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Understanding the Emerald Ash Borer Life Cycle and Impact on Ash Trees

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evan
32 diapositives · 487 Views · Jul 27, 2014

The Emerald Ash Borer (EAB) is an invasive beetle that poses a significant threat to ash trees in North America. This article provides insight into the EAB life cycle, its distribution, and its devastating effects on ash trees. Evidence of EAB infestation includes woodpecking and noticeable tree decline. Effective management strategies, including sanitation, chemical treatments, and biological control, are crucial in suppressing EAB populations. Learn how to identify and manage infested trees to protect our valuable ash resources.

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  1. Emerald Ash Borer

  2. EAB Life Cycle David Cappaert, MSU David Cappaert, MSU Dan Herrms, OSU Marianne Prue, Ohio DNR Houping Liu, MSU Marianne Prue, Ohio DNR

  3. EAB Lifecycle EAB Life Cycle David Cappaert, MSU

  4. EAB Lifecycle EAB Life Cycle

  5. EAB Lifecycle EAB Life Cycle

  6. EAB Lifecycle EAB Life Cycle David Cappaert, MSU

  7. How Does EAB Kill Trees?

  8. EAB Distribution

  9. EAB Distribution

  10. EAB Distribution Shoreview St Paul 1 St Paul 2

  11. EAB Distribution Winona Victory / Houston

  12. EAB Status This is a hypothetical example of how EAB population increase and resulting tree mortality may occur.

  13. EAB Status St Paul 1 Winona St Paul 2 Houston Shore- view This is a hypothetical example of how EAB population increase and resulting tree mortality may occur.

  14. Recognizing EAB Infested Trees • I90 – Nodine Exit, Winona County • EAB present 5-6 years? • 5-10% of ash in area were dead • Most of rest had noticeable decline

  15. Recognizing EAB Infested Trees • Nodine Exit trees • > 100 larval galleries / square meter of bark

  16. Recognizing EAB Infested Trees • Nodine Exit trees • Woodpeckers could barely fly anymore

  17. Recognizing EAB Infested Trees • St Paul 1 – found 2009 • EAB present 3-4 years • No dead trees • Canopy thinning on ~50 trees

  18. Recognizing EAB Infested Trees • St Paul 1 – found 2009 • Woodpecking apparent on declining trees and trees without decline

  19. Recognizing EAB Infested Trees • Woodpecking a better indicator of EAB than decline EAB Positive EAB Negative

  20. Recognizing EAB Infested Trees • St Paul 2 – Summit / Dale Area • ~4 years old when found • Decline, woodpecking, bark cracks on < 10 trees

  21. Recognizing EAB Infested Trees • Shoreview • ~3 years old when found • Decline in one tree initially – no woodpecking seen in July

  22. Recognizing EAB Infested Trees • Shoreview • ~3 years old when found • Decline in one tree initially – heavy woodpecking by November – also showing up on other trees in area

  23. Recognizing EAB Infested Trees • Houston • ~3 years old when found • Only found due to extensive searching

  24. Recognizing EAB Infested Trees Increasing Numbers

  25. EAB Suppression • Sanitation • Chemicals • Biological Control

  26. EAB Sanitation • Identify EAB infested trees via woodpecking • Remove infested trees prior to adult emergence

  27. EAB Chemicals

  28. EAB Biocontrol

  29. EAB Quarantine

  30. EAB Quarantine • No Regulated Articles are legally allowed to move outside of a quarantine (untreated or treated), unless they are accompanied by a certificate. Certificates are only available when a compliance agreement is signed between the Minnesota Department of Agriculture and the firm interested in moving the regulated article.

  31. EAB Quarantine • Regulated Articles • Emerald ash borer in any living stage of development • Ash trees • Ash limbs / branches • Ash stumps and roots • Ash logs • Ash chips (wood or bark) • Firewood of any non-coniferous species

  32. EAB Quarantine NO Maybe OK