Muskellunge (Esox masquinongy) in Lake Scugog were implanted with radio transmitters in 1987 and 1988 to track movements over 14 months to help determine if the management regulations in pace were adequate to protect the muskellunge entering a spawning area via culverts under a highway. Summer home ranges were established by the muskellunge and these did not appear to change in the fall. Some fish exhibited pre-spawning behavior by staging close to the spawning area in the winter. The adult muskellunge entered the marsh in early April and stayed ten days in 1987 and 25 days in 1988. No tracking evidence of fractional spawning was noted and the adults had left the marsh well before the second Saturday in May, the opening of walleye (Stizostedion vitreum vitreum) season.