Abstract
Abstract Stocking of hatchery-reared rainbow trout (Salmo gairdneri) in the Great Lakes may be a valuable management practice because the survivors, when caught by anglers, are relatively large fish. In this study we planted 132,973 tagged rainbow trout during 1955–59 at 29 locations along Michigan shores of the Great Lakes and Burt Lake. Three stocks of 2- to 3-year-old trout were used: (1) progeny of Michigan hatchery brood stock, (2) progeny of Great-Lakes-run rainbow trout and (3) progeny of sea-run rainbow (steelhead) trout from the State of Washington. Matched plants were used to study four factors that might have influenced recovery rates, namely: (1) month of planting, (2) stock of trout, (3) size of trout, and (4) location of planting (stream versus lake). These, and other plants, also provided information on movement, growth and maturity of rainbow trout in the Great Lakes. The effect of the four factors on angler catch and trout movement and growth was determined by voluntary reports of recover...
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