Vermont Forest Pest First Detector Program Forests, Parks & Recreation Agriculture, Food & Markets...
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Transcript of Vermont Forest Pest First Detector Program Forests, Parks & Recreation Agriculture, Food & Markets...
![Page 1: Vermont Forest Pest First Detector Program Forests, Parks & Recreation Agriculture, Food & Markets Presented by: Rhonda Mace USDA-APHIS.](https://reader037.fdocuments.in/reader037/viewer/2022110322/56649d135503460f949e6da1/html5/thumbnails/1.jpg)
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Forests, Parks & RecreationAgriculture, Food & Markets
Module 3C:Vermont Forest Pest
First Detector Program
Presented by:
Rhonda MaceUSDA-APHIS
![Page 2: Vermont Forest Pest First Detector Program Forests, Parks & Recreation Agriculture, Food & Markets Presented by: Rhonda Mace USDA-APHIS.](https://reader037.fdocuments.in/reader037/viewer/2022110322/56649d135503460f949e6da1/html5/thumbnails/2.jpg)
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Why Should We Be Concerned about the Asian Longhorned Beetle?
ALB attacks and kills a wide range of native hardwood trees, including maple, elm, birch and ash.
Infestation can go a years without being detectedInsecticides aren’t an economically feasible option
for a wide scale infestation50% of VT forests are host trees
![Page 3: Vermont Forest Pest First Detector Program Forests, Parks & Recreation Agriculture, Food & Markets Presented by: Rhonda Mace USDA-APHIS.](https://reader037.fdocuments.in/reader037/viewer/2022110322/56649d135503460f949e6da1/html5/thumbnails/3.jpg)
**Chicago, Illinois and Hudson County, New Jersey and Islip, NY has since declared successful eradication of ALB.
Map adapted from Jim Esden, VT Forests, Parks, and Recreation
2010 LEAP Workshop
OhioDetected in Bethel
July 2011
MassachusettsDetected in Boston
area in 2010
![Page 4: Vermont Forest Pest First Detector Program Forests, Parks & Recreation Agriculture, Food & Markets Presented by: Rhonda Mace USDA-APHIS.](https://reader037.fdocuments.in/reader037/viewer/2022110322/56649d135503460f949e6da1/html5/thumbnails/4.jpg)
Why is ALB Difficult to Control?
ALB often attacks the tops of trees first.ALB has no known natural enemies in the USA or
Canada.Detection is based only upon visual surveys of trees.Humans can easily aid in the spread of this pest by
moving infested wood, especially firewood.Attacks upwards of 24 species of trees
![Page 5: Vermont Forest Pest First Detector Program Forests, Parks & Recreation Agriculture, Food & Markets Presented by: Rhonda Mace USDA-APHIS.](https://reader037.fdocuments.in/reader037/viewer/2022110322/56649d135503460f949e6da1/html5/thumbnails/5.jpg)
Asian longhorned beetle life cycle
![Page 6: Vermont Forest Pest First Detector Program Forests, Parks & Recreation Agriculture, Food & Markets Presented by: Rhonda Mace USDA-APHIS.](https://reader037.fdocuments.in/reader037/viewer/2022110322/56649d135503460f949e6da1/html5/thumbnails/6.jpg)
Reproduction1. Males and females travel
infrequently, they use physical contact and pheromones to find mates.
2. Lay eggs in shallow dug-out areas of the bark (oviposition sites) from mid-July-August.
3. Eggs hatch in 10-15 days.
![Page 7: Vermont Forest Pest First Detector Program Forests, Parks & Recreation Agriculture, Food & Markets Presented by: Rhonda Mace USDA-APHIS.](https://reader037.fdocuments.in/reader037/viewer/2022110322/56649d135503460f949e6da1/html5/thumbnails/7.jpg)
Larvae
1st and 2nd instar larvae feed on the cambium layer.
3rd, 4th and 5th instars feed on and tunnel through the sapwood and heartwood.
Larval and pupal stages over-winter in the tree.
![Page 8: Vermont Forest Pest First Detector Program Forests, Parks & Recreation Agriculture, Food & Markets Presented by: Rhonda Mace USDA-APHIS.](https://reader037.fdocuments.in/reader037/viewer/2022110322/56649d135503460f949e6da1/html5/thumbnails/8.jpg)
Pupae
5th instar develops into a pupa.Pupal stage is approximately 2-3
weeks.After pupation, the insect emerges as
an adult.
![Page 9: Vermont Forest Pest First Detector Program Forests, Parks & Recreation Agriculture, Food & Markets Presented by: Rhonda Mace USDA-APHIS.](https://reader037.fdocuments.in/reader037/viewer/2022110322/56649d135503460f949e6da1/html5/thumbnails/9.jpg)
Adult BeetleEmerge summer to mid Fall.
Exit holes- nearly same diameter as a dime and round.
Beetle is 1 to 1 ½ inches
long.Irregularly shaped
whitespots on elytra
Life span ≥ 2 months.
![Page 10: Vermont Forest Pest First Detector Program Forests, Parks & Recreation Agriculture, Food & Markets Presented by: Rhonda Mace USDA-APHIS.](https://reader037.fdocuments.in/reader037/viewer/2022110322/56649d135503460f949e6da1/html5/thumbnails/10.jpg)
Adult Beetle cont’d…
Lay between 60 to 160 eggs.
Adult beetles have 1 generation per year.
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Susceptible Tree GeneraMaple including boxelder**Elm*Horsechestnut, buckeyes*Birch*Willow*Katsura treeSilk treeAshLondon plane PoplarEuropean mountain ashHackberry**,*=preferred host
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Identifying Adult ALB
Shiny, black body
Irregular, white, or yellowish splotches
Black and white,banded antennae
1 1/2
Body length is3/4 to 1 1/2 inches
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Commonly Confused With ALB
Whitespotted Sawyer Beetle• Native to northeastern US• Host trees are coniferous
Key differentiating features:• White spot between the wing
covers of the sawyer.• WSS is a bronzy, dull black,
while the Asian longhorned beetle is true black and shiny
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Commonly Confused With ALB
Northeastern Sawyer Beetle• Native to northeastern US• Host trees are coniferous
Key differentiating features:• Brown dappled wing
covers with dark and light spotting
• Faint white spot at top of wing covers
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CongratulationsYou have now completed Module 3C.
Please return to the First Detector Resource webpage at
www.vtinvasives.organd complete the Module 3C Quiz.
Rhonda MaceUSDA-APHIS-PPQ