dan molloy - zebra mussels presentation 9/12/11

Download Dan Molloy - Zebra mussels presentation 9/12/11

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  • 1. A Formidable Foe: The Search for an Environmentally Safe Zebra Mussel Control Method Daniel P. Molloy, Ph.D. Research Scientist: State University of New York at Albany Consultant: Molloy & Associates

2.

  • Michael Schmidt
  • Assistant Superintendent
  • Minneapolis Park and Recreation Board
  • Eric Evenson
  • Administrator
  • Minnehaha Creek Watershed District
  • Lois Sinn Lindquist
  • Executive Director
  • Minnesota Waters

3.

  • Biologist
  • Aquatic freshwater biologist
  • Study diseases of aquatic organisms
  • Diseases in invertebrate aquatic organisms
  • Especially diseases of pest organisms
    • Fundamentalresearch

Who is Dan Molloy? 4. 5.

  • Biologist
  • Aquatic freshwater biologist
  • Study diseases of aquatic organisms
  • Diseases in invertebrate aquatic organisms
  • Especially diseases of pest organisms
    • Fundamental research
    • Appliedresearch (can we control the pest with the disease)

Who is Dan Molloy? 6. 7.

  • Biologist
  • Aquatic freshwater biologist
  • Study diseases of aquatic organisms
  • Diseases in invertebrate aquatic organisms
  • Especially diseases of pest organisms
    • Fundamental research
    • Appliedresearch (can we control the pest with the disease)

Who is Dan Molloy? 8. Who is my (our) foe? 9. 10. 11. 12. Two North American SpeciesQuagga mussel Dreissenarostriformis bugensis Zebra mussel Dreissena polymorpha 13. 14. 15. 1988 Zebra mussels were first discovered in Lake St. Clair and Lake Erie 16.

  • http://nas.er.usgs.gov/taxgroup/mollusks/zebramussel/maps/current_zm_quag_map.jpg

current distribution ofDreissenain North America 17. Credit: Minnesota DNR 18. How did these mussels get to North America? 19. 20. 21. So whats the problem? 1. Ecological 2. Recreational 3. Industrial 22. Ecological Impacts 23. 24. 25. Ecological effects of filtration byDreissenaspp.

  • Decrease in phytoplankton
  • Decrease in zooplankton
  • Increase in water transparency
  • Increase in macrophytes
  • Alteration of fish community
  • Alteration of benthic (bottom) community

26. Eurasian water-milfoil 27. 28. 29. 30. Recreational Impacts Cut foot Pelican Lake, MN(Credit - Bob Gilsdorfto Fargo The Forum ) 31. Industrial Impacts 32. 33. Weeks and weeks of chlorination How to reduce the use of chlorination and other biocides?? Trihalomethanes Dioxins 34. Find a control method to reduce the use of broadspectrum chemicals. Biological control 35. Find a control method to reduce the use of broadspectrum chemicals. Discover a bacterium with specificity toDreissenaspp.? Biological control Why abacterialcontrol agent? 36. 37. 38. 39. For decades polluting broadspectrum chemical insecticides were used for black fly control in New York State 40. 41. B t i Bacteria used to control black fly larvae 42. Metropolitan Mosquito Control District 165 small streams 28 large river sites Program began in 1984 Bti bacteria are applied: 43. Use of bacteria successful against black flies Maybe success againstDreissenaspp. too?? ????? 44. 45. Pseudomonas fluorescensCL145A 46. Dreissenaspp. die following ingestion of large quantities ofP. fluorescenscells IndividualP. fluorescenscells are ~1 x 2 m 2 mm 47. Trials within power plants NYPA Hydro-electric power plant Crescent, NY Mohawk River RG&E Coal-fired power plant Rochester, NY Lake Ontario 48. Lab trials = 100% kill. Veligers appear to be the most susceptible life stage. 49. Specificity ofPf- CL145A product TroutSalmo trutta Fathead minnowPimephales promelas Bluegill sunfishLepomis macrochirus Freshwater ciliateColpidium colpoda ZooplanktonDaphnia magna Mytilus edulis, Pyganodon grandis, Lasmigona compressa, Strophirus undalatus, Lampsilis radiata, Pyganodon cataracta, Elliptio complanata 7 Bivalve species Mallard duckAnas platyrhynchos Freshwater shrimpHyalella azteca 50. IfPf -CL145A is going to really be used to reduce the use of chemical biocides in pipes, my New York State government lab needed to partner with a company.. ..one with expertise in commercializing biopesticides 51. Pf -CL145AProduct name:Zequanox 52. OK, the future ofPf -CL145A looks promising for use in pipes.... but could it be used to in lakes and rivers? We will not know without additional research 53. Thecurrentoverriding approach in the fight against zebra mussels isCONTAINMENT SLOW the spread! = Inspections 54. Minnesota has been and continues to be a leader in educating its citizen about slowing the spread 55. Federalagencies University of Minnesota Sea Grant 56. State governmental agencies 57. Localgovernmental agencies 58. Minnesotan citizengroups 59. OK, the future ofPf -CL145A looks promising for use in pipes.... but could it be used to in lakes and rivers? We will not know if thePf -CL145A bacterium can be used for containment until it is field tested 60.

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