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Genetic variation and local differences in Pacific cod Gadus macrocephalus around Japan
Author(s) -
Suda A.,
Nagata N.,
Sato A.,
Narimatsu Y.,
Nadiatul H. H.,
Kawata M.
Publication year - 2017
Publication title -
journal of fish biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.672
H-Index - 115
eISSN - 1095-8649
pISSN - 0022-1112
DOI - 10.1111/jfb.13154
Subject(s) - gadus , biology , gene flow , population , analysis of molecular variance , genetic variation , microsatellite , fishery , ecology , zoology , fish <actinopterygii> , gene , genetics , demography , allele , sociology
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 ( N e ). Pairwise F ST , analysis of molecular variance and Bayesian clustering analysis suggested the presence of two genetically distinct groups in waters around Japan, with a higher N e value 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.