2013-07-04 / Outdoors

FWS to apply more lampricide in area

MANISTIQUE – U.S. Fish and Wildlife Service personnel will apply lampricides areas in Schoolcraft and Mackinac counties, on or about July 12-29. The areas include: Swan, Parent, Bursaw, Southtown, Marblehead, and Point Patterson creeks.

Lampricide is used to kill sea lamprey larvae burrowed in the stream bottom. Application will be complete in about six days. Application dates are tentative and may be changed based upon local weather or stream conditions near the time of treatment.

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

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. Environmental Protection Agency and Health Canada Pest Management Regulatory Agency have reviewed human health and environmental safety data for lampricides, and in 2003 concluded that the lampricides (Lampricid and Bayluscide) pose no unreasonable risk to the general population and the 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.

Extensive preparations are required for a safe and effective stream treatment. Prior to treatment, personnel collect data on stream water chemistry and discharge. In addition, they may conduct on-site toxicity tests with lampricides and stream flow studies with dyes that cause stream water to appear red or green.

For additional information in the U.S. call 1-800-472-9212 and in Canada call 1-800-553-9091.

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