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Yellowstone National Park makes headway in war on lake trout


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Using mostly outside grants, the parks spends more than $2 million a year on the effort.

Yellowstone will begin targeting laker spawning beds this September, Gresswell said. Aided by 270 lake trout implanted with transmitters that send location information, biologists will attempt to kill eggs at two locations using two experimental methods: electrocution and suction.

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Fisheries biologists hope that spawning bed treatments could hold Yellowstone Lake’s lake trout population at a low level at less cost in the long run. Entirely removing mackinaw from the 139-square-mile body of water is believed to be impossible.

Treatment of spawning beds all around the lake could come within the next several years, Gresswell said.

"The advisory panel that I’ve been head of is suggesting to the Park Service that they have something ready by 2016," he said, "because we expect that the decline of lake trout will be fairly substantial by then."

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Information from: Jackson Hole (Wyo.) News And Guide, http://www.jhnewsandguide.com




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