title: Genetic variation and local differences in Pacific cod Gadus macrocephalus around Japan.
abstract: The population structure of the Pacific cod Gadus macrocephalus was examined using 15 microsatellite loci and mitochondrial DNA (ND2 region). In total, 274 individuals were sampled from 16 locations around Japan to estimate the level of genetic differentiation and effective population size (Ne). Pairwise FST, analysis of molecular variance and Bayesian clustering analysis suggested the presence of two genetically distinct groups in waters around Japan, with a higher Nevalue in the eastern group than in the western group. A possible factor that restricts gene flow between groups may be related to the water temperature differences in the south-western part of the Sea of Japan, where the Tsushima Warm Current flows around the area inhabited by the western group, which may limit migration between the west and east.
authors.affiliation: Department of Ecology and Evolutionary Biology, Graduate School of Life Sciences, Tohoku University, Sendai, Miyagi, 980-8578, Japan.
authors.forename: A
authors.initials: A
authors.lastname: Suda
authors.affiliation: Department of Ecology and Evolutionary Biology, Graduate School of Life Sciences, Tohoku University, Sendai, Miyagi, 980-8578, Japan.
authors.forename: N
authors.initials: N
authors.lastname: Nagata
authors.affiliation: Department of Biology, Tokyo Gakugei University, Koganei, Tokyo, 184-8501, Japan.
authors.forename: A
authors.initials: A
authors.lastname: Sato
authors.affiliation: Tohoku National Fisheries Research Institute, Japan Fisheries Research and Education Agency, Hachinohe Laboratory, Hachinohe, Aomori, 031-0841, Japan.
authors.forename: Y
authors.initials: Y
authors.lastname: Narimatsu
authors.affiliation: Department of Ecology and Evolutionary Biology, Graduate School of Life Sciences, Tohoku University, Sendai, Miyagi, 980-8578, Japan.
authors.forename: H H
authors.initials: HH
authors.lastname: Nadiatul
authors.affiliation: Department of Ecology and Evolutionary Biology, Graduate School of Life Sciences, Tohoku University, Sendai, Miyagi, 980-8578, Japan.
authors.forename: M
authors.initials: M
authors.lastname: Kawata
mesh_terms: D000818:Animals; D001499:Bayes Theorem; D004272:DNA, Mitochondrial / Q000235:genetics; D048388:Gadiformes / Q000235:genetics*; D014644:Genetic Variation; D005828:Genetics, Population; D007564:Japan; D018895:Microsatellite Repeats / Q000235:genetics; D010140:Pacific Ocean
chemical_list: D004272:DNA, Mitochondrial
keywords: Tsushima Warm Current; microsatellite; mitochondrial DNA; population structure