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Field study in Cesena/Italy 2008Claudio Venturelli, Dipartimento Sanità pubblica, Ausl Cesena, Italy
Christian Engelbrecht, University Regensburg GermanyMartin Geier, Biogents AG, Regensburg Germany
Control of Asian Tiger Mosquitoes by the use of Biogents Mosquito Traps
Location: Cesena/Italy, city with 100.000 peopleTime: June to October 2008
Study design:
Selection of 6 areas in Cesena where Asian Tiger mosquitoes (Aedes albopictus) occur. (Based on ovitrap measurements of the last years)
3 areas are randomly allocated to receive the treatment with traps, the other 3 areas are control areas where no traps are placed.
The treatment sector receives 8 traps, placed outdoor, run constantly for 24h, from June to October.
The control sector has no traps.
Following parameters are measured in all sectors:- Human landing rates (same person, 1h in the afternoon, every 5-7 days)- 2 Ovitraps are placed in a sector, weekly collections
Intervention and control areas
Six areas with simlar environmental conditions have been selected
- Three intervention areas with placement of traps: red dots
- Three control areas without placement of traps: blue dots
Area 1: Treatment with traps
25 m
40m x 45m = 1800sqm
M
Biogents traps
Ovitraps (for monitoring deposited eggs)
Position, where human landing rates are measured
Area 2: Treatment with traps
60m x 50m = 3000 sqm
20 m
M
Biogents traps
Ovitraps (for monitoring deposited eggs)
Position, where human landing rates are measured
Area 3: Treatment with traps
113m x 55m = 6215 sqm
20 m
M
M
Biogents traps
Ovitraps (for monitoring deposited eggs)
Position, where human landing rates are measured
Area 4: Control
30 m
M
Ovitraps (for monitoring deposited eggs)
Position, where human landing rates are measured
Area 5: Control
30 m
M
Ovitraps (for monitoring deposited eggs)
Position, where human landing rates are measured
Area 6: Control
30 m
M
Ovitraps (for monitoring deposited eggs)
Position, where human landing rates are measured
0
5
10
15
20
25
30
35
40
45
20 25 30 35 40 45
May June July August September October
Mea
n h
um
an la
nd
ing
s p
er h
ou
r
With traps
No traps
Summary of all three areas: Reduction of human landing rates
Summary of all three areas: Reduction of egg production
0
200
400
600
800
1000
1200
28 33 38 43
Week
Nu
mb
er o
f eg
gs
in o
vitr
aps
With traps
No traps
4950
759
Areas without traps
67,41612Total number of colleceted eggs in ovitraps
89,381Total human landing counts
Reduction in %Areas with traps
From 1 August to 30 September
Summary