(Provided by MDNR)

Those who fish Michigan's Great Lakes may catch a walleye with one of two types of tags: a jaw tag or a disk tag (both pictured here). Those who do are asked to report it to the DNR.

Those who fish Michigan's Great Lakes may catch a walleye with one of two types of tags: a jaw tag or a disk tag (both pictured here). Those who do are asked to report it to the DNR.

The Michigan DNR has jaw-tagged another 3,000 walleyes in a number of Saginaw Bay tributary rivers and wants anglers who catch them to collect information 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 fishís 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. Each tag is stamped with a unique identifying number and a P.O. Box address. If anglers prefer, they can report a tagged walleye online at michigandnr.com/taggedfish/. Anglers can keep or release the fish. Anglers are reminded that to be eligible for a reward, photos of the flattened tag are required. If the fish is released and anglers are not interested in being eligible to receive a reward, anglers should leave the tag in the fishís jaw and not remove it. Also new this year is a brightly colored disk tag used on some fish to test how well anglers notice and report the tags.

This information is essential to measuring the health of the population and is critical data that is directly used in planning the future management direction needed to protect and enhance this important fishery, said David Fielder, research biologist out of the DNRs Alpena Fisheries Research Station. Besides ensuring the walleye fishery remains sustainable, we also annually estimate the population size with the aid of these tag reports.

The tagging operation occurs each spring on the Tittabawassee River and other Saginaw Bay tributaries during the walleye spawning run. They are collected with electrofishing boats that temporally stun the fish to allow fisheries biologists and technicians to collect vital statistics, tag the fish, and release them back into the river after the fish has recovered. After spawning, walleyes migrate back into Saginaw Bay and a large number migrate out of the bay into Lake Huron. The fish that migrate out of the bay have been found ranging to the Straits of Mackinac to the north and Lake Erie to the south.