Dan Molloy - Zebra mussels presentation 9/12/11

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  • Entomological research has been a minor part of my research in last few years
  • Entomological research has been a minor part of my research in last few years
  • What that dot is is a congealed pool of your blood…. that is one of the principla ways to distinguish BF vs Mosq bites
  • Entomological research has been a minor part of my research in last few years
  • Dan Molloy - Zebra mussels presentation 9/12/11

    1. 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. 2. <ul><li>Michael Schmidt </li></ul><ul><li>Assistant Superintendent </li></ul><ul><li>Minneapolis Park and Recreation Board </li></ul><ul><li>  </li></ul><ul><li>Eric Evenson </li></ul><ul><li>Administrator </li></ul><ul><li>Minnehaha Creek Watershed District </li></ul><ul><li>  </li></ul><ul><li>Lois Sinn Lindquist </li></ul><ul><li>Executive Director </li></ul><ul><li>Minnesota Waters </li></ul>
    3. 3. <ul><li>Biologist </li></ul><ul><li>Aquatic freshwater biologist </li></ul><ul><li>Study diseases of aquatic organisms </li></ul><ul><li>Diseases in invertebrate aquatic organisms </li></ul><ul><li>Especially diseases of pest organisms </li></ul><ul><ul><li>Fundamental research </li></ul></ul>Who is Dan Molloy?
    4. 5. <ul><li>Biologist </li></ul><ul><li>Aquatic freshwater biologist </li></ul><ul><li>Study diseases of aquatic organisms </li></ul><ul><li>Diseases in invertebrate aquatic organisms </li></ul><ul><li>Especially diseases of pest organisms </li></ul><ul><ul><li>Fundamental research </li></ul></ul><ul><ul><li>Applied research (can we control the pest with the disease) </li></ul></ul>Who is Dan Molloy?
    5. 7. <ul><li>Biologist </li></ul><ul><li>Aquatic freshwater biologist </li></ul><ul><li>Study diseases of aquatic organisms </li></ul><ul><li>Diseases in invertebrate aquatic organisms </li></ul><ul><li>Especially diseases of pest organisms </li></ul><ul><ul><li>Fundamental research </li></ul></ul><ul><ul><li>Applied research (can we control the pest with the disease) </li></ul></ul>Who is Dan Molloy?
    6. 8. Who is my (our) foe?
    7. 12. Two North American Species Quagga mussel Dreissena rostriformis bugensis Zebra mussel Dreissena polymorpha
    8. 15. 1988 – Zebra mussels were first discovered in Lake St. Clair and Lake Erie
    9. 16. <ul><li>http://nas.er.usgs.gov/taxgroup/mollusks/zebramussel/maps/current_zm_quag_map.jpg </li></ul>… current distribution of Dreissena in North America
    10. 17. Credit: Minnesota DNR
    11. 18. How did these mussels get to North America?
    12. 21. So what’s the problem? 1. Ecological 2. Recreational 3. Industrial
    13. 22. Ecological Impacts
    14. 25. Ecological effects of filtration by Dreissena spp. <ul><li>Decrease in phytoplankton </li></ul><ul><li>Decrease in zooplankton </li></ul><ul><li>Increase in water transparency </li></ul><ul><li>Increase in macrophytes </li></ul><ul><li>Alteration of fish community </li></ul><ul><li>Alteration of benthic (bottom) community </li></ul>
    15. 26. Eurasian water-milfoil
    16. 30. Recreational Impacts Cut foot Pelican Lake, MN (Credit - Bob Gilsdorf to Fargo The Forum )
    17. 31. Industrial Impacts
    18. 33. Weeks and weeks of chlorination How to reduce the use of chlorination and other biocides?? Trihalomethanes Dioxins
    19. 34. Find a control method to reduce the use of broadspectrum chemicals. Biological control
    20. 35. Find a control method to reduce the use of broadspectrum chemicals. Discover a bacterium with specificity to Dreissena spp.? Biological control Why a bacterial control agent?
    21. 39. For decades polluting broadspectrum chemical insecticides were used for black fly control in New York State
    22. 41. B t i Bacteria used to control black fly larvae
    23. 42. Metropolitan Mosquito Control District 165 small streams 28 large river sites Program began in 1984 Bti bacteria are applied:
    24. 43. Use of bacteria successful against black flies Maybe success against Dreissena spp. too?? ?????
    25. 45. Pseudomonas fluorescens CL145A
    26. 46. Dreissena spp. die following ingestion of large quantities of P. fluorescens cells Individual P. fluorescens cells are ~1 x 2  m 2 mm
    27. 47. Trials within power plants NYPA Hydro-electric power plant Crescent, NY Mohawk River RG&E Coal-fired power plant Rochester, NY Lake Ontario
    28. 48. Lab trials = 100% kill. Veligers appear to be the most susceptible life stage.
    29. 49. Specificity of Pf- CL145A product Trout Salmo trutta Fathead minnow Pimephales promelas Bluegill sunfish Lepomis macrochirus Freshwater ciliate Colpidium colpoda Zooplankton Daphnia magna Mytilus edulis, Pyganodon grandis, Lasmigona compressa, Strophirus undalatus, Lampsilis radiata, Pyganodon cataracta, Elliptio complanata 7 Bivalve species Mallard duck Anas platyrhynchos Freshwater shrimp Hyalella azteca
    30. 50. If Pf -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
    31. 51. Pf -CL145A Product name: Zequanox
    32. 52. OK, the future of Pf -CL145A looks promising for use in pipes.... but could it be used to in lakes and rivers? We will not know without additional research
    33. 53. The current overriding approach in the fight against zebra mussels is CONTAINMENT SLOW the spread! = Inspections
    34. 54. Minnesota has been and continues to be a leader in educating its citizen about slowing the spread
    35. 55. Federal agencies University of Minnesota Sea Grant
    36. 56. State governmental agencies
    37. 57. Local governmental agencies
    38. 58. Minnesotan citizen groups
    39. 59. OK, the future of Pf -CL145A looks promising for use in pipes.... but could it be used to in lakes and rivers? We will not know if the Pf -CL145A bacterium can be used for containment until it is field tested

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