emerald ash borer
DESCRIPTION
Emerald Ash Borer. EAB Life Cycle. David Cappaert , MSU. David Cappaert , MSU. Dan Herrms , OSU. Marianne Prue , Ohio DNR. Houping Liu, MSU. Marianne Prue , Ohio DNR. EAB Lifecycle. EAB Life Cycle. David Cappaert , MSU. EAB Lifecycle. EAB Life Cycle. EAB Lifecycle. - PowerPoint PPT PresentationTRANSCRIPT
Minnesota First Detectors
Emerald Ash Borer
Minnesota First Detectors David Cappaert, MSU
Marianne Prue, Ohio DNR
Marianne Prue, Ohio DNR
Dan Herrms, OSU
David Cappaert, MSU
Houping Liu, MSU
EAB Life Cycle
Minnesota First Detectors
EAB Lifecycle
David Cappaert, MSU
EAB Life Cycle
Minnesota First Detectors
EAB LifecycleEAB Life Cycle
Minnesota First Detectors
EAB LifecycleEAB Life Cycle
Minnesota First Detectors
EAB Lifecycle
David Cappaert, MSU
EAB Life Cycle
Minnesota First Detectors
Host Trees
Attacks all native ash trees Black, green, and white are
native to MN Some preliminary evidence
that blue ash may show some resistance
Manchurian ash shows resistance (not N.A. sp.)
Hybrid crosses not resistant (so far)
Mountain ash (not a true ash) is not attacked
David Cappaert
Minnesota First Detectors
How Does EAB Kill Trees?
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EAB Distribution
Minnesota First Detectors
EAB Distribution
Minnesota First Detectors
EAB Distribution
St Paul 1St Paul 2
Shoreview
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EAB Distribution
Victory / Houston
Winona
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EAB Status
0 2 4 6 8 10 12
Years Since Introduction
% Tree Mortality
EAB Population Size
This is a hypothetical example of how EAB population
increase and resulting tree mortality may occur.
Minnesota First Detectors
EAB Status
0 2 4 6 8 10 12
Years Since Introduction
% Tree Mortality
EAB Population Size
St Paul 1Winona
Shore-view
St Paul 2Houston
This is a hypothetical example of how EAB population
increase and resulting tree mortality may occur.
Minnesota First Detectors
EAB Infestations in MN
I-90 – Nodine Exit, Winona County
EAB present 5-6 years?
5-10% of ash in area were dead
Most of rest had noticeable decline
Minnesota First Detectors
EAB Infestations in MN
Nodine Exit trees > 100 larval galleries /
square meter of bark
Minnesota First Detectors
EAB Infestations in MN
Nodine Exit trees Woodpeckers could
barely fly anymore
Minnesota First Detectors
EAB Infestations in MN
St Paul 1 – found 2009
EAB present 3-4 years
No dead trees Canopy
thinning on ~50 trees
Minnesota First Detectors
EAB Infestations in MN
St Paul 1 – found 2009 Woodpecking apparent on
declining trees and trees without decline
Minnesota First Detectors
EAB Infestations in MN
Woodpecking a better indicator of EAB than decline
EAB Negative
EAB Positive
Minnesota First Detectors
EAB Infestations in MN
St Paul 2 – Summit / Dale Area
~4 years old when found Decline, woodpecking,
bark cracks on < 10 trees
Minnesota First Detectors
EAB Infestations in MN
Shoreview ~3 years old when found Decline in one tree
initially – no woodpecking seen in July
Minnesota First Detectors
EAB Infestations in MN
Shoreview ~3 years old when found Decline in one tree
initially – heavy woodpecking by November – also showing up on other trees in area
Minnesota First Detectors
EAB Infestations in MN
Houston ~3 years old when found Only found due to
extensive searching
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Estimation Age of Infestation
Increasing Numbers
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Sanitation
Chemicals
Biological Control
EAB Suppression
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Identify EAB infested trees via woodpecking
Remove infested trees prior to adult emergence
EAB Sanitation
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EAB Chemicals
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Biological control
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Egg parasitoid, Oobius agrili
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H. Liu, USDA
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Larval parasitoid, Spathius agrili
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Spathius agrili
J. LelitoJ. Plunkett
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Larval parasitoid, Tetrastichus planipennisi
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Tetrastichus planipennisiJ. Lelito
Minnesota First Detectors
EAB Quarantine
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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.
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Regulated ArticlesEmerald ash borer in any living stage
of developmentAsh treesAsh limbs / branchesAsh stumps and rootsAsh logsAsh chips (wood or bark)Firewood of any non-coniferous
species
EAB Quarantine
Minnesota First Detectors
NO
OK
Maybe
EAB Quarantine