Determination of population structure and stock composition of chum salmon (Oncorhynchus keta) in Russia determined with microsatellites
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Date
2008
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Show full item recordAbstract
Variation at 14 microsatellite loci was examined in 34 chumsalmon (Oncorhynchus keta) populations from Russia and evaluated for its use in the determination of populationstructure and stock composition in simulated mixed-stock fishery samples. The genetic differentiation index (Fst) over all populations and loci was 0.017, and individual locus values ranged from 0.003 to 0.054. Regional population structure was observed, and populations from Primorye, Sakhalin Island, and northeast Russia were the most distinct. Microsatellite variation provided evidence of a more fine-scale population structure than those that had previously been demonstrated with other genetic-based markers. Analysis of simulated mixed-stock samples indicated that accurate and precise regional estimates of stock composition were produced when the microsatelliteswere used to estimate stock compositions. Microsatellites can be used to determine stock composition in geographically separate Russian coastal chum salmon fisheries and provide a greater resolution of stockcomposition and population structure than that previously provided with other techniques.Journal
Fishery BulletinVolume
106Issue/Article Nr
3Page Range
245-256Resource/Dataset Location
http://fishbull.noaa.gov/1063/beacham.pdfCollections