Weekly mosquito trap counts Dane County 2017

Trap sites were chosen for specific research purposes and are not necessarily intended to monitor for mosquito activity for the entire Madison metropolitan area. Site headings are changed in the table whenever we relocate a trap.  The mosquito traps are run one night per week. This site is intended to provide the public with our limited data concerning the general mosquito population numbers in the area and the infection rates with West Nile virus.

We will try to have the mosquito counts updated within 5 days of collecting the traps.

Mosquito populations can differ drastically by locality based on a number of ecological and environmental conditions. Trap catches will be influenced by wind speed, temperature, humidity and precipitation.

Figure 1.  Graph showing average number of mosquitoes/trap for 2012-2017. This may provide a rough idea of how active mosquitoes are during any given week in Dane County.

Table 1.  Summary of number of mosquitoes trapped at each light/carbon dioxide trap location in Dane County.

Date Carver St
Warner Pk
Strickers Pond
Carpenter Ridgeway
Arbor Drive
Paso Roble
Sandburg Woods
Ave/trap
6/6/2017  64 675 12  1,050  23 17    307
6/13/2017 109 339 31 736 15 18   208
6/20/2017 89 240 10 658 22 39   176
6/27/2017 95 193 6 8,118* 5 81   1,416
7/6/2017 1,648 922 278 2,056 NA 169   1,014
7/11/2017 3,372* 864 160 16,797*  720 441   3,724
7/18/2017 2,064 786 NA 2,062  435 280   1,125
7/25/2017 1551  399 68 2769 298 183    878
8/1/2017 2066* 1943* 61 11488* 397 409   2727
8/8/2017 305 2  30 0 644 650 768 366
8/16/2017 1525 661 148 2884 147 208 870 920
8/22/2017 969 437 44 568 21 155  515 313
8/29/2017     335    266      54     465    74    78      221    182
 9/6/2017     165     49      6     5    0    15      3     35
9/12/2017     237    160      11       281    44    46      72     122

*Estimated total.

 

Table 2.Summary of number of Culex pipiens/restuans trapped at each light/carbon dioxide trap location in Dane County.  These mosquitoes are the West Nile Virus vectors.

Date

Carver St

Warner PK Strickers Pond Carpenter Ridgeway Arbor Drive Paso Roble Total

Positive Pools

6/6/2017  0  1  0  0  0  7  8  0
6/13/2017  0  5  0  0  1  12 18  0
6/20/2017  2  6  0  7  1  7 23  0
6/27/2017  1  4  0 12  2  0 19  0
7/6/2017  0  34  6  1  NA  1  42  0
7/11/2017  1  20  16  42  0  30  109  0
7/18/2017  0  24  NA   9  2  45  80  0
7/25/2017  7  27 7 24 5 16 86 1
8/1/2017  23 49 16 84 10 42  224 1
8/8/2017  3 0 17 0 2 90  114 0
8/15/2017  10 10 14 2 1 29  72 0
8/22/2017  6 35 15 11 1 10  78 0
8/29/2017  9 17 1 2 1  21  51 0
9/6/2017  0 3 0 0 0  0  3 0
9/12/2017  0 2 1 1 1  2  7 0

**Pool positive for WNV by RAMP testing