Experiment to Develop sea-run from land-locked Sockeye Salmon (Oncorhynchus nerka kennerlyi)

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Abstract
Kokanee eggs from the Kootenay area were transferred to Cultus lake, hatched, reared to yearling size, marked by removal of both pelvic fins and released to proceed seaward along with the normal sockeye migration from Cultus. No returns of four-year-old adults, the most common age group for the Fraser, were obtained, but the following year 25 five-year-olds were recovered from 34% of the commercial fishery sampled and 17 adults bearing the correct mark were taken at Cultus. Ages could not be determined, therefore some or all of these may have been mismarked four-year-olds. The results indicate that sea-run sockeye can develop from kokanee populations where migration to sea is possible. It is suggested that the size difference between sockeye and kokanee is more likely due to environment than to heredity. Evidence for habit is less clear.

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