The Lamprey Eel And Lake Trout:
Remediation (of sorts)
Lake Trout in the Great Lakes
by
Michael J. Hansen
National Biological Service
James W. Peck
Michigan Department of Natural Resources
Lake trout (Salvelinus namaycush) populations in the Great Lakes
collapsed catastrophically during the 1940's and 1950's because of
 excessive predation by the sea lamprey (Petromyzon marinus) and
 exploitation by fisheries.