evaluating efficacy of the bg lure attractant using three...
TRANSCRIPT
Evaluating Efficacy of the BG Lure Attractant Using Three Mosquito Trap Designs in the
City of Alexandria, Virginia
Mid-Atlantic Mosquito Control Association February 28, 2008
Holly Feltner and Patricia FerraoAlexandria Health Department
Vector Borne Illness Prevention Program
City of Alexandria
Location in Proximity to the Washington DC Metropolitan Area and Mid-Atlantic States
OBJECTIVE
To compare efficacy of the BG Lure in attracting adult Aedes albopictus (Asian Tiger mosquitoes) using three different routine surveillance trap types.
BG Sentinel Trap
CDC Light Trap
Fay-Prince Trap
Human Skin Odor in a Pouch
BG Lure mimics the scent of human skin and releases a mixture of several compounds for up to five months.
Lactic Acid
Fatty Acids
Ammonia
Developed by BioGents GmbH (Germany)
Attractant:
BG-Lure
CO2 (dry ice)
Collapsible
12V battery
BG-Sentinel Trap (BG)
Fay-Prince Trap (FP)
Developed by the U.S. Centers for Disease Control, Technical Development Laboratory
Attractant: BG-Lure
CO2 (dry ice)
6V battery
CDC Light Trap
Developed by the U.S. Centers for Disease Control
Attractant:
BG-Lure
CO2 (dry ice)
Light
6V battery
Study Site
Alexandria, VA
Cameron Knolls Community
Trap Locations
Trap Locations
Day 1 Day 2 Day 3
Location 1 BG FP CDC
Location 2 CDC BG FP
Location 3 FP CDC BG
Clockwise rotation
24 hr run time
Each trap, at each location, once per week
Trap Rotation
Results: Top Three Mosquito Species
CDC
74%
22%
Fay-Prince
91%
6%
BG
14%
83%
Ae. Albopictus
Cx. Restuans/pipiens
An. punctipennis
Aedes albopictus
0
10
20
30
40
50
60
70
80
90
100
23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41
Epi Week
Avera
ge #
mo
squ
ito
es
/ t
rap
nig
ht
BG
FP
CDC
Results: Average Aedes albopictus in the BG – FP – CDC
0
2
4
6
8
10
12
14
16
18
Avera
ge #
mo
squ
ito
es/
tra
p n
igh
t
BG FP CDC
Trap Type
BG
FP
CDC
Results: Total Aedes albopictusper trap BG – FP – CDC
Results: Total number of Aedes albopictus collected per location
0
100
200
300
400
500
600
700
800
900
To
tal
# m
osq
uit
oes
/ 4
5 t
rap
nig
hts
Location 1 Location 2 Location 3
BG
FP
CDC
Aedes albopictus collected in the BG sentinel traps in Urban vs. Semi-urban environments in
Northern Virginia, 2007
0
20
40
60
80
100
120
140
160
23 26 29 32 35 38 41
Epi Week
Mo
squ
ito
es
/ t
rap
nig
ht
ALEXANDRIA
FAIRFAX
Number of Ae. albopictus trapped in Alexandria vs. Fairfax
2007 season
0
500
1000
1500
2000
2500
3000
BG CDC FP
Trap Type
# m
osq
uit
oes/
45 t
rap
nig
hts
Alex Ae.
albopictus
FFX Ae.
albopictus
Number of An. Punctipennis and Culex sp.
trapped in Alexandria vs. Fairfax, 2007
0
10
20
30
40
50
60
70
80
90
BG CDC FP
Alex An.
punctipennis
FFX An.
punctipennis
0
50
100
150
200
250
300
350
400
450
500
BG CDC FP
Alex Culex sp.
FFX Culex sp.
Number of Mosquitoes based on 45 trap nights
Conclusions
BG trap is statistically significant* in catching a higher average number of Aedes albopictus
BG trap design may provide better dispersal of lure compounds than the FP or CDC traps
Overall, the BG trap worked superior at the chosen location
*(P<.05)
Acknowledgements
Seasonal Staff
Diana Brown
Frances Ellison
Ben Cocchiaro
Lindsey Booher
Fairfax County Health Department
Jorge Arias
Hina Bhalala
Carl Sivertsen
Holly Feltner
Alexandria Health Department
4480 King Street
Alexandria, VA 22302
703-838-4400 Ext. 326