Mosquito Control Measures for Aedes aegypti and Aedes albopictus · 2020-01-08 · House-to-House...
Transcript of Mosquito Control Measures for Aedes aegypti and Aedes albopictus · 2020-01-08 · House-to-House...
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Mosquito Control Measures for Aedes aegypti and Aedes
albopictus
Andrea Leal
Operations Director/Entomologist
Florida Keys Mosquito Control District
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Mosquito Vectors
Aedes albopictus Aedes aegypti
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Aedes albopictus Behavior
Primarily daytime biters
Feeds on humans as well as other mammals
and birds
Very aggressive
Short flight range
Eggs can overwinter
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Aedes aegypti Behavior
Primarily daytime biters In Key West:
Peak activity was recorded between 8:00am-10:00am & 4:00pm-6:00pm
“Stealth” biters Not very aggressive
Ankle-biters
Short flight range
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Common Larval HabitatsDomestic and Natural habitats
Anything that can hold a tablespoon of waterPlastic containers & bags
Plant trivets
Flower pots
Fountains
Garbage cans
Tires
Tree Holes
Rock Holes
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Surveillance for Aedes aegypti &Aedes albopictus
What we are used to…
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Surveillance for Aedes aegypti & Aedes albopictus
More precision…
BG Sentinel Trap
Ovicup
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Surveillance for Aedes aegypti
Larval surveillance
Labor intensive
House-to-house
House Index (% of homes positive)
Container Index (% of wet containers positive)
Easy way to explain to the public where the
problem areas are located…
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Advertisement in Local Paper
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Epidemic Curve vs. House Index
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Percent of Properties with A
e. aegypti larvae
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f Cas
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20102009Avg House Index 2009-2010
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Key West House Indices by Week: 2010-2013
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% L
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2010 Epidemic Curve vs. Weekly Catch Rate
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Ae.
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ypti
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ap/n
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2010Catch Rate 2010
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Key West Aedes aegypti Weekly Catch Rate: 2010-2013
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# A
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Control Methods: Larval Control
House-to-house Treating every container
Need access to all properties
Requires a lot of manpower
FKMCD dengue response:
20-26 employees/day
6 weeks to cover 3x5 area 3x’s
Public did not like weekly visits
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House-to-House Larval Control
Use residual products whenever possible
More time before return visit
Be thorough
One container can affect the area
Educate the homeowners
One-on-one chance to show homeowners how to
take care of their own property to avoid mosquito
production
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Larval Control: ULV applications
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Larval Control: ULV applications
Advantages:
Broad-area covered in small amount of time
Target-specific products available
Greater public acceptability
Disadvantages:
Cost
Timing: immediately before or after rain best
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Truck and Aerial Spraying
Little/no measurable results in traps
Difficult to reach due to behavior
Key West: Many open houses
Timing of spray is critical
Difficult to perform day-time spraying due to
public
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Handheld ULV Applications
Highly effective
Time consuming
Need a good number of:
People
Handheld units
Need access to all homes
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Thermal Fogging Smaller droplets
Stays elevated longer
Cloud allows for better efficacy See where it travels
Better coverage
Weather is a big factor Wind, temperature
Access to all homes?
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Barrier Treatments
Good potential for important areas
Ports
Shared outdoor spaces
What are the main areas of introduction??
Longer residual
Vegetation for harborage
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Domestic Mosquito ControlRelatively difficult
Varies by area Human habits
Mosquito habits
New methods on the horizon Genetically modified mosquitoes
Wolbachia infested mosquitoes
Auto-dissemination traps
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Adult Aedes aegypti & Aedes albopictus control
Know your population
Many instances of resistance
Test your population often
Know their behavior
Key West is different
Trial by error
Test new methods before deploying
operationally
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Acknowledgments
FKMCD Staff
Inspectors
Catherine Pruszynski
Larry Hribar
Michael Doyle
Valent BioSciences