Mitochondrial DNA variation and genetic population structure of chum salmon Oncorhynchus keta around the Pacific Rim

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A survey of mtDNA variation among populations of chum salmon Oncorhynchus keta around the Pacific Rim revealed four large population groups: Rim of the Sea of Japan, the Rim of the Okhotsk Sea and West Bering Sea, North-west Alaska and Gulf of Alaska. The observed population structure appears to reflect isolation by distance with limited gene flow between regions and larger amounts of gene flow between populations within these four regions.

Keywords: Oncorhynchus keta; gene flow; genetic differentiation; geographic structure; post-glacial colonization

Document Type: Research Article


Affiliations: 1: Genetics Section, National Salmon Resources Center, Sapporo 062-0922, Japan 2: School of Aquatic and Fisheries Sciences, University of Washington, Seattle, WA 98195, USA 3: Institute of Marine Biology, Far East Branch Russian Academy of Science, Vladivostok 690600, Russia 4: Kamchatka Research Institute of Fisheries and Oceanography, Petropavlovsk-Kamchatsky 683602, Russia 5: Auke Bay Laboratory, Alaska Fisheries Science Center, NOAA, Auke Bay, AK 99801-8626, U.S.A 6: Faculty of Marine Bioscience & Technology, Kangnung National University, Gangneung 210-702, Korea 7: Division of Biological Science, Graduate School of Sciences, Hokkaido University, Sapporo 060-0810, Japan

Publication date: October 1, 2008

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