harm bees. Previous research found that these chemicals pose a risk as seed treatments or granules, which prompted the European Commission to limit their use in  December 1, 2013. The use of the three neonicotinoid substances in seed or soil treatments is prohibited in the European Union for crops attractive to bees and for cereals other than winter cereals except in greenhouses. “They (the EFSA conclusions) confirm that the Commission was correct to take precautionary measures in 2013,” a Brussels-based EU executive said in a statement. Neonicotinoids have been found by  a growing body of scientific literature  to be linked to honey bee and pollinator decline. Recently, a  study  performed by the Food and Environment Research Agency (FERA) in the United Kingdom provides evidence confirming the link between neonicotinoid pesticides and continually increasing […]

(Beyond Pesticides, August 26, 2015) A  study performed by the Food and Environment Research Agency (FERA) in the United Kingdom (UK) provides evidence of confirming the link between neonicotinoid pesticides and continually increasing honey bee colony losses on a landscape level. The study, Evidence for pollinator cost and farming benefits of neonicotinoid seed coatings on oilseed rape, was published in the Nature journal Scientific Reports. This is a significant study, as the UK government has always maintained that neonicotinoid pesticides do not threaten bees, and that honey bee losses are instead caused by the parasitic varroa mite, siding with industry arguments that pesticides are safe when used properly. However, this new study indicates otherwise, confirming a direct link between neonicotinoids and honey bee colony losses at a nationwide level. This study distinguishes itself from  a previous study in the U.S. that extrapolated real world neonicotinoid exposure levels  to  test hives by analyzing actual fields in a  long-term assessment. To a large degree, the new study addresses industry critics of the earlier study design who have tried to discount previous findings of bee decline associated with neonicotinoid use (see Beyond Pesticides’ Sowing the Seeds of Doubt, which addresses these industry myths). […]

(Beyond Pesticides, August 25, 2015) Last Friday, the City Council of Minneapolis, MN unanimously passed a resolution declaring Minneapolis a pollinator-friendly community and urging city residents to take steps to protect dwindling pollinator populations. A groundswell of public support from a wide range of local and national groups, including Beyond Pesticides, resulted in swift passage of the resolution, the latest in a long string of local government action to safeguard pollinators from harmful pesticides, as federal proposals fail to address the magnitude of the crisis. “With the passage of today’s resolution, Minneapolis is now doing its part in the global effort to protect and grow the pollinator populations,” Mayor Betsy Hodges said to CBS Minnesota. The resolution, introduced and written by Councilmember Cam Gordon, assigns a number of bee safe actions to various city departments. While the Health Department’s Environmental Services Unit will maintain a list of pollinator-friendly plants, the Community Planning and Economic Development Department and Property Services Division of the City Coordinator’s office will create habitat for local pollinators. The Minneapolis Public Works Department will pursue both increased bee habitat and adopt clear guidelines against the use of pesticides, including but not limited to systemic neonicotinoid  (“neonic”) insecticides, […]

(Beyond Pesticides, August 21, 2015) Neonicotinoid insecticides contaminate over half of urban and agricultural streams across the United States and Puerto Rico, according to a study released earlier this week by the U.S. Geographical Survey (USGS). Neonicotinoids (neonics) are bee-toxic insecticides that have been linked to the global decline in bee populations by a large body of science. The study, titled “First national-scale reconnaissance of neonicotinoid insecticides in streams across the USA” and published in Environmental Chemistry,  was conducted from 2011 to 2014 and spans 24 states and Puerto Rico. Researchers found that at least one of the six neonicotinoids tested by USGS researchers was found in more than half of the sampled streams. Detections of the  six  neonicotinoids varied:    imidacloprid  was found in 37 percent of the samples in the national study, clothianidin in 24 percent, thiamethoxam in 21 percent, dinotefuran in 13 percent, acetamiprid in 3 percent, and thiacloprid was not detected. Both urban and agricultural uses contributed to neonic concentrations in streams, with imidacloprid occurrence significantly related to the amount of urban land-use and clothianidin and thiamethoxam significantly related to the amount of cultivated crop. “In the study, neonicotinoids occurred throughout the year in urban streams […]

(Beyond Pesticides, August 19, 2015) Local fogging for  mosquito control turned tragic for a Palo Alto, California beekeeper who lost hundreds of honey bees from his backyard hives. The beekeeper, who also produces organic honey, now fears his honey is contaminated. The fogging, which occurred last month, was in response to positive tests for West Nile virus in mosquito samples. Many mosquito control pesticides are toxic to honey bees and given the declining populations of pollinators, vector control officials are being asked to carefully consider the risks associated with pesticide spraying. According to the local NBC affiliate, beekeeper Rondolph Tsien believes he was not given sufficient time to protect his bees from the mosquito fogging and, despite trying to cover his hives with a tarp to protect his bees from drifting pesticides, many were lost. A mosquito sample tested positive for West Nile virus about one mile from Mr. Tsien’s home, putting his property in the catchment area for fogging. Mr. Tsien worries the surviving bees will produce contaminated honey that can no longer be labeled organic. A Santa Clara County Vector Control representative stated during an interview that the county uses  an “extremely low dose” of pesticides during fogging […]

(Beyond Pesticides, August 18, 2015) Research looking at corn production  across the Northern Great Plains finds that fields with lower insect biodiversity are at greater risk for pest problems, showing that insect diversity can reduce the need for pesticides, yet again highlighting the critical need for biodiversity in a resilient and sustainable food production system. The research article, Trading Biodiversity for Pest Problems, is published in the July 31 issue of Science Advances, and explores how current chemical-intensive  practices have resulted in altered pesticide use patterns, land use intensification, and landscape simplification, all of which threaten biodiversity in and near farms. The findings suggest that farming practices that promote insect biodiversity is  an effective way to control pests without the use of harmful pesticides. Scientists Jonathan Lundgren, PhD, an entomologist at the U.S. Department of Agriculture—Agricultural Research Service (USDA-ARS), and Scott Fausti, PhD, an economics professor at South Dakota State University looked at insect diversity in cornfields on 53 different eastern South Dakota farms. The researchers evaluate fields that do not use insecticides or crops that are genetically engineered (GE), which may  influence corn insect communities. They also specifically identify insect species during the time in the corn’s life cycle […]

(Beyond Pesticides, August 12 2015) Last week, the City of Plattsburgh, New York, unanimously approved a policy that encourages city departments and city residents to reduce and eventually eliminate their use of toxic pesticides, such as neonicotinoids and glyphosate. In the same resolution, city residents and department heads are also encouraged to refrain from genetically modified organism (GMO) cultivation, though they recognize there is very little of that taking place within Plattsburgh city limits. While this policy can only be used to discourage the use of pesticides and GMOs, not implement an outright ban, due to preemptive New York state law that occupies the field of pesticide regulation, city officials are hopeful that they will be able to use their influence to implore the state of New York and U.S. legislators to take statewide and nationwide measures on the production of GMO crops and to curb the use of toxic pesticides. The language of the resolution, sponsored by Councilman Mike Kelly, cites the health of honey bees and other insects as one of the main reasons for encouraging citizens to refrain from the use of pesticides in the practice of lawn care and beautification. It also specifically names neonicotinoids as […]

(Beyond Pesticides, August 5, 2015) The United Kingdom (UK) is poised to harvest higher than expected yields of winter oilseed rape (canola) in its first neonicotinoid-free growing season since the European moratorium on neonicotinoids went into place in 2013. This bumper harvest comes amid the recent approval of an emergency exemption for neonicotinoid use on the crop in certain areas of the UK, and disproves the industry argument  that  the crop would falter without the use of neonicotinoids. Activists argue that these findings show there is ”˜no emergency’ for neonicotinoid use and that the current moratorium should remain in effect. The first harvest results of winter oilseed rape (canola) planted without neonicotinoid seed treatments have come in – and farmers are experiencing a better than usual crop. Figures for the first oilseed rape harvest since the European-wide ban on neonicotinoid pesticides was introduced show that the yield so far is higher than the average for the previous decade, when the chemicals were used on the majority of oilseed rape grown in the UK. Farmers Weekly, a leading multimedia information service for farmers and agricultural businesses, has reported that yields are up by as much as eight percent. The European Union […]

(Beyond Pesticides, August 4, 2015) Nearly every food available for purchase at the U.S. Congressional Dining Hall contains detectable levels of neonicotinoids (neonics), chemical insecticides implicated in the global decline of wild and managed pollinators. The results of a new study, performed by the American Bird Conservancy (ABC) and the Harvard T.H. Chan School of Public Health, reveals how reliance on these toxic chemicals can both directly and indirectly affect  our food supply. Authors of the study hope the results will build Congressional support for the Saving America’s Pollinators Act of 2015, which would suspend the use of neonics while an independent review analyzes the chemical’s effects to birds, pollinators, and other wildlife. Researchers for the study conducted two rounds of food testing, the first in January, and the second in May 2015. Approximately half of samples were taken from the House Longworth Cafeteria and half from Senate Dirksen Cafeteria in Washington, D.C. In total, 66 food samples were tested for the presence of neonicotinoids. Of that, 60, or 91% of samples tested positive for one neonic, and 47, or 71% of samples had two or more neonics present. “We were surprised to find that most foods contained multiple neonicotinoids, […]

(Beyond Pesticides, July 28, 2015) Data published from the Harvard School of Public Health reveals  neonicotinoids (neonics), a class of chemicals implicated in the global decline of honey bees and other pollinators, in over 70% of both pollen and honey samples collected throughout the state of Massachusetts during months when bees are most actively foraging. The results of this study have grave  implications for pollinator health, as even minute, near-infinitesimal doses of neonics can cause sublethal impacts that compromise the health of entire bee colonies. The Harvard study, led by Chensheng (Alex) Lu, PhD, and published in the Journal of Environmental Chemistry, took monthly honey and pollen samples from 62 volunteered bee hives between April and August 2013. The 219 pollen and 53 honey samples were then analyzed for the presence of eight neonic insecticides. Every month, in every location, researchers found neonics in the pollen and honey collected by bees. In total, 73% of pollen samples and 72% of honey samples contained at least one neonicotinoid at levels which could result in sublethal harm. While previous studies have tested the presence of neonics at a single point in time, this is the first study to show the long-term persistence […]