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Captain B.R.K

Zebra's Are Present

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Captain B.R.K

Just heard from my boss who caught it over the radio this afternoon. Thought this possibly couldn't have happened. Now Star Tribune has this article from on-line.

Though reports haven't found many (2), that doesn't mean they aren't out there.


"It's troubling. It's disappointing. And it was probably inevitable. That's how state officials described the discovery of zebra mussels in Lake Mille Lacs - one of Minnesota's largest, most popular and most heavily fished lakes.

The Department of Natural Resources announced Friday that it had found two zebra mussels in separate locations during a routine underwater survey of the 132,000-acre lake about 75 miles north of the Twin Cities.

But it's uncertain what impact the exotic species could have on Mille Lacs and its renowned walleye fishery.

"This is certainly not welcome news," said Gary Montz of the DNR. But, he said, "I wouldn't even begin to predict the impacts. It's just too early. We're not even certain there's a reproducing population, although [the discovery] would seem to suggest that."

Zebra mussels can foul beaches, clog water intakes, harm native mussels and interfere in lake food chains. In great numbers, they can change water clarity, which can affect plants and fish.

Officials plan to continue searching the lake to determine whether the zebra mussels are widespread. But a check of more than 20 sites by scuba divers turned up just the two adult zebra mussels.

Mille Lacs resort owner Terry McQuoid, told of the findings Friday, shrugged off the news.

"It's not a big deal," he said. "Other lakes have them. It's maybe not ideal, but it was just a matter of time that they would come here. Hopefully, they might not hurt us."

Montz said it likely would take some time before zebra mussels -- if they are reproducing -- would affect the lake. And the effects could range from minimal to severe.

"We definitely don't think this is the end of the world," he said. But he called the discovery "troubling."

One thing is certain: It underscores the continuing spread of exotic species in state waters. And the heavy use of Mille Lacs increases the likelihood that boaters could inadvertently spread zebra mussels to other lakes via live wells, bait buckets, boats or trailers.

"It certainly points out the problem we're facing with invasive species, whether it's zebra mussels, Asian carp, round gobies, curly-leaf pondweed or Eurasian water milfoil," said Ron Payer, DNR fisheries chief.

"So many people from all over the Upper Midwest fish Mille Lacs; it could be a source of zebra mussels going to other lakes."

And there's no getting rid of zebra mussels once they are in a lake or river.

"There's not a lot you can do once they are in a system," Payer said.

Officials speculate that the zebra mussels in Mille Lacs arrived on or in a boat that had picked up the mussels elsewhere. "They probably hitched a ride," said Montz, the DNR's coordinator for zebra mussel study.

In the larvae stage, the mussels are microscopic and can be accidently transported with water in live wells or bait buckets. The adult mussels can attach themselves to boats, trailers and aquatic vegetation.

Mille Lacs is the state's third inland lake known to be have zebra mussels, natives of the Caspian Sea near Russia that spread to the Great Lakes in the ballasts of oceangoing ships. They have been found in Lake Superior, the Mississippi River, Lake Zumbro near Rochester and Lake Ossawinnamakee near Brainerd.

The best-case scenario is that the zebra mussels don't yet have a good foothold in Mille Lacs and that if they do reproduce there they may not thrive in large numbers. The worst-case scenario? Montz refers to Lake St. Claire, between lakes Huron and Erie, where zebra mussels were first detected in 1988. They reproduced in huge numbers.

The lake, once a prime walleye fishery, changed dramatically.

"Zebra mussels filter water; they cleared up the lake enough that aquatic vegetation got established in a lot of areas," Montz said. "That provided cover for bass and northern, and those populations grew. The fishery changed from an abundant walleye fishery to a bass and northern fishery."

What about Mille Lacs?

"I wouldn't speculate that Mille Lacs would lend itself readily to a major change, but we just don't know," Payer "

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Jeff S

frown.gif It's a sad sad day frown.gif

We all need to step up to the plate and make sure our boats are clean before heading to another lake. The future of our lakes depend on us!

Anyone have any info on the other Minnesota lakes that have zebre mussles in them? Have the colonies expanded?

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Captain B.R.K

When I lived up in Duluth, one night the news did a segment on zebra mussels in the St.Louis River. WOW was I amazed at the number of em' once they get established. Their were scuba divers moving around what I thought were rock.......only to see them moving around massive clumps of zebra mussels!

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  • Your Responses - Share & Have Fun :)

    • Rick
      The Minnesota Department of Natural Resources has confirmed zebra mussels in McCarron Lake in Ramsey County.  A person trained in invasive species detection found six zebra mussels near the public access. A DNR survey found six additional zebra mussels north and south of the public access. In both cases, the zebra mussels were attached to rocks and muskgrass in 1 to 3 feet of water. Ramsey County staff conducted a targeted search and confirmed a lakewide zebra mussel presence. Whether or not any invasive species has been confirmed in a lake or river, Minnesota law requires boaters and anglers to: Clean watercraft and trailers of aquatic plants and prohibited invasive species. Drain all water by removing drain plugs and keeping them out during transport. Dispose of unwanted bait in the trash. Some invasive species are small and difficult to see at the access. To remove or kill them, take one or more of the following precautions before moving to another waterbody: Spray with high-pressure water. Rinse with very hot water (120 degrees for at least two minutes or 140 degrees for at least 10 seconds). Dry for at least five days. People should contact an area DNR aquatic invasive species specialist if they think they have found an invasive species in a waterbody where it has not already been confirmed. More information is available at mndnr.gov/ais. Discuss below - to view set the hook here.
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