Distribution of naturally recruited wild Japanese eels in Japan revealed by otolith stable isotopic ratios and document investigation

• YONETA AKIHITO

  Graduate School of Agricultural and Life Sciences, The University of Tokyo Atmosphere and Ocean Research Institute, The University of Tokyo

• ITAKURA HIKARU

  Graduate School of Science, Kobe University

• ARAI KOHMA

  Atmosphere and Ocean Research Institute, The University of Tokyo Graduate School of Frontier Sciences, The University of Tokyo

• KAIFU KENZO

  Faculty of Law, Chuo University

• YOSHINAGA TATSUKI

  School of Marine Biosciences, Kitasato University

• MIYAKE YOICHI

  Atmosphere and Ocean Research Institute, The University of Tokyo Graduate School of Frontier Sciences, The University of Tokyo

• SHIRAI KOTARO

  Atmosphere and Ocean Research Institute, The University of Tokyo

• KIMURA SHINGO

  Atmosphere and Ocean Research Institute, The University of Tokyo Graduate School of Frontier Sciences, The University of Tokyo

Bibliographic Information

Other Title

• 耳石安定同位体比分析と文献調査に基づく日本におけるニホンウナギの自然分布域
• ジセキ アンテイ ドウイタイヒ ブンセキ ト ブンケン チョウサ ニ モトズク ニホン ニ オケル ニホンウナギ ノ シゼン ブンプイキ

Abstract

　To clarify the natural distribution of Japanese eels in Japan, otolith oxygen and carbon stable isotope analyses were conducted by analyzing collections of data on Japanese eels in scientific archives. The stable isotope analyses can segregate naturally recruited eels from stocked eels. As a result, coastal regions of the whole area of Kyushu, the Seto Inland Sea, the Pacific side south of Aomori Prefecture, and the Sea of Japan side south of Kyoto Prefecture were identified as main areas of natural distribution, and coastal regions from Fukui Prefecture to Aomori Prefecture facing the Sea of Japan were identified as marginal areas of natural distribution. Even in the main area, some rates of naturally recruited eels were less than 30%, suggesting that the eel resources inhabiting Japanese rivers and lakes are dependent on stocked eels.

Journal

• NIPPON SUISAN GAKKAISHI

  NIPPON SUISAN GAKKAISHI 85 (2), 150-161, 2019-03-15

  The Japanese Society of Fisheries Science

Keywords

• 資源管理
• 耳石安定同位体比
• 天然加入個体
• ニホンウナギ
• 分布域
• 放流

Details

• CRID: 1390845713071422592
• NII Article ID: 130007622909
• NII Book ID: AN00193422
• DOI: 10.2331/suisan.18-00038
• ISSN: 1349998X
• ISSN: 00215392
• NDL BIB ID: 029617884
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I029617884
• Web Site: https://www.jstage.jst.go.jp/article/suisan/85/2/85_18-00038/_pdf
• Text Lang: ja
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed