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Sterile lamprey release shows positive progress in controlling sea lamprey in Michigan rivers

U.S. Fish and Wildlife crews were busy last fall capturing lamprey from the Maple River in Michigan. Inset: This collection yielded a bucket full of native lamprey. During the earlier days of testing and collecting, only two predatory sea lamprey were seen. (Contributed photos)

Attempts to control sea lamprey populations in Michigan river systems are showing positive results.
Efforts to control sea lamprey populations in the Cheboygan, Pigeon, Sturgeon, and Maple rivers since 2016 have resulted in no larval lamprey being produced in the Sturgeon and Maple rivers in years following the efforts and significant reductions in the Pigeon. Lamprey eradication in the Cheboygan River through the use of sterile male sea lamprey took place in 2017.

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