Production of coho reared in sea-pens in Indian Arm, 1978 and 1979 brood years / by A.Y. Fedorenko and E.A. Perry.: Fs97-4/1768E-PDF

"During the fall of 1979 and 1980, approximately 120,000 and 100,000 coho fry respectively were transported from the Capilano hatchery to sea-pens in Indian Arm. Fry were reared for up to 11 months, then released the following year in three differentially tagged groups of different sizes on three separate dates (May, June and July). Approximately 91,000 and 85,000 coho smolts were released in 1980 and 1981 respectively. Sea-pen rearing survivals averaged 76% and 86% for the 1978 and 1979 broods respectively. The estimated smolt-to-adult survivals for the respective broods, based on tag recovery, were 10.2% and 9.0%. The July release groups had the lowest marine survival and smallest adult size but both June and July groups contributed more to the local Georgia Strait sport fishery compared to the May group. The project failed to provide a year-round local sport fishery in Indian Arm but showed that release size and timing may affect coho marine survival and adult size"--Abstract, page v.

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