Great Lakes fish

Environment & Science
10:32 am
Tue April 15, 2014

Whitefish shortage causing Passover meal problems

Whitefish filets.
Credit user Cheryl Q / Flickr

TRAVERSE CITY – Many fish markets in the Great Lakes region are running short of whitefish, and it's coming at a bad time: the Passover holiday.

Whitefish is a key ingredient in gefilte fish, a traditional Jewish dish that originates in eastern Europe. Recipes vary, but it often consists of ground fish, vegetables such as onion and carrots, and bread crumbs formed into loaves or balls.

The shortfall results partly from the bitterly cold winter that caused vast sections of the Great Lakes to freeze over. The ice cover kept some commercial fishing crews stuck in port. A drop in the whitefish population is also to blame.

Kevin Dean of Superior Fish Co. near Detroit says his latest shipment amounted to just 75 pounds, although he requested 500 pounds.

The Environment Report
12:40 pm
Thu April 3, 2014

The extensive ice cover could delay fish migrations in the Great Lakes

Male and female steelhead trout.
NOAA

 

The prolonged winter and the ice cover on the Great Lakes could lead to some lasting effects on wildlife.

For one thing, scientists expect that a lot of the fish that people like to catch will be showing up late to the places they usually spawn.

Solomon David is a research scientist at Shedd Aquarium in Chicago.

David basically chases fish around for a living.

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Environment & Science
3:32 pm
Sat March 1, 2014

Ohio explores return of sturgeon to Lake Erie

Lake Sturgeon
Credit MI DNR website

PORT CLINTON, Ohio (AP) - Ohio's wildlife agency is looking at bringing a prehistoric fish back to Lake Erie. The Ohio Department of Natural Resources is looking into whether it can reintroduce breeding populations of sturgeon to the lake. 

Sturgeon were once plentiful but thought to be all but gone from Lake Erie less than two decades ago.

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Law
12:01 pm
Mon January 20, 2014

Canadian trucking company slammed with $75,000 Asian carp fine

Asian carp
Credit DNR

A Canadian court has slammed a trucking company and one of its drivers with a combined $75,000 fine for trying to haul live Asian carp across the U.S.-Canadian border.

Driver Yong-Sheng Zhang is with the Edmonton, Alberta-based Alltheway Trucking Inc.

Twice in early 2012, Zhang crossed the Ambassador Bridge connecting Detroit and Windsor, Ontario, with a truckload of fish from Arkansas. The fish were packed in ice, and included two species of Asian carp.

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The Environment Report
9:00 am
Thu December 12, 2013

Go lake trout! Native fish overcome seemingly ‘insurmountable’ challenges in Lake Huron

Ellen Marsden examines an egg trap on what is left of the historic spawning reef in Thunder Bay. This reef was buried in cement kiln dust which filled in the spaces between the stones where fish would otherwise deposit their eggs.
NOAA

A fish that was almost wiped out in the Great Lakes is making a comeback in Lake Huron.

Lake trout are suddenly doing what biologists have been trying to get them to do for more than 40 years: They’re making babies.

Lake trout used to be a mainstay of Great Lakes commercial fishing in the first half of the twentieth century. The Lakes would produce 15 million pounds of the fish every year.

Then the sea lamprey came in and sucked the life out of the lake trout populations.

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Stateside
4:38 pm
Wed December 4, 2013

Lake Superior is heating up faster than any other lake on Earth

Lake Superior
Flickr user Arthur Chapman Flickr

Lake Superior is warming up.

Scientists say the largest of the Great Lakes is heating up faster than any other lake on Earth.

What's behind the warming? And could this be good news for those who enjoy Great Lakes fishing?

Tim Cline is a PhD student at the University of Washington's School of Aquatic and Fishery Sciences. He has studied the effect of temperature on fish in Lake Superior, and he joined us today to discuss the issue.

Listen to the full interview above.

Environment & Science
12:48 pm
Tue November 5, 2013

'Lake Erie has 2% of the water in the Great Lakes, but 50% of the fish'

The 2011 algae bloom on Lake Erie. Significant blooms returned to Lake Erie around 2000-01. Researchers are looking into how these blooms affect fish.

The stat comes from Jeff Reutter, Director of Ohio State University's Stone Laboratory. He says the converse is true for Lake Superior. It holds 50% of the water, but just 2% of the fish.

It's a rough estimate, he says, but it gives you a good understanding of how each of the five Great Lakes have unique characteristics, which present unique challenges in managing these lakes.

As part of our series on how climate change is affecting the Great Lakes, Reutter spoke to us about how Lake Erie is especially vulnerable to temperature variations. It is the southernmost, and the shallowest of the five Great Lakes.

He also spoke about how, unlike the other four Great Lakes, Lake Erie is surrounded by agriculture and a more urbanized landscape.

You can listen to him speak about his "50 and 2 Rule" here:

Lake Erie has seen a resurgence in algal blooms over the last ten years. It was once a big problem in the 60s and 70s, and it has returned as a problem again.

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The Environment Report
6:00 am
Tue October 1, 2013

Great Lakes fish on a diet

University of Wisconsin-Milwaukee Professor John Janssen
Chuck Quirmbach

The second story in our series, "In Warm Water: Fish & the Changing Great Lakes."

Scientists say one way climate change is harming the Great Lakes is by warming the water too quickly in the spring.

That warm-up can decrease food for tiny creatures in the lakes--the creatures that game fish like trout and salmon eat.

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The Environment Report
6:00 am
Mon September 30, 2013

A chilly Lake Superior warms up

Herring fisherman and president of the North Shore Commercial Fishing Association, Steve Dahl, says the commercial fishing industry on Lake Superior is doing better than ever, but experts predict fish populations will shift due to warming waters.
Photo by Doug Fairchild, courtesy of the Minnesota Sea Grant Institute.

You can listen to the first piece in our series above.

We kick off our week-long series In Warm Water: Fish and the Changing Great Lakes with a look at Lake Superior.

It has long been the coldest and most pristine Great Lake. Its frigid waters have helped defend it from some invasive species that have plagued the other Great Lakes.  But Lake Superior’s future could look radically different. Warming water and decreasing ice are threatening the habitat of some of the lake’s most iconic fish.

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The Environment Report
12:00 pm
Tue September 17, 2013

Salmon's favorite food dwindling in Lake Michigan

Alewives washed up on shore.
Lester Graham Michigan Radio

An interview with Peter Payette.

It looks like food for salmon will continue to be scarce in Lake Michigan. Researchers say it appears not many alewives were born in the lake this year - and salmon eat almost nothing else.

Neither salmon nor alewives are native to the Great Lakes, but it's bad news for people trying to keep the billion-dollar sport fishery alive in Lake Michigan.

Peter Payette is with our partners at Interlochen Public Radio and he's been covering this story. He explains that every year researchers go out on the lakes to see what’s happening.

"One of the important surveys is of prey fish, the little feeder fish that big fish like salmon like to eat, and in Lake Michigan this year they found very few newborn alewives. There are alewives in the lake, ones that were born in years past. But the young of the year, the new class of alewives; they found very few," he says.

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Stateside
5:19 pm
Mon July 15, 2013

The Great Lakes need help to stay stocked with fish

Flickr

An interview with Gary Whelan of the State Department of Natural Resources.

Here's something to think about the next time you pick up a fishing pole and cast into one of the Great Lakes.

That fish you catch might have gotten there not courtesy of Mother Nature, but rather with some help from the Michigan Department of Natural Resources.

This year alone, the MDNR will stock about 19 million fish into the Great Lakes.

Gary Whelan is with the State Department of Natural Resources and he joined us today from Lansing.

Listen to the full interview above.

The Environment Report
11:21 am
Thu July 11, 2013

Unlocking the secrets of sea lamprey love

MSU researcher Yu-Wen Chung-Davidson with a sea lamprey.
Rebecca Williams Michigan Radio

You can listen to today's Environment Report above.

The sea lamprey is an invasive fish with a round mouth like a suction cup.  It latches onto big fish like lake trout and salmon, drills its razor sharp tongue into them, and gets fat drinking their blood and body fluids. A single lamprey can kill up to 40 pounds of fish in its lifetime.

Scientists spend a lot of time trying to outsmart them, and they’ve just made a new discovery.

When you’re a male sea lamprey, with that slimy skin, and a suction cup full of teeth for a face: you’ve got to compensate for that somehow.

Hey baby, is it hot in here? Or is it just me?

It turns out male sea lampreys are hot. They grow a swollen ridge on their back when they’re sexually mature. Scientists at Michigan State University have discovered that ridge heats up when males get around a lady lamprey.

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Environment & Science
4:54 pm
Tue June 18, 2013

Study shows Asian carp eggs could survive in tougher conditions than previously thought

Asian carp can grow to weigh up to 100 pounds.
Kate Gardiner Creative Commons

Wildlife managers could have a harder time controlling spawning Asian carp, if they escape into the Lake Michigan from Chicago-area shipping canals. That's according to a report released by the U.S. Geological Survey.

Elizabeth Murphy is a hydrologist with the USGS. She co-authored the study.

Murphy says new data shows fertilized Asian carp eggs can incubate in waterways that are only 16 miles long. That’s a lot less than the 62 miles scientists thought the drifting eggs needed.

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The Environment Report
8:37 am
Thu May 30, 2013

Prehistoric fish species with 'personalities' get help from humans to survive

Kids get a chance to see the small sturgeon raised in the facility up close during a release party in 2011.
Kazoo Sturgeon kazoosturgeon.org

You can listen to today's Environment Report above.

It’s near the end of spawning season for Michigan’s oldest and biggest fish species, the lake sturgeon. Overfishing and hydraulic dams built to power industry have wiped out many lake sturgeon populations in the Great Lakes.

A group of people and government agencies are trying to increase the odds the kind of sturgeon specific to the Kalamazoo River will survive.

Sturgeon have been around since the age of dinosaurs. So they’re a lot different from other fish in the Great Lakes. They don’t have a normal skeleton. Instead, they’ve got these bony plates on the outside of their bodies, called scutes. They have no fish scales.

“They’re kind of rubbery on the outside and they are extremely docile, unlike the fish with the flopping and all that,” said Ron Clark. He’s with the Kalamazoo River Sturgeon Restoration Project out of New Richmond.

“They let you move them; they let you hold them,” Clark said.

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The Environment Report
9:00 am
Tue May 28, 2013

The curious history of a tasty little Great Lakes fish

The Chubby Mary ® has a smoked chub in it.
Photo courtesy of The Cove. Used with permission.

You can listen to today's Environment Report above.

Not too long ago, we reported that native fish are doing really well in Lake Huron.

The fish involved are not exactly well known species. But there is one that’s a household name in lakeshore communities. Its success is sparking some scientific debate.

A fish cocktail

The owners of The Cove in Leland have a problem. Food and travel writers who pass through seldom forget to mention the Chubby Mary®.  It’s a Bloody Mary with a smoked chub in it.

Mario Batali even put a photo of the cocktail on Bon Appetit’s website along with his endorsement.

The problem is there aren’t many chubs for sale these days because they are really hard to find in the Great Lakes.

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Environment & Science
2:14 pm
Sat July 14, 2012

2 sturgeon found washed ashore off Lake Huron

Lake Sturgeon
MI DNR website

The Times Herald in Port Huron reports that a Lakeport resident found a 3-foot-long sturgeon this week on a beach.

 The newspaper reports that a 4-foot-long sturgeon also washed ashore in Fort Gratiot, northeast of Detroit.

Michigan Natural Resources fisheries biologist Mike Thomas says it's not unheard of for small numbers of the fish to wash up in one week, but he is "kind of watching what's going on."

Environment & Science
3:26 pm
Tue June 19, 2012

Possible signs of Asian carp found near Lake Michigan

Juvenile silver carp, seen here, can grow up to weigh 100 pounds.
user MirkoB Wikimedia Commons

A survey recently conducted by the U.S. Army Corps of Engineers showed positive evidence for genetic material from silver carp in southwest Chicago. 

The May 22 test showed 17 positive identifications for the DNA of silver carp in 112 sites sampled in Lake Calumet and Little Calumet River through a process called "eDNA," or environmental DNA testing. The test involves filtering water samples for fragments of DNA shed by target species.

Genetic material left from carp tissue, mucus, feces or urine is not a certain indication of the presence of a live Asian carp; the DNA found in testing could have come from dead fish or water from another source.

Researchers also tested for bighead carp in the area, another species of Asian carp, though all results were negative. 

The AP reports:

Jared Teutsch, water policy advocate for the Alliance for the Great Lakes, said in a statement Monday the findings mean "another year of worry" about Asian carp.

Bighead and silver carp were imported from Asia. They have migrated up the Mississippi River and its tributaries. An electric barrier is meant to block them.

Dozens of water samples taken beyond the barrier in recent years have contained Asian carp DNA, although just one actual carp has been found there.

-Elaine Ezekiel, Michigan Radio Newsroom

Environment & Science
2:09 pm
Mon June 18, 2012

DNR to search lake after illegal carp report

A Michigan DNR group today will search for Grass Carp, seen here.
user Dezidor Wikimedia Commons

Wildlife experts are searching a southern Michigan lake for illegal carp this week after a fisherman submitted a photo of a 3-foot-long grass carp, a species of Asian carp.

A crew traveled today to set up nets in Marrs Lake in Lenawee County, about 20 miles southeast of Jackson. Department of Natural Resources agency biologist Todd Kalish  says the crew plans to pull out the nets on Thursday to inventory what's found.

MDNR Fisheries Specialist Elizabeth Hay-Chmielewski traveled with that group today.  She says the grass carp is capable of disrupting a lake's ecosystem.

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Environment
10:56 am
Fri July 1, 2011

Swimming Upstream: Toxins in Great Lakes fish (part 7)

Advice on cleaning fish to cut away fat and remove certain contaminants.
Image courtesy of Wisconsin Sea Grant

Today, we wrap up our series, Swimming Upstream. Dustin Dwyer traveled all around the Lower Peninsula to gather stories for this series. And today we have a story we wish we didn't have to do. It's the story of toxins in our fish. 

Here's Dustin's story:

A few weeks ago, Joe Bohr got a surprise. He's a researcher for the Michigan Department of Environmental Quality. He was looking at some numbers for PCB contamination in carp caught in canals in St. Clair Shores.

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