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Fish and Wildlife in Search of Extinct Blue Pike

Any angler who has one in possession, dead or alive, could solve the mystery by contacting the Fish and Wildlife Service at (716) 691-5496.

If you happen to have a taxidermy mount of a blue pike in your attic, please dig it up and give the U.S. Fish and Wildlife Service a call. Its scientists would like to take some DNA samples in an effort to save an extinct species.

Blue pike is a sub-species of the walleye., it was pursued intensely by commercial and sport fishers, who together landed a billion pounds of the fish between 1885 and 1962. At times, the blue pike made up more than 50 percent of the commercial catch in Lake Erie and Lake Ontario.

The population crashed in 1958, but the species lingered on until it was officially declared extinct in 1975.

In 1996, the Fish and Wildlife Service's Great Lakes Fishery Resources Office in Buffalo suggested the blue pike's obituary may have been written prematurely.

Canadian anglers had sent federal researchers two specimens, which, superficially at least, resembled blue pike. One was a whole fish that had been kept in a freezer for 25 years. It was said to have been caught in the province of Ontario. The other was the head and skeleton of a fish caught in a Quebec lake nine years ago.

Federal scientists took DNA samples from both specimens, hoping the genetic material could be identified as that of a blue pike. Such a discovery would justify a renewed search for the species in Canadian lakes where it was not previously known to exist.

According to an Associated press report , Betsy Trometer, a fishery biologist with the Great Lakes unit, said all of the DNA scrapings from the frozen fish "either exactly matched walleye DNA or were so close to it that we can't conclusively say there's a difference."

For more information on The Endangered Species Act or other articles about Blue Pike and DNA

faux blue pike Why are Blue Pike extinct?

The failure to identify blue pike DNA that could be traced to a Canadian lake doesn't necessarily mean the species is gone for good. Rather, it means more genetic evidence is needed to resolve the case one way or the other.

"At this point, we're focusing our attention on getting historic samples of blue pike DNA," Trometer said and such samples are in short supply.

The Fish and Wildlife Service has a few bits of mucus from scales that biologists scraped from Lake Erie blue pike from the 1920s to the 1950s. However, Trometer said those samples are probably of limited value because they were stored in paper envelopes for decades and are therefore apt to be contaminated. The feds also obtained some DNA from a 1950s-vintage taxidermy mount of a blue pike.

They want to compare the DNA from the known blue pike specimens to that of modern-day walleyes. Then they'll be better able to identify any suspect fish turned in by anglers in the future.

Because the two species bare a strong resemblance to one another, even the most experienced eye could not always make a positive visual identification.

Blue pike were named for their distinct blue-gray cast, but walleyes in some waters also have a slight bluish tint.

Biologists used to tell the two apart by measuring their eyes. Blue pike had bigger eyes in proportion to their skulls, and their orbs were set farther apart than those of walleyes.

Does the blue pike persist in some remote, overlooked fishing hole?

Any angler who has one in possession, dead or alive, could solve the mystery by contacting the Fish and Wildlife Service at (716) 691-5496.

go to last week's news Great Lakes Sport Fishing Council turns 25

 Federal hatchery in Iron River Wisconsin won't be accepted by the Minnesota DNR

A scheduled shipment of 180,000 lake trout from the Federal hatchery in Iron River Wisconsin won't be accepted by the Minnesota DNR because of a trout bacterial disease.

The Minnesota DNR was to have received 180,000 Isle Royal lake trout from the Iron River National Fish Hatchery for stocking in Lake Superior this spring. But the U.S. Fish and Wildlife Service confirmed last month that lake trout at the hatchery had enteric redmouth, a disease that can affect trout and salmon but poses no health risk to humans.

lake trout
Enteric redmouth disease (ERM) is a systemic bacterial infection of fishes, but is known principally for its occurrence in rainbow trout. It was first reported in the 1950's in Idaho rainbow trout.

The disease can spread from fish to fish by direct contact with infected fish or carriers. Vertical transmission has not been demonstrated and probably does not occur. Stressors have been shown to play a significant role in triggering ERM outbreaks.

The Minnesota DNR plans to stock Lake Superior with 180,000 lake trout from it's own hatchery.

go to last week's news ANS Task Force Forms Fishing & Boating Committee -GLSFC, BASS and Trout Unlimited to represent fishing.

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