Zebra Mussels Increasing in Northern Iowa Lakes
CREATED Nov. 15, 2013
SPIRIT LAKE, Iowa (AP) - Juvenile zebra mussels have shown up attached to boat hoists removed this fall from East Okoboji, West Okoboji and Lower Gar lakes in northern Iowa.
The Iowa Department of Natural Resources says the discovery comes after four juvenile zebra mussels were found in East Okoboji and Upper Gar Lake last fall.
Summer monitoring for zebra mussels resulted in little evidence of an expanding population but inspection efforts continue on hundreds of boat hoists.
It is required by law for boaters to remove all invasive species and to drain all water from boats and equipment before leaving a water body.
Zebra mussels can compete with other aquatic organisms for food. They kill native mussels. They also attach to water intakes and pipes of power plants and water supply facilities causing damage.
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