seasonal activity of mosquito species in fairfax...
TRANSCRIPT
Seasonal Activity of Mosquito Species in Fairfax County,
Virginia
John OrrFairfax County Health Department
Introduction
• Different mosquito species have different seasons of activity
• Ability to anticipate periods/levels of activity
– Plan response
– Recognize unusual patterns
Methods
• Mosquito trapping data from 2012-2014
– Gravid traps (4,975 trapnights)
– CDC light traps (4,442 trapnights)
– BG Sentinel traps (487 trapnights)
• Epiweeks 21-42
• “Percent of Annual Catch” = (Mosquitoes per week X 100) / Mosquitoes per year
0
5
10
15
20
25
30
35
21 23 25 27 29 31 33 35 37 39 41
Pe
rce
nt
of
An
nu
al C
atch
Epiweek
2012-2014 Ochlerotatus canadensis Captures
CDC Light Trap
May June July Aug Sep Oct
0
10
20
30
40
50
60
70
80
21 23 25 27 29 31 33 35 37 39 41
Nu
mb
er
of
Mo
squ
ito
es
Cap
ture
d
Epiweek
2012-2014 Ochlerotatus canadensis CDC Light Trap Captures
2014
2013
2012
May June July Aug Sep Oct
0
2
4
6
8
10
12
21 23 25 27 29 31 33 35 37 39 41
Pe
rce
nt
of
An
nu
al C
atch
Epiweek
2012-2014 Aedes albopictus Captures
BG Trap
CDC Light Trap
May June July Aug Sep Oct
0
2
4
6
8
10
12
21 23 25 27 29 31 33 35 37 39 41
Pe
rce
nt
of
An
nu
al C
atch
Epiweek
2012-2014 Ochlerotatus japonicus Captures
CDC Light Trap
Gravid Trap
May June July Aug Sep Oct
0
2
4
6
8
10
12
14
16
21 23 25 27 29 31 33 35 37 39 41
Pe
rce
nt
of
An
nu
al C
atch
Epiweek
2012-2014 Culex erraticus Captures
CDC Light Trap
May June July Aug Sep Oct
0
2
4
6
8
10
12
21 23 25 27 29 31 33 35 37 39 41
Pe
rce
nt
of
An
nu
al C
atch
Epiweek
2012-2014 Culex spp. Captures
CDC Light Trap
Gravid Trap
May June July Aug Sep Oct
0
1000
2000
3000
4000
5000
6000
7000
8000
9000
18 20 22 24 26 28 30 32 34 36 38 40 42 44
Nu
mb
er
of
Mo
squ
ito
es
Cap
ture
d
Epiweek
2012-2014 Culex spp. Gravid Trap Captures
2014
2013
2012
May June July Aug Sep Oct
0
2
4
6
8
10
12
14
16
18
21 23 25 27 29 31 33 35 37 39 41
Pe
rce
nt
of
An
nu
al C
atch
Epiweek
2012-2014 Aedes vexans Captures
CDC Light Trap
May June July Aug Sep Oct
0
200
400
600
800
1000
1200
1400
1600
21 23 25 27 29 31 33 35 37 39 41
Nu
mb
er
of
Mo
squ
ito
es
Cap
ture
d
Epiweek
2012-2014 Aedes vexans CDC Light Trap Captures
2014
2013
2012
May June July Aug Sep Oct
0
50
100
150
200
250
Mar Apr May Jun Jul Aug Sep Oct
Pre
cip
itat
ion
(m
m)
Month
2013 Precipitation Compared to 30-Year Mean (1980-2010)
2013
30-Year Mean
Conclusions
• Weather plays a role
• Collection should be consistent
• Important to collect data
– Make control decisions
– Better planning of season
– Better leverage/allocation of resources
Acknowledgments
• Disease Carrying Insects Program– Dr. Jorge Arias
– Josh Smith
– Andy Lima
– Patrick Brown
– Ada Garcia
• 2012-2014 DCIP Field CrewPedro Arias, Evan Bray, Aaron Henecke, Aaron Hill, Aaron Hoxworth, Zara Khan, Alicia Majeau, Natalie Mendez, Ebonie Miller, Sofiane Mouloa, Andrew Nelson,Amy O’Donnell, Valerie Pansy, Pablo Quiñónez, Anastasia Samsonova, Rachel Severson, Cory Shannon, Cynthia Sossi, Awuse Tama, Fernando Valdez and Emily Wrona
Thank You