“To help combat the invasive, eel-like fish, Gov. Scott Walker signed legislation on Thursday for the state to spend up to $564,500 in the next two fiscal years on lamprey control efforts on Lake Michigan and Lake Superior.The controls include chemical treatments and barriers that block the movement of swimming lamprey, which according to the Wisconsin DNR ‘have no jaws, no true teeth, no paired fins and a skeleton made of cartilage, not true bone.’The state funds are expected to be matched with federal dollars for control efforts that are taking place across the Great Lakes basin.In Lake Michigan, 126 of 511 tributaries have historic records of sea lamprey production. Of those 83 tributaries have been treated with chemicals, according to the Fish and Wildlife Commission. A major focus of treatment took place on the Oconto River in northeastern Wisconsin, where about 60 miles of the river were treated.”
Category:
In the news: Wisconsin governor signs lamprey control measure
December 18th, 2013 by Irene MilesIn the news: Genetic mapping may help solve the invasive lamprey dilemma
March 25th, 2013 by Irene Miles
From the Great Lakes Echo:
“Sea lamprey – unlike the silver and American brook species – come from the Atlantic Ocean, accidentally introduced to the Great Lakes through shipping canals.
Like the native silver lamprey, sea lamprey are parasitic, with sharp teeth and a sucking disc mouth that allows them to feed on the blood of host fish. Also like the silver lamprey, they are harmless in their early stages of development.
Sea lamprey spend the first four years of their life as larvae in the soft bottom and banks of lakes or streams, according to the New York Department of Environmental Conservation.
As they mature, they change into the harmful predator threatening the Great Lakes today, said Yu-Weng Chung-Davidson, a senior research associate on Li’s team.”
Recent News
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Some partnerships just make sense. Happy Valentine’s Day from IISG! 💕
This February marks a major milestone: 30 years of aquatic invasive species outreach by our team! To celebrate, IISG Director, Stuart Carlton, and Strategic Communication Coordinator, Renie Miles, sat down for a Sea Grant Chat with two key figures in IISG’s AIS history: Pat Charlebois, our assistant director and program leader, who spent over two decades leading our prevention efforts, and Katie O’Reilly, who took over that role in 2022. We discussed the evolution of the invasive species issue in the Great Lakes, the shift toward understanding human behavior, and the creative strategies that make this team so effective.
Dive into the full interview at the link in bio.
Introducing the Lake Michigan Explorer!
Start exploring the varied factors that impact the Great Lakes with our Explorer Series. This searchable database of external resources can help you find hands-on activities that spark curiosity and inspire action.
✨ What’s inside?
Lesson plans, fact sheets, and reading materials
Engaging videos and visualizations
Easy-to-use filters by grade level, topic, and time.
Perfect for classrooms and informal learning, this resource empowers students to become stewards of the Great Lakes.
🔗 in bio for more.
Announcing a Lake Superior immersion for educators! Formal and nonformal 5-12th-grade educators from throughout the Great Lakes states are invited to apply for an exciting opportunity to spend a week aboard a U.S. Environmental Protection Agency research vessel alongside scientists and to bring Great Lakes science back to their classrooms. The program, organized by the Center for Great Lakes Literacy, is July 7-13, 2026, on Lake Superior.
🔗 Apply today at the link in bio.
📅 Application Deadline: February 28, 2026
This program is made possible by Illinois-Indiana Sea Grant and CGLL with funding and support from EPA, NOAA, and the Great Lakes Restoration Initiative.
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