The genetic variability and population structure of the marbled rockfish Sebastiscus marmoratus in western Japan, as inferred by microsatellite DNA markers

  • Satoshi Tomano
  • Shota Yasuhara
  • Motohiro Takagi
  • Tetsuya UminoEmail author
Original Article Biology


Identification of the population structure of harvested species is the first step in the management of wild fisheries. Although the marbled rockfish Sebastiscus marmoratus is a commercially important species in Japan, information on the population structure of this species is limited. We analyzed 646 individuals of S. marmoratus from 13 sampling locations in the coastal waters of western Japan using seven microsatellite markers with the aim to examine the genetic population structure and establish baseline data on the genetic diversity and effective population size (Ne) of this species. Our results indicate that western Japan populations are characterized by a large Ne and that genetic diversity is higher than has been previously reported. We performed several population genetics analyses but these failed to provide evidence of appreciable genetic population structure, although low but significant genetic differentiation was found in 2.6% of the population pairs. This study provides baseline information on the genetic diversity and population structure of S. marmoratus in the coastal waters of western Japan.


Genetic diversity Microsatellites Population structure Sebastiscus marmoratus 



We are grateful to our colleagues who helped fish sampling, especially to Dr. Shingo Seki (Faculty of Agriculture and Marine Science, Kochi University) and Mr. Hiroyuki Hatanaka (Fukui Prefectural Fisheries Experimental Station), and the members of our laboratory. We also thank Dr. Eric Caldera (Smithsonian Institution, Washington D.C., USA) for reading the manuscript. We also thank the editor Dr. Masashi Sekino and two anonymous reviewers for reading the manuscript and providing critical comments.


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Copyright information

© Japanese Society of Fisheries Science 2019

Authors and Affiliations

  • Satoshi Tomano
    • 1
  • Shota Yasuhara
    • 1
  • Motohiro Takagi
    • 2
  • Tetsuya Umino
    • 1
    Email author
  1. 1.Graduate School of Integrated Sciences for LifeHiroshima UniversityHigashi-HiroshimaJapan
  2. 2.South Ehime Fisheries Research CenterEhime UniversityAinanJapan

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