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FOR MORE INFORMATION CONTACT:

Mike Donofrio - 715-582-5050 or Trish Ossmann, DNR public affairs - 920-662-5122

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PESHTIGO, Wis. -- Nearly two dozen sturgeon are now equipped with high-tech transmitters as biologists continue to try and learn more about the prehistoric fish.

Technology used in fish finders and submarines is now being applied to tracking sturgeon movements.

While on the banks of the Peshtigo River, state fisheries staff performed a surgery of sorts on some of the larger sturgeon netted below the dam.

More on sturgeon season headlines from around Wisconsin | browse, share photos | Explore record sturgeon | Registration stations

Biologists hope it will help them better understand spawning patterns and whether the fish always return to spawn in the same river or vary their patterns, explained Mike Donofrio, Department of Natural Resources fisheries supervisor in Peshtigo.

Were using transmitters that are about the size of a magic marker, so its based on the weight of the fish as to whether we can put the transmitter in, Donofrio said.

The tube-shaped device is about 4 inches long by about three quarters inches wide. Sonar stations set up along the Fox, Oconto, Peshtigo and Menominee Rivers detect the sounds emanating from the transmitters.

From 2005 to 2009 roughly 60 fish were given the transmitters but those only lasted three years. The new transmitters are expected to last eight years.

Were hoping to get two spawning cycles from these transmitters so four years from now we can find out if that fish spawning in the Peshtigo or is it going to spawn the Oconto or another river? explained Donofrio.

A grant from the U.S. Fish and Wildlife Service will enable DNR staff to implant transmitters into 105 fish over the course of the next two years and continue to monitor their movements in the four Green Bay rivers.

For more information about Wisconsin's sturgeon population search the DNR website for "lake sturgeon."

More news from the Wisconsin Department of Natural Resources.

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