• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Effect of meso-scale oceanographic features on the larval growth and survival of small pelagic fishes in the Kuroshio-Oyashio transitional regions.

Research Project

Project/Area Number 09460085
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field General fisheries
Research InstitutionOcean Research Institute, The University of Tokyo

Principal Investigator

NAKATA Hideaki  Ocean Research Institute, University of Tokyo Associate Professor, 海洋研究所, 助教授 (60114584)

Co-Investigator(Kenkyū-buntansha) KASAI Akihide  Graduate School of Agriculture, Kyoto University Research Associate, 大学院・農学研究科, 助手 (80263127)
KIMURA Shingo  Ocean Research Institute, University of Tokyo Research Associate, 海洋研究所, 助手 (90202043)
Project Period (FY) 1997 – 1999
Project Status Completed (Fiscal Year 1999)
Budget Amount *help
¥8,800,000 (Direct Cost: ¥8,800,000)
Fiscal Year 1999: ¥2,600,000 (Direct Cost: ¥2,600,000)
Fiscal Year 1998: ¥2,900,000 (Direct Cost: ¥2,900,000)
Fiscal Year 1997: ¥3,300,000 (Direct Cost: ¥3,300,000)
Keywordsmeso-scale eddy / small pelagic fish / fish larvae / Kuroshio front / Kuroshio-Oyashio transitional regions / biological production / recruiment variation / larval survival
Research Abstract

In this study, we aimed to explore how and to what extent meso-scale oceanographic features affect larval growth and survival of small pelagic fishes such as anchovy in the Kuroshio and Kuroshio-Oyashio transitional regions, where major spawning and nursery habitats were located. For this purpose, focusing on the meso-scale eddies caused by frontal disturbances of the Kuroshio and Kuroshio Extension, we made intensive field surveys in addition to detailed analyses of existing data. Numerical bio-physical models for evaluating the effect of meso-scale eddies on the biological production in relation to larval growth/survival were also developed.
It has been revealed that warm water regions associated with the northward expansion of the Kuroshio water as seen in the northern edge of the Kuroshio front apparently play an important role in biological production and larval growth/survival of anchovy and other small pelagic fishes. In particular, meso-scale eddies caused by frontal disturbances in these regions contribute greatly to the enhancement of larval food production in addition to entraining and accumulating small-sized larvae into the edge of the eddies. On the other hand, larval growth is appreciably low in less productive Kuroshio water to the south and cold water associated with Oyashio water to the north. Therefore, possibility of the encounter of larvae with meso-scale eddies could determine the extent of larval survival in the offshore water.

Report

(4 results)
  • 1999 Annual Research Report   Final Research Report Summary
  • 1998 Annual Research Report
  • 1997 Annual Research Report
  • Research Products

    (25 results)

All Other

All Publications (25 results)

  • [Publications] Nakata, H.: "Implications of meso-scale eddies caused by frontal disturbances of the Kuroshio Current for anchovy recruitment"ICES J. Mar. Sci.. 57. (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Kimura, s.: "Biological production in meso-scale eddies caused by frontal disturbances of the Kuroghio Extension"ICES J. Mar. Sci.. 57. (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Kimura, s.: "Biological production process associated with frontal disturbances of the Kuroshio and Kuroshio Extension"Bull. Tohoku Natl. Fish. Res. Inst.. 62. (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Nakata, H.: "Physical and biological characteristics of the aggregation of anchovy eggs and larvae around the norhern edge of Kuroshio Extension."Proc. Of International Science Sympojium on Ecosystem Dynamics of the Kuroshio-Oyashio Transition Region. (in press). 221-230 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Kimura, s.: "A diagram for evaluating nutrient consumption and primary production in the Kuroshio and its Extension frontal eddies."Proc. Of International Science Sympojium on Ecosystem Dynamics of the Kuroshio-Oyashio Transition Region. (in press). 54-59 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Okazaki, Y.: "Biological production process associated with frontal disturbances of the Kuroshio and Kuroshio Extension"Proc. Of International Science Sympojium on Ecosystem Dynamics of the Kuroshio-Oyashio Transition Region. (in press). 231-237 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Nakata, H., S. Kimura, Y. Okazaki and A. Kasai: "Implications of meso-scale eddies caused by frontal disturbances in the Kuroshio Current for anchovy recruitment."ICES J. Mar. Sci.. 57 (in press). (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Kimura, S., H. Nakata, Y. Okazaki: "Biological Production in meso-scale eddies caused by frontal disturbances in the Kuroshio Extension."ICES J. Mar. Sci.. 57 (in press). (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Kimura, S., H. Nakata, Y. Okazaki and T. Sugimoto: "Biological production process associated with frontal disturbances of the Kuroshio and Kuroshio Extension."Bull. Tohoku Natl. Fish. Res. Inst.. 62 (in press). (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Nakata, H., Y. Okazaki, S. Kimura and T. Sugimoto: "Physical and biological characteristics of the aggregation of anchovy eggs and larvae around the northern edge of Kuroshio Extension."Proceedings of International Marine Science Symposium on Ecosystem Dynamics of the Kuroshio-Oyashio Transition Region, Mutsu and Hakodate, Aug. 1998. 221-230 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Okazaki, Y., H. Nakata and S. Kimura: "Spatial differences in abundance and food availability of anchovy larvae in the Kuroshio Extension region."Proceedings of International Marine Science Symposium on Ecosystem Dynamics of the Kuroshio-Oyashio Transition Region, Mutsu and Hakodate, Aug. 1998. 231-237 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Kimura, S., H. Nakata, Y. Okazaki and T. Sugimoto: "A diagram for evaluating nutrient consumption and primary production in the Kuroshio and its Extension frontal eddies."Proceedings of International Marine Science Symposium on Ecosystem Dynamics of the Kuroshio-Oyashio Transition Region, Mutsu and Hakodate, Aug. 1998. 54-59 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Nakata, H.: "Implication of meso-scale eddies caused by frontal disturbances of the Kuroshio Current for anchovy recruitment"ICES J. Mar. Sci. 57 (in press). (2000)

    • Related Report
      1999 Annual Research Report
  • [Publications] Kimura, S.: "Biological production in meso-scale eddies caused by frontal disturbances of the Kuroshio Extension"ICES J. Mar. Sci. 57 (in press). (2000)

    • Related Report
      1999 Annual Research Report
  • [Publications] Kimura, S.: "Biological production process associated with frontal disturbances of the Kuroshio and Kuroshio Extension"Bull. Tohoku Natl. Fish. Res. Inst.. 61 (in press). (2000)

    • Related Report
      1999 Annual Research Report
  • [Publications] 中田英昭: "黒潮続流フロント域における仔魚の分布と餌料生物生産の動態"月間海洋. 31. 206-210 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] Kimura,S.: "Biological production process associated with frontal disturbance of the Kuroshio and Kuroshio Extension." Bull.Tohoku Natl.Fish.Res.Inst.60(in press). (1999)

    • Related Report
      1998 Annual Research Report
  • [Publications] Nakata,H: "Physical and biological characteristics of the aggregation of anchovy eggs and larvae around the northern edge of Kuroshio Extension." Proc.of International Marine Science Sympojium on Ecosystem Dynamics of the Kuroshio-Oyashio Transition Region. 221-230 (1999)

    • Related Report
      1998 Annual Research Report
  • [Publications] Kimura,S.: "A diagram for evaluating nutrient consumption and primary production in the Kuroshio and its Extension frontal eddies." Proc.of International Marine Science Sympojium on Ecosystem Dynamics of the Kuroshio-Oyashio Transition Region. 54-59 (1999)

    • Related Report
      1998 Annual Research Report
  • [Publications] Okazaki,Y.: "Spatial differences in abundance and food availability of anchovy larvae in the Kuroshio Extension region." Proc.of International Marine Science Sympojium on Ecosystem Dynamics of the Kuroshio-Oyashio Transition Region. 231-237 (1999)

    • Related Report
      1998 Annual Research Report
  • [Publications] 中田英昭: "黒潮続流フロント域における仔魚の分布と餌料生物生産の動態." 月刊海洋. 31(印刷中). (1999)

    • Related Report
      1998 Annual Research Report
  • [Publications] 岡崎雄二: "黒潮続流縁辺域における仔稚魚とその餌生物の分布." 月刊海洋. 号外13. 154-158 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] S.Kimura: "Biological productivity of meso-scale eddies caused by frontal disterbances in the Kuroshio" ICES J.Mar.Sci.54. 179-192 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] A.Kasai: "The dependence of yearly recruitment of Japanese sardine Sardinops melanostictus on surviral in the Kuroshio-Oyashio Transition region" Fish,Sci.63・3. 372-377 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] 木村 伸吾: "黒潮フロント域における基礎生産過程" 海と空. 73・1. 9-14 (1997)

    • Related Report
      1997 Annual Research Report

URL: 

Published: 1997-04-01   Modified: 2016-04-21  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi