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Joseph A. Skorupski Jr. 1 , Todd M. Koel 2 , and Carter Kruse 3 1 Division of Wildlife Resources

Effects of CFT Legumine Rotenone on Macroinvertebrates in Four Drainages of Montana and New Mexico. Joseph A. Skorupski Jr. 1 , Todd M. Koel 2 , and Carter Kruse 3 1 Division of Wildlife Resources 2 Yellowstone National Park, Fisheries and Aquatic Sciences Section 3 Turner Enterprises, Inc.

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Joseph A. Skorupski Jr. 1 , Todd M. Koel 2 , and Carter Kruse 3 1 Division of Wildlife Resources

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  1. Effects of CFT Legumine Rotenone on Macroinvertebrates in Four Drainages of Montana and New Mexico Joseph A. Skorupski Jr.1, Todd M. Koel2, and Carter Kruse3 1Division of Wildlife Resources 2Yellowstone National Park, Fisheries and Aquatic Sciences Section 3Turner Enterprises, Inc.

  2. Outline • Introduction • Restoration • Rotenone • Project goal • Objective • Methods • Results • Conclusions

  3. Fisheries Management • Piscicides important management tool • Native fish restoration • Contentious and criticized

  4. Rotenone • Concerns using rotenone • Public health • Environmental impacts • Applicator safety • 2005 CFT Legumine registered • Reduced/eliminated petroleum hydrocarbons • No synergist PB • Ecologically??

  5. Project Goal • Many conventional rotenones extensively studied • Vinson et al. 2010 • CFT Legumine lab study • Finlayson et al. 2010 What are the effects of CFT Legumine on macroinvertebrates?

  6. Objective • Comprehensive • 4 projects • Geographic regions • Vinson et al. 2010 • Lacking powerful interpretations • Impact and recovery • Treatment design • Sampling design • Taxa toxicity differences

  7. Treatment • Detox • Improvement??

  8. Statistical Analysis • EPT abundance and richness • One-way ANOVA and Tukey’s MRT • Question • Treatment (rotenone) and detox (KMnO4) • pre, immediate post and 1 year post • Control vs. treatments • Community composition: EPT • Non multi-dimensional scaling • Morisita-Horn index

  9. Specimen Creek A = pre vs. post B = pre vs. 1-yr C = sampling event vs. control Detox Cherry Creek Detox

  10. Comanche Creek A = pre vs. post B = pre vs. 1-yr C = sampling event vs. control Treatment Costilla Creek Treatment Detox

  11. EPT Abundance • Specimen Creek • Immediate post • Detox and Treatment(minimal) • Cherry Creek • Immediate post • Detox and Treatment(minimal) • Comanche Creek • Immediate post • Treatment • Costilla Creek • Immediate post • Treatment

  12. Specimen Creek Cherry Creek Treatment Detox Detox Treatment Treatment Treatment Costilla Creek ComancheCreek Treatment Treatment Detox Detox

  13. Conclusions • Treatment • Similar in geographic region • Minimal impact • Specimen and Cherry • Significantly influenced • Comanche and Costilla • Improvement? • Mangum and Madrigal 1999 • Hamilton et al. 2009 • Dosage? • Support Finlayson et al. 2010

  14. Detox • 3 projects impacted • Exposure • Distance downstream • Environmental conditions • Recovery one year after treatment

  15. Management Implications • Utilize CFT Legumine • Improved treatment design • Fishless areas • Partition drainage • < 8 hr. treatment • Minimal concentration • Long term studies • Extensive invertebrate sampling

  16. Acknowledgments • Todd Koel • Mike Ruhl • Jeff Arnold • Carter Kruse • Dan McGuire, Gerald Jacobi, Kirk Patten • Charles Randklev • Ben Lundeen • Erin Skorupski

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