Genetic variation in steelhead (Salmo gairdneri) from the north coast of Washington

Canadian Journal of Fisheries and Aquatic Sciences
By:  and 

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Abstract

Steelhead (Salmo gairdneri) collected from various sites in nine drainages in northwestern Washington were genetically characterized at 65 protein-coding loci by starch-gel electrophoresis. Genetic differentiation within and among drainages was not significant, and genetic variation among drainages was much less than that reported in British Columbia; these results may be the consequence of gene flow from hatchery stocks that have been released in Washington since the 1940's. Allele frequencies varied significantly among year-classes (hence, genetic characterization studies must include data from several year-classes), and also between hatchery fish (including a stock developed with local wild fish) and wild fish, indicating that few wild fish have been successfully and routinely included in hatchery brood stocks. Conservation of genetic diversity along the north coast of Washington should be facilitated by reducing the numbers of hatchery fish that spawn in streams and by including wild fish in hatchery brood stocks.

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Additional publication details

Publication type Article
Publication Subtype Journal Article
Title Genetic variation in steelhead (Salmo gairdneri) from the north coast of Washington
Series title Canadian Journal of Fisheries and Aquatic Sciences
DOI 10.1139/f89-010
Volume 46
Issue 1
Year Published 1989
Language English
Publisher Canadian Science Publishing
Contributing office(s) Western Fisheries Research Center
Description 8 p.
First page 66
Last page 73
Country United States
State Washington