ahhh, nature.
Problem is, the alewife population and other feeder fish are way down in the Great Lakes, already having a negative impact on sport fishing, particularly chinook salmon and other salmon species.
If Asian Carp get into the Great Lakes and proliferate as they have everywhere else, Buh-Bye to the millions of dollars sport fishing industry.
TRAVERSE CITY, Mich. -- Asian carp could find enough food and breeding areas to reach all five of the Great Lakes within 20 years if allowed to gain a foothold, according to a scientific report.
The risk analysis by U.S. and Canadian researchers said just 10 mature females and even fewer males could establish a population in the lakes, assuming they find rivers suitable for spawning. Previously, some officials have said hundreds of the carp probably would be needed to launch a successful invasion.
Their likeliest pathway to the lakes is a network of canals and rivers in the Chicago area, where their DNA has been detected just
six miles from Lake Michigan, the report said. If they evade an electric barrier and reach the lake, they could proliferate in bays and tributary rivers, eventually moving north to Lake Huron and then south into warm, shallow Lake Erie, which has the region's most abundant fish population and would be ideal carp habitat.
It would take longer for them to infest lakes Superior and Ontario. But they could survive in both, the report said, contrary to some experts who contend Superior would be too cold.
The analysis, released by Canada's Fisheries and Oceans ministry after a 16-month study, is "sobering," said Michael Hansen, chairman of the Great Lakes Fishery Commission. "It concludes that arrival of Asian carps is looming, and should the fish become established in the Great Lakes, that their effects on the ecosystem would be severe."
Bighead and silver carp have migrated northward on the Mississippi River and its tributaries since escaping from Southern sewage lagoons and fish farms, where they were imported in the 1970s. Researchers are studying their impact on native fish.
The U.S.-Canadian report says the carp, which gorge on tiny plants and animals called plankton, would reduce the food supply for small Great Lakes fish, causing them -- and eventually bigger fish that feed on them -- to decline. The carp also could gobble larvae of prized sport fish such as walleye and yellow perch, it said.
"The questions everyone has been asking are: 'Can a breeding population survive in the Great Lakes and would it be a significant problem if they did? ' " said Marcia McNutt, director of theU.S. Geological Survey. "Now we know the answers and unfortunately they are 'yes and yes.' "
A study released Thursday by Fisheries and Oceans Canada paints a very grim picture of the threat posed to the Great Lakes by invasive Asian carp, and states that the likelihood of the fish entering the Great Lakes is "very high."
The study, titled "Binational Ecological Risk Assessment of Bigheaded Carps for the Great Lakes Basin" concluded that the presence of as few as 10 females and 10 or fewer male Asian carp would be enough to allow the fish to reproduce in any of the Great Lakes.
Safe to say the turtle
sloooooooooooowwww congress won't act fast enough to stop the carp from getting into Lake Michigan. Or-- even worse, they'll wait until "proof" the fish is already in Lake Michigan,
then maybe do something.
weak, very weak.
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