DNR Q & A: Does the DNR do anything to control mosquitoes?

Minnesota Department of Natural Resources field staff, resource managers and the DNR Information Center staff answer many questions every day about natural resources topics. Here is one of them:

Q.  Does the DNR do anything to control mosquitoes?

A.  The DNR does not generally do any control of mosquitoes. Mosquitoes are a nuisance to people — but they are food for a variety of animals such as fish, birds, bats and dragonflies. All mosquito control products have some level of nontarget impact to the environment, and most treatments provide only a temporary reduction in adult mosquito numbers.

We do allow very limited mosquito control at Fort Snelling State Park when levels meet certain thresholds identified in an agreement between the DNR and Metropolitan Mosquito Control District (MMCD). We also have an interagency agreement between the MN Dept. of Health, MMCD and DNR for management of disease-carrying mosquitoes.

Control treatments under both agreements occur only in localized areas within the park and only when sampling detects mosquito larva numbers above threshold levels. In many years, no treatments are conducted.

— Gary Montz, aquatic research biologist
— Ed Quinn, natural resource program consultant, Parks and Trails Division

For more information, call the DNR information line at 296-6157 or go to the DNR Web site at www.dnr.state.mn.us.


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