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Invasive Asian Carp Found Spawning In Great Lakes Tributary

Scientists say there's proof that one type of invasive Asian carp is spawning in a Great Lakes tributary.

A graduate student at the University of Toledo in Ohio discovered grass carp eggs last summer in the Sandusky River, which flows into Lake Erie.

Holly Embke's findings have been published in the Journal of Great Lakes Research.

The U.S. Geological Survey previously reported that four young grass carp taken from the river had resulted from natural reproduction.

Grass carp are not as big an environmental threat as Asian bighead and silver carp, which could reach Lake Michigan through Chicago-area waterways.

Grass carp can harm fish and waterfowl habitat by gobbling up aquatic plants. But unlike bighead and silver carp, they don't compete with native fish or threaten to disrupt food chains.

Indiana is trying to find ways to control its growing Asian carp population. Last month, Fort Wayne unveiled a berm designed to prevent Asian carp from jumping out of the Wabash River Basin into the Great Lakes River Basin.

The invasive Asian carp have also been found near Lake Monroe in Salt Creek.

Researchers recently discovered electric barriers designed to prevent invasive Asian carp from reaching the Great Lakes are not effective.

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