Rebuilding Naturally Spawning Coho Salmon Stocks: An Assessment of By-Catch Reduction Measures and Spawning Escapement Stock Composition in the Southern Puget Sound (Fishery Management Area 13D-K).

摘要

We examined the contribution of natural coho salmon to the total coho salmon harvest in the Squaxin Island Tribes commercial coho salmon fishery during the 1999 and 2000 commercial fisheries, and the contribution of hatchery strays to coho salmon escapement in local streams. Sampling the catch and determining the proportions of natural and hatchery origin adults using scale analysis was used to assess the interception of natural coho salmon in the commercial fishery. Samples and catch were collected for four separate catch areas during both seasons. However, estimates of natural and hatchery origin coho salmon could only be calculated for three of the four areas.