The genetic population structure of lacustrine sockeye salmon, Oncorhynchus nerka, in Japan as the endangered species
{feed: pubDate}

Abstract Lacustrine sockeye salmon (Oncorhynchus nerka) are listed as an endangered species in Japan despite little genetic information on their population structure. In order to clarify the genetic diversity and structure of Japanese populations for evaluating on the bottleneck effect and an endangered species, we analyzed the ND5 region of mitochondrial DNA (mtDNA) and 45 single nucleotide polymorphisms (SNPs) in 640 lacustrine sockeye salmon in Japan and 80 anadromous sockeye salmon in Iliamna Lake of Alaska. The genetic diversity of the Japanese population in both mtDNA and SNPs was significantly less than that of the Iliamna Lake population. Moreover, all Japanese populations had SNP loci deviating from the HWE. In spite of low genetic diversity, the SNP analyses resulted that the Japanese population was significantly divided into three groups. These suggest that Japanese sockeye salmon populations should be protected as an endangered species and genetically disturbed by the hatchery program and transplantations.




  • Content Type Journal Article
  • Pages 1-12
  • DOI 10.1007/s10641-011-9876-1
  • Authors
    • Yuichiro Kogura, Graduate School of Fisheries Sciences, Hokkaido University, 3-1-1, Minato-cho, Hakodate, Hokkaido 041-8611, Japan
    • James E. Seeb, School of Aquatic and Fisheries Science, University of Washington, 1122 Boat ST NE, Seattle, WA 98146, USA
    • Noriko Azuma, Nodai Bioresources Institute, Tokyo University of Agriculture, 196, Yasaka, Abashiri, Hokkaido 099-2493, Japan
    • Hideaki Kudo, Faculty of Fisheries Sciences, Hokkaido University, 3-1-1, Minato-cho, Hakodate, Hokkaido 041-8611, Japan
    • Syuiti Abe, Faculty of Fisheries Sciences, Hokkaido University, 3-1-1, Minato-cho, Hakodate, Hokkaido 041-8611, Japan
    • Masahide Kaeriyama, Faculty of Fisheries Sciences, Hokkaido University, 3-1-1, Minato-cho, Hakodate, Hokkaido 041-8611, Japan





More...