2004 SURVEY
FOR MOSQUITOES IN SOUTH DAKOTA
HISTORY
OF RECENT SURVEYS IN SOUTH DAKOTA
This is
the 4th year of a project initiated by the South Dakota Department of Health
for the purpose of monitoring mosquitoes in South Dakota for the presence
of the West Nile Virus. A group from SDSU has been assisting the
Department of Health in collecting mosquitoes from the eastern side of
the State. The Department of Health is also trapping mosquitoes
from the Pierre area, and the city of Sioux Falls is also trapping from
their area. On the eastern part of the state, our adult survey has
focused on 3 different sites: 1) wooded acreage south of Brookings (1 mile
east of Big Sioux River), 2) next to a pond inside the State Fairgrounds
in Huron, 3) in a lightly wooded area along the Big Sioux
River near a pond, in the city of Watertown a pond. Two SDSU
undergraduate student, Ryan Beyer and Josh Seezs, are performing
most of the mosquito collections and identifications. To collect
mosquitoes, CDC miniture light traps (J.W. Hock Inc., Gainesville, FL)
are being used with carbon-dioxide baiting, beginning on June 1 and ending
on September 1, 2004. The light traps are equipped with an
internal programmable photo-switch such that the light and fan are turned
on at dusk and and off at dawn. The traps are checked each morning
and the mosquitoes are frozen in conventional freezers (approximately -20C).
During the same week, the mosquitoes are thawed briefly, identified and
then re-frozen at -70C. Frozen mosquitoes are sent to the S.D.
Department of Health on dry ice to be tested for the presence of the virus.
ADULT SURVEILLANCE DATA
Collection Sites (Satellite image provided by the USGS
EROS Data Center)
Current
data is reported with each of the linked sites listed below.
Brookings Site:
Mosquito trap is located in a small grove on a acreage approximately
1 mile from the Big Sioux River. The acreage is approximately 2 miles
south of the Brookings city limits and contains a few horses and cows.
Huron Site:
Trap is located in a bushy area of the South Dakota State Fairgrounds
in Huron, SD.
Watertown Site:
Trap is located in a lightly wooded area along the Big Sioux River
in the city of Watertown near a pond.
LARVAL
SURVEILLANCE DATA
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