Assessment of the Dunville Fishway for Passage of Walleyes from lake Erie to the Grand River, Ontario

摘要

A Denil fishway in Dunnville, Ontario was built to provide upstream passage for walleyes (Stizostedion vitreum) form Lake Erie to the Grand River. Few walleyes have been observed to use this fishway. Coded raiotelementry was used to track 24 adult walleyes (12 male, 12 female) downstream from the fishway to explore reasons for limited use. Activity was monitored by a fixed array of three antennas within the fishway that continuously scanned for signals form all radio-tagged fish, and by mobile tracking.