Seasonal Movement Patterns of Walleye (sander vitreus) in Muskegon River and Musekgon Lake
2006
Abstract
Walleye (Sander vitreus) are known to travel long distances between
spawning, foraging and over wintering habitats. In the Muskegon system walleye have
the choice of moving between Muskegon River, Muskegon Lake and Lake Michigan
throughout the year. The purpose of this study was to determine the seasonal
movement of walleye in the Muskegon system.
In 2004 and 2005 a total of 15 walleye were implanted with radio transmitters and
5 with ultrasonic transmitters. During March, April, and May walleye were located in
Muskegon River, near Croton Dam, presumably to spawn. By June 10 of 12 fish
tracked had departed the river for Muskegon Lake or left the Muskegon system. In
June, July and August 85% (17/20) of tracked walleye inhabited Muskegon Lake or
were outside the Muskegon system. From September through February 6 of 7 tracked
fish were located in lacustrine habitat. I documented one walleye periodically traveling
between Muskegon Lake and Lake Michigan during November and December. Based
on movement results telemetry data were categorized into three time periods; spring,
which included pre- and post spawning periods (March May), summer (June
August), and winter (September February).
Range (total distance displaced) of tagged walleye was greatest during spring
due to spawning migrations in Muskegon River. Spring range of all walleye varied from
3,467 to 150,900 m; summer range varied from 131 to 46,114 m; and winter range from
326 to 42,650 m. There were significant differences between spring and summer
ranges (p< 0.001) and between spring and winter ranges (p = 0.024), but not between
2
summer and winter ranges (p = 0.223). During summer, total range of fish inhabiting
Muskegon River was significantly different than those fish in Muskegon Lake. These
differences between Muskegon River and Lake are attributed to the energetic costs for
large walleye to search long distances for prey in flowing water versus searching for
prey in the lacustrine environment. Movement results from this study emphasize the
importance of the habitat connection within this system, and may also assist managers
in determining when and where to calculate population estimates.
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