Sampling finds no Asian carp DNA in Michigan rivers

Bighead Carp
FILE - In this Thursday, Jan. 5, 2006 file photo, a bighead carp, front, a species of the Asian carp, swims in an exhibit that highlights plants and animals that eat or compete with Great Lakes native species, at Chicago's Shedd Aquarium. A new study based on computer modeling says if Asian carp successfully invade Lake Erie, they eventually could make up about one-third of the total fish weight there and cause declines of walleye and other valuable sport species. (AP Photo/M. Spencer Green, File)

LANSING, Mich. (AP) – Officials say no genetic material from invasive bighead or silver carp has been detected in Michigan waters this year.

The state Department of Natural Resources and the U.S. Fish and Wildlife Service are searching Michigan’s Great Lakes tributary rivers for Asian carp DNA.

After this year’s work is completed, more than 7,000 water samples will have been collected since 2013. One sample from the Kalamazoo River tested positive in 2014, but officials say the source probably was a boat or angler from another water body.

The DNR says it is waiting for results of a final round of sampling from the St. Joseph, Grand, Kalamazoo, Muskegon, Macatawa, Galien and Black rivers. But thus far, no samples this year have turned up signs of Asian carp.

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