Partnering native wasps and local volunteers to monitor ... · (hunting wasps) What’s involved in...
Transcript of Partnering native wasps and local volunteers to monitor ... · (hunting wasps) What’s involved in...
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BiosurveillancePartnering native wasps
and local volunteers to monitor for EAB
Colleen TeerlingEntomologist
Maine Forest Service
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The Enemy
• Killed tens of millions of trees since 2002
• Spread to 15 states and 2 provinces
• No effective natural enemies
• No tree resistance (100% death rate)
Emerald Ash Borer
One of the biggest problems…
No good method of monitoring for EAB
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Trap Trees Purple Traps
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An Ally
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Cerceris fumipennis
-Native wasp
-Solitary ground-nester (in colonies)
-Non-stinging
-Provisions its nest with adult buprestids (metallic wood-boring beetles)
-Is capable of finding EAB at low levels
BIOSURVEILLANCE
Family: Crabronidae(hunting wasps)
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What’s involved in a biosurveillance
program?
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Finding Colonies• Use knowledgeable, motivated volunteers
(professionals):– entomologists / forest health professionals /
field people– local Ent. Soc. members
• Combine search with regular field work• Use Google Earth • Showcase a ‘working’ colony in summer
– field training• Don’t start looking too early!
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After You Find Colonies?
• Now use the less knowledgeable (local) volunteers:– Master gardeners, city arborists, scouts, naturalist
groups, home schoolers, boys and girls clubs, families• Recruit & educate during winter (1 group -1 colony)
– target local volunteers– city arborists, tree wardens, town manager
• Get permission from landowners• Have field training sessions when wasps emerge• Ask them to look for other sites
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What do volunteers do?• ‘Steal’ 30-50 beetles from wasps at each site
during the month of July (3-10 hours).• Freeze them, then send them to me at end of
summer for identification
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Why Use Volunteers?• Lots of travel time • Short seasonal activity
(wasps actively hunt 4-6 weeks)• Short daily activity period (afternoon only)• Unpredictability of
weather (and wasps!)• Volunteers like this job!
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Who are the volunteers?
-city arborists-town Parks & Rec. staff-Girl Scout troops-amateur entomologists-high school science teacher-town councilors-families-interested individuals
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What motivates the volunteers?
-want to protect the trees-want to do something for my town-I can make real difference-I feel like I’m doing something important
-it’s fun-it’s rewarding, interesting-something I can do with my family, get outdoors-really elegant biology-it’s kind of cool
-my Dad made me
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Wasp colonies used for biosurveillance
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New England and New York
2009
242 colonies1000+ buprestids collected55 species, 11 genera
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What’s happening beyond New England?
Connecticut: 67 Delaware: 6Florida: 10Maine: 66Maryland: 17Massachusetts: 6Michigan: 6New Hampshire: 7New York: 12North Carolina: 17Rhode Island: 20Pennsylvania: 7Vermont: 19W. Virginia: 6Wisconsin: 19
Ontario: 23Quebec: 3New Brunswick actively lookingNova Scotia actively looking
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How Does Biosurveillance Compare with Purple Traps?
Caught 45 buprestids- 6 genera, 11 species
Caught 3 buprestids- 2 genera, 3 species
2008 2009
Caught 0 buprestids
Caught 378 buprestids- 7 genera, 21 species- 2 species, 1 genus new to Maine
(26 traps)(26 traps)
(2 sites, 2.5 hrs) (26 sites)
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Pros and Cons• Working with live insects can be fussy and
difficult• Working with volunteers is time-consuming
• By far the most sensitive and effective monitoring tool for EAB
• Also the best tool for monitoring other invasive buprestids (EDRR)
• Great public outreach• Get people involved in protecting their
community
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check our websites:
Maine– maine.gov/cerceris
Ontario– cerceris.info
Many resources available!Contact me: [email protected]
(207) 287-3096
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