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Idaho Cereal Leaf Beetle ( Oulema melanopus ) Project Update 2006

Idaho Cereal Leaf Beetle ( Oulema melanopus ) Project Update 2006. Ben Simko Mike Cooper Division of Plant Industries. Cooperators. Brad Brown , University of Idaho, Parma Research and Extension Center Dan Bean, Colleen Jandreau Colorado Department of Agriculture, Palisades CO

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Idaho Cereal Leaf Beetle ( Oulema melanopus ) Project Update 2006

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  1. Idaho Cereal Leaf Beetle (Oulema melanopus) Project Update 2006 Ben Simko Mike Cooper Division of Plant Industries

  2. Cooperators • Brad Brown, University of Idaho, Parma Research and Extension Center • Dan Bean, Colleen Jandreau Colorado Department of Agriculture, Palisades CO • USDA PPQ CAPS Biocontrol Project Funding

  3. CLB Questions • What is the economic impact on small grain production in the various ID production areas? • What are appropriate economic thresholds for our market classes of grain? • What is the impact of native generalist predators and T. julis on CLB population levels (egg predation by coccinellids)? • Why did we experience lower CLB population levels in SW Idaho in 2006?

  4. Egg parasite Anaphes flavipes ISDA CLB Biological Control Project Larval Parasite Tetrastichus julis

  5. University of Idaho Parma Experiment Station

  6. CLB Egg Parasite Nursery University of Idaho Parma Experiment Station

  7. CLB Egg Parasite Nursery 2.14 acres

  8. ID, CLB Egg Parasite Anaphes flavipes 2005 Releases and Observations • June 13 - Recovered 2 more adult A. flavipes • June 14 - 4th release of CO parasites (931) 52 eggs collected for parasites • June 24 - no parasites in eggs observed or recovered • June 29 - 50 eggs collected for parasite recovery • July 3 - 17 out of 50 appear to be parasitized • July 10 - recovered several adult A. flavipes

  9. ID, CLB Egg Parasite Anaphes flavipes 2006 Observations June 8 Released 1,200 eggs (83% parasitized) from CDA Palisades

  10. Larval Parasite Tetrastichus julis ISDA CLB Biological Control Project Egg parasite Anaphes flavipes

  11. T. julis larvae recovered from CLB collected in SW Idaho June 2002 Mike Cooper, Idaho State Department of Agriculture

  12. (3 p/larva) (4 p/larva)

  13. (4 p/larva) (6 p/larva)

  14. (5 p/larva) (6 p/larva)

  15. Next Season - 2006 • Continue CLB egg survey for overwintering A. flavipes • Renew effort to release and establish population of A. flavipes • Use the U of I Parma fields as T.julis insectary. • CLB biocontrol project funding uncertain?

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