Population structure and stock identification of sockeye salmon (Oncorhynchus nerka) in coastal lakes in British Columbia, Canada

被引：17

作者：

Beacham, TD ^{[1
]}

McIntosh, B ^{[1
]}

MacConnachie, C ^{[1
]}

机构：

[1] Fisheries & Oceans Canada, Pacific Biol Stn, Nanaimo, BC V9T 6N7, Canada

来源：

CANADIAN JOURNAL OF ZOOLOGY | 2005年 / 83卷 / 06期

关键词：

D O I：

10.1139/Z05-066

中图分类号：

Q95 [动物学];

学科分类号：

071002 ;

摘要：

Population structure of sockeye salmon, Oncorhynchus nerka (Walbaum, 1792), from coastal lakes in British Columbia was determined from a survey of variation of 14 microsatellite loci, with approximately 6400 sockeye salmon analyzed from 40 populations. Populations from the Queen Charlotte Islands displayed fewer alleles per locus than did populations in other regions. Genetic differentiation among the populations surveyed was observed, with the mean F-ST for all loci being 0.077 (SD = 0.006). Differentiation among populations was approximately 13 times greater than annual variation within populations. Regional structuring of the populations surveyed was observed. The accuracy and precision of the estimated stock compositions generally increased as the number of observed alleles at the loci increased. Simulated mixed-stock samples generated from observed population frequencies in different regions suggested that variation at microsatellite loci provided reasonably accurate and precise estimates of stock composition for potential samples from marine or freshwater fisheries.

引用

页码：834 / 844

页数：11

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