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Underwater cannon can protect valuable fish in the Great Lakes

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Michigan: Scientists Will Chase Invading Fish With Cannon
Source: The New York Times; National Briefing-Midwest – By THE ASSOCIATED PRESS. Published: December 30, 2011

Scientists are trying to discern whether an underwater cannon can protect valuable fish in the Great Lakes from the round goby, a predator that lurks near spawning beds and gobbles up the eggs of lake trout and whitefish. Biologists plan to use a seismic gun next fall to chase the predatory fish from several Lake Michigan reefs. Researchers hope the gobies will stay away long enough for native fish to hatch and escape. The experiment is part of the increasingly sophisticated war against invasive animals and plants that costs the nation’s economy billions of dollars each year.

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http://www.nytimes.com/2011/12/31/us/michigan-scientists-will-chase-invading-fish-with-cannon.html?_r=2

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