Sea lamprey control planned for Tittabawassee River system - WNEM TV 5

Sea lamprey control planned for Tittabawassee River system

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U.S. Fish and Wildlife Service announced Thursday personnel will apply lampricides to the Tittabawassee River system in Midland and Saginaw Counties to kill sea lamprey larvae burrowed in the stream bottom.

Sea lamprey larvae live in certain Great Lakes tributaries and transform to parasitic adults that migrate to the Great Lakes and kill fish.

Officials said failure to kill the larvae in streams would result in significant damage to the Great Lakes fishery.

Infested tributaries must be treated every three to five years with lampricides to control sea lamprey populations.

The U.S. Fish and Wildlife Service said a study found lampricides “pose no unreasonable risk to the general population and environment when applied at concentrations necessary to control larval sea lampreys.”

“However, as with any pesticide, the public is advised to use discretion and minimize unnecessary exposure.  Lampricides are selectively toxic to sea lampreys, but a few fish, insect, and broadleaf plants are sensitive. Persons confining bait fish or other organisms in stream water are advised to use an alternate water source because lampricides may cause mortality among aquatic organisms stressed by crowding and handling.  Agricultural irrigation must be suspended for 24 hours, during and following treatment,” the U.S. Fish and Wildlife Service said in a press release.

The applications will be conducted between May 29 and June 7. Application will be complete in about three days.

The dates are tentative and may be changed based upon local weather or stream conditions near the time of treatment.

For additional information in the U.S. call 1-800-472-9212 and in Canada call 1-800-553-9091. TTY users may reach the Marquette or Ludington Biological Stations through the Michigan State Relay Service at 1-800-649-3777.

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