The St. Marys River: Has a flow volume of 75,000 cubic meters per second

1. “Until sea lamprey populations in the St. Marys River can be reduced, no fishery management authority can move forward comfortably with fishery management or restoration plans in Lake Huron. The high lamprey populations from the St. Marys River adds tremendous instability to the Lake Huron fish community.” --Tom Gorenflo, 1995-1996 Chairman, Lake Huron Committee

2. “The Lake Huron Committee resolves that lake trout not be stocked north of 45 degrees [in Lake Huron] until two years before effective sea lamprey control measures are scheduled for the St. Marys River.” --Executive Summary, Lake Huron Committee Meeting, 1993

3. The St. Marys River: • Has a flow volume of 75,000 cubic meters per second • Is 25 times larger than the largest river ever treated for sea lampreys

4. St. Marys River sea lamprey control will cost an additional$5.7 million over five years.

5. “Governor Engler challenged government officials in both Canada and the United States, as well as other Great Lakes states and Ontario, to match Michigan’s financial commitment to the sea lamprey battle.” --Governor Engler’s News Release, June 24, 1997

6. October, 1997 $ 3,000,000 Sea Lamprey Control Pay to the Order of: Three Million Dollars Memo State of Michigan For the St. Marys River Michigan contributes $3 million to sea lamprey control on the St. Marys River! “To protect our fish, anglers, and [the fishing] industry, we must stop the lifeblood from literally being sucked out of these fish by sea lampreys.” --Governor John Engler announcing Michigan’s contribution to sea lamprey control

7. With St. Marys River Sea Lamprey Control, Everyone Wins . . . But Sea Lampreys!

8. St. Marys River Control Methods • Controlling larvae • Granular Bayluscide • Reducing Spawning • Enhanced Trapping • Sterile-male-release-technique

9. To formulate a control plan for the St. Marys River, the Great Lakes Fishery Commission . . . • Learned Through Assessment • Location of sea lamprey larvae in the river • Considered Lampricide Options • TFM • Granular Bayluscide • Considered Alternative Control Options • Barriers • Trapping • Sterile-male-release-technique

10. Effective sea lamprey control on the St. Marys River would be impossible without the use of alternative control techniques

11. Granular Bayluscide Applications • Applied to 200 acres in 1998 • Applied to 2000 acres in 1999 • About 1% of the total surface area of the river will be treated • Granular Bayluscide will eliminate about 60% of the larvae in the St. Marys River

12. HURON *Blackfin Cisco *Blue Pike *Deepwater Cisco Kiyi Lake Trout Shortjaw Cisco *Shortnose Cisco ONTARIO Atlantic Salmon Bloater *Blue Pike Kiyi Lake Trout Sauger Shortjaw Cisco *Shortnose Cisco ERIE *Blue Pike Lake Trout Longear Sunfish Paddlefish Sauger Shortjaw Cisco Extirpated Species (* = Now Extinct) MICHIGAN *Blackfin Cisco *Deepwater Cisco Kiyi Lake Trout Shortjaw Cisco *Shortnose Cisco Silver Chub 1998 Cudmore and Crossman, Royal Ontario Museum

13. Information Needs for a St. Marys River Control Strategy: • Location of sea lamprey larvae in the river • Understanding TFM effectiveness • Understanding granular Bayer effectiveness • Necessary trapping efficiency • Potential for alternative controls • Sterile-male-release-technique • Barriers

14. Assessing Control On the St. Marys River • AMAP • Index Surveys • Adaptive process which can change depending on assessment results