Environmental Health - Cerro Gordo County Department of Public Health

Environmental Health

The Cerro Gordo County Department of Public Health collects mosquitoes at various locations in the county, then sends them to Iowa State University where they are sorted and counted according to species. Iowa State University supplies a weekly report that indicates how many mosquitoes, and what types, are found in Cerro Gordo County.

To view the reports, you must have Adobe Acrobat.
If you do not have Acrobat, you can download it for free on the Adobe Acrobat web site.

2007
Weekly mosquito counts

2006
June 9, 2006
June 23, 2006
June 30, 2006
July 7, 2006

2005
June 3, 2005
June 10, 2005
June 17, 2005
June 24, 2005

July 1, 2005
July 8, 2005
July 15, 2005
July 22, 2005
July 29, 2005

Aug. 12, 2005
Aug. 19, 2005
Aug. 26, 2005

Sept. 2, 2005
Sept. 9, 2005
Sept. 16, 2005
Sept. 23, 2005
Sept. 30, 2005

Below is a description of the mosquitoes that are collected and counted:

Culex mosquitoes primarily feed on birds. They lay egg rafts of 100-250 eggs in anything that collects and holds water. Their populations build throughout the summer and generally peak in August and September. Culex mosquitoes amplify West Nile Virus throughout the summer months.

Aedes and Ochlerotatus primarily feed on mammals but will feed on birds. They lay eggs in dry areas which are later flooded when it rains. They are often called "flood water mosquitoes". Their populations peek one to two weeks after significant rainfall.