The Northern Lake Huron Management Unit includes most of the St. Marys River, a large international boundary water connecting Lake Superior to Lake Huron.

River management is coordinated by the St. Marys River Fisheries Task Group, which has representatives from the Michigan Department of Natural Resources, Ontario Ministry of Natural Resources and Forestry, Chippewa Ottawa Resource Authority and member tribes, the U.S. Fish and Wildlife Service, and the Department of Fisheries and Oceans Canada. Lake Superior State University, Sault College, and Algoma University also participate as resource members.

Member agencies will be conducting a fish community survey of the entire St. Marys River during the month of August 2017. During that time fisheries biologists and technicians will be setting survey nets at predetermined sites in the river and capturing a variety of species to collect information on abundance, growth, mortality and size structure of fish populations and compare this latest information against the data collected in previous surveys. Read more

The Michigan Department of Natural Resources today announced it will not collect eggs from Great Lakes muskellunge in the Detroit River this month due to recent fish kills in Lake St. Clair that are attributed to a confirmed, widespread infection of viral hemorrhagic septicemia virus (VHSv). Read more

WASHINGTON, DC, – In a letter sent today to the Trump administration and Congress, a coalition of recreational boating and sportfishing interests urged action to fix America’s broken ethanol policy. The American Sportfishing Association (ASA), Boat Owners Association of The United States (BoatUS), National Marine Manufacturers Association (NMMA) and Marine Retailers Association of the Americas (MRAA) on behalf of the nation’s 12 million recreational boat owners, 46 million recreational anglers and 35,000 recreational boating businesses respectively expressed concern with the Renewable Fuel Standard (RFS).The RFS is the 2005 law that mandates the blending of biofuels such as corn-ethanol into our gasoline. When written, it was assumed that America’s use of gasoline would continue to rise. However, US gasoline usage has actually dropped steadily since 2005 and now the law forces more corn ethanol into fewer gallons of gasoline.

Boaters and anglers need access to safe and approved fuels. The letter said the RFS “…has discriminatorily affected the boating public – groups of boaters and anglers who purchase fuel for their boats… We write to ask that you to set a new course for the RFS – one that takes into account the objective concerns expressed by the boating community.”

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Each year the Michigan Department of Natural Resources receives numerous reports of unique species showing up in waterbodies throughout the state. While oftentimes these reports consist of a single animal being found, occasionally they point to large populations of non-native species where you wouldn’t expect to find them.Screenshot ofHow these species got into the water can be a mystery, but there is one method that’s often the culprit and it’s 100-percent preventable.

Pet and aquarium owners often face the dilemma where they no longer want to keep their various organisms, so they sometimes opt to release them into the wild. Read more

The Michigan Department of Natural Resources Monday announced that test results on fish collected in the ongoing fish kill event on Lake St. Clair were confirmed to be positive for viral hemorrhagic septicemia virus (VHSv). Fish were collected during late March and early April and included gizzard shad, bluegill, and black and white crappie.”A total of 165 fish have been tested thus far using pooled samples of five fish, and of the 33 pooled samples, 31 of them have been positive for VHSv,” said Gary Whelan, research program manager for the DNR’s Fisheries Division. “Ten gizzard shad were tested individually and all were positive for the virus. These results confirm what we initially suspected, given the external signs on the fish, species involved, and timing of the fish kill, all strongly implicating VHSv as the cause of this fish kill.” Read more

The Michigan Department of Natural Resources recently jaw tagged 3,000 walleyes in a number of Saginaw Bay tributary rivers. Anglers who catch any tagged fish are asked to collect information from the fish and report it to the DNR.

The DNR has tagged more than 100,000 walleyes in the Saginaw Bay area since 1981. Jaw tagging is part of a long-term research project to monitor survival and harvest rates and to learn about walleye movement. The program depends on anglers to report when they catch a tagged walleye, catch location, as well as the fish’s length, weight (if known) and tag identification number. Once reported, anglers will receive a letter back detailing the history of their fish.

This year about 20 percent of the tags include a $100 reward for reporting the tag. Read more

The Michigan Department of Natural Resources is investigating several fish mortalities – particularly of gizzard shad – that have been reported by citizens around Lake St. Clair. A number of samples have been collected to determine the cause. Some of the fish may have been affected by viral hemorrhagic septicemia virus (VHSv), a very contagious pathogen, but the DNR is still waiting on confirmation.

“Thanks to the public’s vigilance we are able to get timely samples from these fish mortalities, and it is very likely VHSv is involved,” said Gary Whelan, research program manager for the DNR’s Fisheries Division. “VHSv has been detected in these waters since at least 2003, and when conditions are right the pathogen will cause disease events like this one.”

Many of the collected fish showed the classic external signs of VHSv: bloody patches on the skin. VHSv first caused fish mortalities in the St. Clair-Detroit River corridor in 2006 and occasionally has been detected in these waters since that time. Read more

DNR employee manning fish stocking truck as it unloads cargoThe Michigan Department of Natural Resources today announced it is in the middle of its new fish stocking season. This spring you’ll find DNR fish stocking trucks releasing their prized recreational cargo at hundreds of lakes and streams throughout the state.Fish stocking is a valuable tool used by fisheries managers to restore, enhance and create new fishing opportunities in Michigan’s inland lakes and streams and the Great Lakes. The DNR’s Fisheries Division accomplishes this task by rearing fish at its six fish production facilities located throughout the state, cooperatively managing up to 46 rearing ponds and eight Great Lakes imprinting net pen locations, and maintaining a fleet of 18 specialized fish stocking vehicles. Read more

Small snail, big problem: Researchers track invasive New Zealand mudsnail in Michigan rivers

New video illustrates key identification points of this invader

A tiny invader is threatening prized trout streams in Michigan’s northern Lower Peninsula. A mere 1/8-inch long, the New Zealand mudsnail is barely distinguishable from a grain of sand, but over time its invasive habits can affect the quality and quantity of trout and other fish in the Au Sable, Pere Marquette and Boardman rivers where it has been found.

New Zealand mudsnails were first discovered in the United States in Idaho’s Snake River in 1987. Since then, infestations have spread throughout the western states and into areas of the Great Lakes. The discovery of New Zealand mudsnails in the Pere Marquette River in August 2015 signaled the first detection in a Michigan inland waterway. Within the next year, populations were confirmed in the Boardman and Au Sable rivers. The U.S. Geological Survey has developed an animated map illustrating the New Zealand mudsnail’s movement through the states.

What harm can a snail do?

This brown to black mudsnail, a native of New Zealand, is considered invasive and is prohibited in Michigan due to the environmental harm it can cause to rivers, streams and lakes. Because the snail reproduces by cloning (females a close-up view of the New Zealand mudsnaildevelop complete embryos without fertilization), just one snail can start a population. Read more