Underwater guns set toward invaders

LANSING -- A new federal and state partnership seeks to bolster the Grand Traverse Bay's native fish populations. Officials will use traps and seismic guns to clear rusty crayfish and round gobies from spawning reefs, where they hang out and eat fish eggs.

"We are trying to give the native species a helping hand," said Lindsay Chadderton, the Great Lakes aquatic species director for the Nature Conservancy. Chadderton is based at the biology department at the University of Notre Dame.  more...

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