Population genetic structure and life history variability in Oncorhynchus nerka from the Snake River basin. Final report

摘要

The authors used protein electrophoresis to examine genetic relationships among samples of sockeye salmon and kokanee (Oncorhynchus nerka) from the Snake River basin. A few collections from elsewhere in the Pacific Northwest were also included to add perspective to the analysis. After combining temporal samples that did not differ statistically within and between years, 32 different populations were examined for variation at 64 gene loci scored in all populations. Thirty-five (55%) of these gene loci surveyed were polymorphic in at least one population. Average heterozygosities were relatively low (0.006-- 0.041), but genetic differentiation among populations was pronounced: the value of Wright's F(sub ST) of 0.244 is higher than has been reported in any other study of Pacific salmon.