Abstract
Abstract As part of a program to restore Atlantic salmon Salmo salar to the Connecticut River system, 10 year-classes of fry were stocked to produce smolts in Sandy Brook, Connecticut. During 1980–1986, fry were obtained from sources outside of the Connecticut River system; a geographically distant stain from Iceland was stocked in three of the years (1980, 1981, 1983), and the Penobscot strain, which originated from several rivers in Maine, was stocked in four of the years ( 1982, 1984, 1985, 1986). As restoration efforts continued, fry originating from adults that had returned to the Connecticut River were stocked in the final three years (1988, 1989, 1991). Although all strains produced a predominance of age-1 and age-2 smolts, length characteristics of smolts differed among strains. Total lengths of Icelandic smolts averaged 9–11 mm smaller at emigration at age 1 and 13–21 mm smaller at emigration at age 2 than both New England strains. Based upon minimum lengths that 95% of all smolts attained the pr...
Published Version
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