Biochemical Genetic Stock Identification of Chum Salmon in Southern British Columbia, 1986Microform - 1987
Chum salmon returning to spawn in rivers tributary to Johnstone and Georgia Straits migrate primarily from the north through Johnstone Strait, although in some years there can be a component of the run returning from the south through Juan de Fuca Strait. The identification of the origins of chum salmon in these fisheries has become an increasing problem for management. This report describes a method of testing for genetic variability among chum salmon stocks. Samples were collected in the fishing areas on the northwest coast of Vancouver Island, Johnstone Strait, mid-Vancouver Island, San Juan, and Nitinat to determine the stock composition in these mixed fisheries. In general, 150 chum salmon were sampled per week or, in the case of commercial fisheries, per fishing period. Tissue samples of heart, liver and muscle were collected within 24 hours of catch, frozen, and sent for electrophoretic analysis. Chum salmon from the troll fishery off the northwest coast of Vancouver Island were randomly selected from day trollers returning to Winter Harbour. Stock composition was then estimated.
Publisher: Nanaimo, B.C. : Dept. of Fisheries and Oceans, Fisheries Branch, 1987
Description: 19 p. : maps
Branch Call Number: MF BC-DOC 90-00768