Fisheries, Midwest Region
Conserving America's Fisheries

Sea Lamprey
Sea Lamprey

Motorboat Operator Certification Course
Motorboat Operator Certification Course


Larval Population Assessment

Ludington Biological Station staff assesses the presence, distribution, abundance and size structure of larval sea lampreys in Great Lakes tributaries and lentic areas located in the lower peninsula of Michigan, Indiana, Ohio, Pennsylvania, and New York. Larval sea lamprey populations are assessed in most streams with backpack electrofishers, and a granular lampricide is used to assess larval populations in streams and lentic areas greater than 1.0 m in depth. Data are used to rank and prepare streams for lampricide treatment and to evaluate various control options.

Sea Lamprey Control

Ludington Biological Station staff control larval sea lamprey populations by applying federally registered lampricides to infested streams and lentic areas in the Great Lakes. Prior to each treatment, water discharge and chemisty data are collected and used to determine the appropriate concentration and duration of lampricide to apply. Lampricide concentrations are closely monitored in each stream to ensure larval sea lamprey populations are destroyed and non-target species mortality is minimized.

Sea Lamprey Control Research

The Ludington Biological Station supports research designed to advance new methods of controlling sea lampreys, such as the use of attractants and repellents, the environmental and physiological determination of sea lamprey sensitivity to lampricides, and research designed to determine the origin of parasitic-phase sea lampreys.

Lampricide Storage Facility

The Ludington Biological Station maintains a lampricide storage facility, where the majority of the lampricides used to control sea lampreys in U.S. waters of the Great Lakes are stored.

Motorboat Operator Certification

The Ludington Biological Station is one of the host stations for the Service’s Motorboat Operator Certification Course, where Service staff are properly trained in the safe use and operation of watercraft.

Public Education

The Ludington Biological Station educates the public regarding the impact and management of aquatic invasive species.


Last updated: March 31, 2016