Effects of Pesticides on Pollinators: Past Practices, Current Developments, and Future Directions

Effects of Pesticides on Pollinators: Past Practices, Current Developments, and Future Directions

THE EFFECTS OF PESTICIDES ON POLLINATORS: PAST PRACTICES, CURRENT DEVELOPMENTS, AND FUTURE DIRECTIONS Erik Johansen, WSDA Olympic Invasives Working Group Sequim, WA November 18, 2014 Washington State – West Coast Past Practices • Risk Management: Acute Toxicity of Pesticides to Adult Honey Bees from Agricultural Uses. – Most Bee Poisoning Incidents: Foliar Insecticides, – Highly Toxic (Acute LD50 2 Micrograms or Less), – Extended Residual Toxicity (RT25 More than 8 Hours). • Concerns with Arsenical and Dinitro Herbicides. • In General, Bee Poisoning from Systemic Insecticides was not a Major Concern. • Limited Information on Other Species of Bees. History of Bee Poisoning / Pollination • Late 1800’s: Crops Pollinated by Bees in WA - Berries, Fruit Trees (esp. Apples), Seed Crops. • Late 1800’s: Honey Bees Killed by Arsenical Insecticides on Fruit Trees (Northeast US). • 1901: Regulation of Pesticides in WA. • 1910: Federal Regulation of Pesticides. • 1913: WSDA was created. History of Bee Poisoning / Pollination • 1921: First Reported Honey Bee Kill Incidents in Washington. – Copper Acetoarsenite (Paris Green) on Apples. – Melander, Washington State College: Application During Bloom Should be Prohibited. • 1920’s: Honey Bees Killed by Calcium Arsenate on Cotton (Southern US). • 1940’s: Honey Bees Killed by Parathion (Organophosphate). History of Bee Poisoning / Pollination • 1952 – 2002: Johansen and Mayer, Washington State University (WSU), Conducted Research on Bee Poisoning. • 1950’s – 1980’s(?): Atkins, University of California – Riverside, Conducted Similar Research. History of Bee Poisoning / Pollination • 1950’s: Honey Bees Killed by Dieldrin (Organochlorine). • 1960’s: Honey Bees Killed by Carbaryl (N- methyl Carbamate) use on Corn. WSDA adopted rules to protect bees. • 1970: USEPA was Created. • 1970’s: Honey Bees Killed by Microencapsulated Methyl Parathion (Organophosphate) on Apples. History of Bee Poisoning / Pollination • 1990’s: Honey Bees Killed by Acephate on Mint, Carbaryl on Apples, Chlorpyrifos on Carrot Seed Crop, Methyl Parathion EC on Canola, Microencapsulated Methyl Parathion on Apples. • 2000: USEPA Developed a Draft Pesticide Registration (PR) Notice on Pollinator Protection. – Not Finalized, Lack of Consensus. • 2002: Honey Bees Killed by Thiamethoxam (Neonicotinoid) on Pears. Current Developments • Growing Awareness: Risk Management to Protect Bees from Pesticides Needs Improvement. – Acute and Chronic Effects, Adult and Larval Effects, Multiple Species of Bees, Multiple Routes of Exposure, Agricultural and Ornamental Use. • Synergism (Insecticides, Fungicides, Miticides)? • Interactions with Pathogens? • Concerns with Nitroguanidine Neonicotinoids? – Foliar and Systemic (Agricultural and Ornamental Use), Dust (Seed Treatment Use). Bee Poisoning Incidents • 2007 & 2008: Bumble Bee Poisoning in Delaware from Imidacloprid use on Linden (Ornamental - Systemic). • 2008: Honey Bee Poisoning in Germany from Clothianidin in Fugitive Dust (Corn Seed Treatment). • 2012-2014: Honey Bee Poisoning in Canada from Clothianidin and Thiamethoxam in Fugitive Dust (Corn Seed Treatment). Bee Poisoning Research • 2010: High Levels of Miticides and other Pesticides in Honey Bee Colonies (Mullin et al). (11 Herbicides Detected.) • 2011: Sublethal Effects of Pesticide Residues in Brood Comb (Wu et al, WSU). (2 Herbicides Detected.) • 2013: Exposure to Multiple Cholinergic Pesticides Impairs Learning (Williamson and Wright). • 2013: Multiple, Interrelated Causes of Colony Mortality (vanEngelsdorp et al). • 2013: Comparative Toxicities and Synergism of Insecticides and Fungicides to Honey Bees & Mason Bees (Biddinger et al). Acute Toxicity of Five Pesticides Practically Non-Toxic to Bees • Clopyralid, Imazapyr, Triclopyr – Honey Bee Contact LD50: >100 ug/bee. • Glyphosate – Honey Bee Oral and Contact LD50: >100 ug/bee. Highly Toxic to Bees • Imidacloprid – Honey Bee Oral LD50: 3.7 to 40.9 ng/bee, – Honey Bee Contact LD50: 59.7 to 242.6 ng/bee. Society of Environmental Toxicology and Chemistry (SETAC) • 2011: SETAC Pellston Workshop on Pesticide Risk Assessment for Pollinators. – 48 Participants (Africa, Australia, Europe, North and South America). – 5 Workgroups. – Best Available Science. – Book was Published in 2014. USEPA / Health Canada / California Dept of Pesticide Regulation • 2012: White Paper in Support of the Proposed Risk Assessment Process for Bees. – Protection Goals. – Exposure: Foliar and Systemic. – Effects: Adult and Larval. – Tiered Approach. – Risk Characterization. – Guidance was Finalized in 2014. USDA / USEPA • 2012: National Stakeholders Conference on Honey Bee Health. – Multiple Factors (Including Pesticides) Contributing to Decline in Honey Bee Health. – Report was Published in 2013. USEPA • 2011-2014: Pesticide Program Dialogue Committee (PPDC) Pollinator Protection Workgroup. – Improve Clarity of Statements on Pesticide Labels (i.e. “Foraging” vs. “Visiting”). – Develop Guidance on Bee Kill Investigations. – Residual Time to 25% Bee Mortality (RT25) Data Should be Available to Public. – Information on Best Management Practices (BMPs). USEPA • 2013: Label Requirements for Nitroguanidine Neonicotinoids. – Different Requirements for Different Crops / Sites. – Reference to Pesticide Environmental Stewardship Website. Pesticide Environmental Stewardship • Coordinated by North Carolina State University. • Contributors from Several Universities, Many Supporting Organizations. • Pollinator Protection Information for Different Regions, Including BMPs. Pollinator Partnership / North American Pollinator Protection Campaign • 2013-2014: Corn Dust Research Consortium. – Administered by Pollinator Partnership. – Multi-stakeholder Coalition that Issued 37 Recommendations. – Research by University of Guelph, Iowa State University, Ohio State University. Washington State Dept of Agriculture • 2013: 10 Ways to Protect Bees from Pesticides. – Beekeepers Concerned with Neonicotinoid Use by Homeowners in Thurston County. – Brochure for Homeowners, Pesticide Use on Ornamental Plants (Foliar and Systemic). Oregon State University • 2013: How to Reduce Bee Poisoning from Pesticides. – Developed by WSU in 1960. – Agricultural Use. Oregon Dept of Agriculture • 2013-2014: Serious Bee Kills Incidents in Oregon Involving Bumble Bees. – Prohibited Use of Dinotefuran or Imidacloprid on Linden Trees (Tilia species), Developed Brochures. Mississippi State University • 2014: Mississippi Honey Bee Stewardship Program. – Developed by Stakeholders. – Emphasis on Improving Communication. North Dakota Dept of Agriculture • 2014: North Dakota Pollinator Plan. – Developed by Stakeholders. – BMPs for Beekeepers, Growers, and Applicators. The White House • 2014: Creation of Federal Strategy to Promote Health of Honey Bees and Other Pollinators. – Pollinator Health Task Force, USDA and USEPA. – National Pollinator Health Strategy. – Increase and Improve Pollinator Habitat. Future Actions • American Association of Pesticide Control Officials (AAPCO). – Guidance on Managed Pollinator Protection Plans. • PPDC Pollinator Protection Workgroup. – Additional Suggestions for Risk Management. • USDA. – Relative Attractiveness of Crop Plants to Bees. • USEPA. – Review Managed Pollinator Protection Plans, Complete Registration Review for Neonicotinoids. Future Directions • Implement Appropriate Risk Management Based on Risk Assessment. – Assumptions and Uncertainties Clearly Identified. • Collaborative Efforts Between Stakeholders, Regulatory and Non-regulatory Methods. – Applicator Training, BMPs, Communication, Label, Managed Pollinator Protection Plans. • Research on Effectiveness? • Improved Bee Kill Incident Reporting? • Monitoring of Sentinel Honey Bee Colonies? Questions? Erik Johansen, WSDA (360) 902-2078 [email protected] agr.wa.gov .

View Full Text

Details

  • File Type
    pdf
  • Upload Time
    -
  • Content Languages
    English
  • Upload User
    Anonymous/Not logged-in
  • File Pages
    28 Page
  • File Size
    -

Download

Channel Download Status
Express Download Enable

Copyright

We respect the copyrights and intellectual property rights of all users. All uploaded documents are either original works of the uploader or authorized works of the rightful owners.

  • Not to be reproduced or distributed without explicit permission.
  • Not used for commercial purposes outside of approved use cases.
  • Not used to infringe on the rights of the original creators.
  • If you believe any content infringes your copyright, please contact us immediately.

Support

For help with questions, suggestions, or problems, please contact us