INFLUENCE OF TEMPERATURE AND SUBMERGENCE DEPTH ON PASSIVE SORTING OF INVASIVE SEA LAMPREY, CREEK CHUB AND WHITE SUCKER ACROSS LOW-HEAD LAMPREY BARRIERS
The invasive sea lamprey (Petromyzon marinus) has negatively affected the aquatic ecosystem of the Great Lakes. Physical barriers are used to control sea lamprey populations but often prevent native fishes from moving through rivers and migrating upstream. This research investigates the kinematics of sea lamprey swimming at 1, 3 and 7 cm water depths and assesses the abilities of creek chub (Semotilus atromaculatus) and white sucker (Catostomus commersonii) to swim up wetted, inclined ramps designed for fish passage across low-head lamprey barriers. The frequencies, amplitudes, and velocities of the sea lamprey tail beat were determined. Creek chubs and white suckers swam up inclined fish passage devices at two temperature ranges (10-13°C and 18-20°C) typical of sea lamprey migration. Initial results indicate that sea lamprey swimming efficiency is reduced at a depth of 1 cm and that both creek chubs and white suckers can pass a fish passage device with a configuration that was shown to block sea lamprey. This study provides support for the use of our ramp as a fish passage device for at least two native fishes and shows that shallow water can restrict lamprey movement.
Nayeli Sanchez (Primary Presenter/Author), Eastern Michigan University , firstname.lastname@example.org;
Nicholas Corniuk (Co-Presenter/Co-Author), Eastern Michigan University, email@example.com;
Ulrich Reinhardt (Co-Presenter/Co-Author), Eastern Michigan University , firstname.lastname@example.org;