fish

Environment
11:29 am
Tue June 14, 2011

Lake trout on life support in Lake Michigan

Lake trout were once the big game fish in all of the Great Lakes. Some people still love catching and eating them.
Photo courtesy of Michigan Sea Grant

For twenty years now the federal government has been trying to restore wild lake trout in Lake Michigan. Lake trout are native to the Great Lakes and were once the big game fish in all the lakes. The species is doing well in Lakes Superior and Huron these days. But recovery efforts in Lake Michigan have been almost a total failure.

Lake trout don’t have a big fan club. Anglers would prefer to land a salmon. And retail markets for lake trout are weak.

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Environment
11:00 am
Tue June 14, 2011

Fish-killing virus rears its head again in mid-Michigan lake

VHS has been found in a mid-Michigan lake. The virus kills fish, and sport fisherman worry it will decrease the stocks of big fish like muskie. (Fishing guide Rich Clarke of Clayton, NY).
Rich Clarke

The fish-killing virus is known as viral hemorrhagic septicemia and it has been found in this region since 2003, according to the College of Veterinary Medicine at Iowa State University. Massive fish die-offs were first recorded in the 2005.

Now, another die-off has been found. From the Associated Press:

HARRISON, Mich. (AP) - A fish-killing virus has been detected again in a lake near the mid-Michigan community of Harrison.

The Michigan Department of Natural Resources on Tuesday announced that viral hemorrhagic septicemia, or VHS, has been confirmed in Budd Lake.

The 175-acre lake in Clare County experienced a die-off of largemouth and smallmouth bass, bluegills, and pumpkinseed sunfish in April and May. Test results indicate that largemouth and smallmouth bass were positive for VHS. Other results were pending.

A similar die-off involving bluegill, black crappie, largemouth bass and muskellunge occurred in the spring of 2007, and VHS was identified in the lake after those deaths. The state says VHS was undetected through 2010 in testing that took place each year.

Budd Lake is one two Michigan inland lakes where VHS has been confirmed.

The virus is troubling, especially when it attacks 60 pound sport fish like the muskellunge. The Environment Report captured what the virus means to sport fisherman in a piece by David Sommerstein.

Sommerstein reports that fish exposed to the virus can develop immunity, but biologists worry that new generations of fish won't carry that immunity with them, so they're vulnerable when the virus comes around.

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Environment
10:49 am
Thu May 5, 2011

Aircraft chemical found in Great Lakes fish

Researchers from Environment Canada found a chemical used in aircraft fluids in lake trout in the Great Lakes.
Photo courtesy of Michigan Sea Grant

New research finds that fish in the Great Lakes are contaminated with a chemical used in aircraft hydraulic fluids.

Researcher Amila DeSilva works for Environment Canada, which is like the EPA in the U.S.

She says there have been studies on a number of perflourinated chemicals. They’re used to make textiles, upholstery, paper, and many other things. Studies have shown these types of chemicals can have toxic effects in humans. But not much is known about a chemical called perfluoroethylcyclohexanesulfonate - or PFECHS for short.

DeSilva says no one has really studied whether it's toxic.

She wanted to see if PFECHS was in the environment, so she and her colleagues sampled water and fish in the Great Lakes, specifically lake trout and walleye:

“We were really, really surprised to find it in fish. Because, just based on the structure and our chemical intuition we thought, ‘okay, it would be more likely to be in water than in fish’ so when we found it in fish, when you find anything in fish, it’s a whole other ballgame because humans consume fish.”

DeSilva says other perflourinated acids are endocrine disruptors. That means they create hormone imbalances in humans, and they have other toxic effects. She says once these chemicals are released into the environment they don’t degrade, they just build up. That’s why use of some chemicals in this class is highly restricted in the U.S. and Canada.

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Environment
12:15 pm
Tue April 26, 2011

Salmon fishery on the rocks

The Chinook salmon was initially introduced to the Great Lakes in the 1870s. Michigan, New York and Wisconsin reintroduced the Chinook salmon to the Great Lakes in 1966.
Photo courtesy of USFWS

There’s a decision looming for Lake Huron that would have been unthinkable 10 years ago. The state must decide whether it should keep putting chinook salmon in the lake. The fish has been the driving force behind sport fishing in the Great Lakes. But the salmon’s future in the Upper Lakes is now questionable.

It’s hard to overstate how drastically salmon transformed the Great Lakes after they were introduced more than 40 years ago.

Ed Retherford is a charter boat captain on Lake Huron. He says in the old days on a weekend in Rockport he’d see cars with boat trailers backed up for a mile or two waiting to launch. But that’s all gone now.

“You’d be lucky, except maybe for the brown trout festival, you’d be lucky to see twenty boats there on a weekend. It just decimated that area. You can imagine the economics involved.”

Chinook or king salmon practically disappeared from Lake Huron about seven years ago. Most of the charter boats are gone now because the kinds of fish that remain are just not as exciting to catch as salmon.

State officials figure little towns like Rockport lose upwards of a million dollars in tourism business every year without the fishery.

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Environment
11:33 am
Fri March 11, 2011

Lake St. Clair fish kills blamed on cold weather

Big fish kills in Lake St. Clair and along the St. Clair river this winter puzzled some residents and scientists in the area. The Detroit News reported that, "the cause of the massive fish die-offs, which began in mid-December, remains a mystery to state investigators...Dead gizzard shad is a common sight this time of year — but not in the tens to hundreds of thousands being reported this winter."

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Arts/Culture
8:54 am
Wed March 9, 2011

Michigan Christians and Lent, some lower calorie recipes

Eating fish on lent is a symbol of cutting back - a form of fasting.
User scrappy annie Flickr

For Michigan's Christian population (including around 2 million Catholics), today marks the beginning of Lent.

During Lent, many adherents give up meat and dairy products.

Over at the Detroit News, columnist Kate Lawson is serving up a scrumptious-looking lemony shrimp with asparagus, a seafood recipe for people looking for something tasty and healthy.

Lawson also notes there are very good non-religious reasons for wanting to increase the amount of fish in your diet.

"At my house, we follow the U.S. Department of Agriculture's recent release of Dietary Guidelines for Americans, and eat seafood at least twice each week for heart and brain benefits."

The reasons for eating seafood, and the advantages, are significant. Again, from Health.gov:

"Seafood contributes a range of nutrients, notably the omega-3 fatty acids, eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA). Moderate evidence shows that consumption of about 8 ounces per week of a variety of seafood, which provide an average consumption of 250 mg per day of EPA and DHA, is associated with reduced cardiac deaths among individuals with and without pre-existing cardiovascular disease."

But there are some concerns over which types of fish to eat, especially for women of child-bearing age and children. The concern is over mercury exposure and some fish can contain higher levels of mercury than others.

The Environmental Protection Agency has some guidelines to help you avoid mercury in fish in its "One Fish, Two Fish, Don't Fish, Do Fish" brochure.

Meanwhile, the New York Times is whipping up vegan recipes for the meat- and dairy-avoiding portion of their readership, including one for baked beans with mint and tomatoes, the kind of dish that goes perfectly with a stack of unleavened bread.

And, at 384 calories per serving, it's pretty healthy.

And, finally, here's chef Bobby Flay with one last seafood recipe for Lent:

Brian Short - Michigan Radio Newsroom

Environment
3:58 pm
Tue January 11, 2011

Fish die-off along Chicago lakeshore

Gizzard shad along the shore of Lake Erie in 2006. Dieoffs have been reported before.
flickr user molajen

The Chicago Sun-Times is reporting "a bizarre scene evolving along the Chicago lakefront."

Geese and mallard ducks are apparently gulping down thousands of dead fish that are in the ice or floating in the open water around the ice.

The paper quotes Lake Michigan Program biologist Dan Makauskas who says:

"Gizzard shad are pretty sensitive. On the toughness scale, [they] are pretty soft."

Some biologists attribute the die-off to lower oxygen levels because of ice cover around the lakefront.

Former Muskegon Chronicle reporter Jeff Alexander wrote about a gizzard shad die-off on Mona Lake in Muskegon County back in 2008.

That die-off was attributed to a hard winter as well. From Alexander's report:

Gizzard shad die-offs are common in several area lakes. The fish often die during winter as ice cover decreases oxygen levels in the water; the fish also die from thermal shock when the lake warms up rapidly in the spring, said Rich O'Neal, a fisheries biologist for the Michigan Department of Natural Resources.

Gizzard shad are members of the herring family and are native to the Great Lakes.

Outdoors
7:04 am
Mon December 6, 2010

Incoming director of the Michigan DNR wants more hunting, fishing

Rodney Stokes, incoming Director of the Michigan Department of Natural Resources, wants more people in hunt in Michigan
Noel Zia Lee/Flickr

Michigan's soon-to-be Director of the Department of Natural Resources, Rodney Stokes, says he wants more people to hunt and fish in the state.

Stokes was named director of the department by Governor-elect Rick Snyder earlier this month.  Snyder announced he would be dividing the Department of Natural Resources and Environment into two agencies: The Department of Natural Resources and The Department of Environmental Quality.

Stokes told The Detroit News that he wants to expand the focus of the department's recruitment efforts and that he has no plans to increase license fees.

The Associated Press reports:

Revenues from the sale of hunting and fishing licenses were $45.3 million in the most recent budget, said Sharon Schafer, the department's assistant division chief for administration and finance. That's down from 2005 when adjusted for inflation.

Environment
5:19 pm
Fri December 3, 2010

Congress bans an Asian carp that is already here

They're banned, but they're already here. Current distribution of the Bighead Carp in the U.S.
USGS

Update December 3rd 5:13 pm:

Marc Gaden of the Great Lakes Fishery Commission says "as far as I know, no one thinks there are any Asian Carp in Lake Erie." He says Lake Erie is colored red in the USGS map above because two Bighead carp were found in commercial fishman's nets several years ago. They colored the entire Lake red based on these two incidents.

December 1st 5:27 pm:

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Environment
12:28 pm
Tue November 2, 2010

Trout Unlimited launching effort to protect Rogue River watershed

Fisherman casts his line in the Rogue River near Rockford.
Trout Unlimited

Efforts to protect and restore a cold water fishery north of Grand Rapids could serve as an example for the nation.

Fishermen know the Rogue River best for its spring and winter steelhead runs through Rockford. National coldwater conservation group Trout Unlimited also wants to protect habitat for the brook and rainbow trout that live there. So it designated the watershed as its newest "home river."

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Environment
11:03 am
Fri August 27, 2010

Throwing money at the Asian Carp problem

Asian Carp caught in Lake Calumet. The first one caught in the Great Lakes system.
USFWS

The Associated Press reports that The Charles Stewart Mott Foundation is giving $500,000 to the Great Lakes Commission to help it find ways to stop the invasive Asian carp from entering the Great Lakes.

The fish started make their way up the Mississippi River system more than ten years ago after they escaped from fish farm ponds in the south. They were imported to control parasites in the ponds. 

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