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2013 Fiscal Year Final Research Report

Impacts of environmental variability on the growth and survival of larval sardine and anchovy in the Kuroshio and its extension

Research Project

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Project/Area Number 23310002
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Environmental dynamic analysis
Research InstitutionThe University of Tokyo

Principal Investigator

ITOH Sachihiko  東京大学, 大気海洋研究所, 准教授 (80345058)

Co-Investigator(Kenkyū-buntansha) KOMATSU Kosei  東京大学, 大学院・新領域創成科学研究科, 准教授 (30371834)
Co-Investigator(Renkei-kenkyūsha) YASUDA Ichiro  東京大学, 大気海洋研究所, 教授 (80270792)
WATANABE Yoshiro  東京大学, 大気海洋研究所, 教授 (90280958)
Project Period (FY) 2011-04-01 – 2014-03-31
Keywords生物海洋
Research Abstract

In order to clarify growth and survival processes of Japanese sardine and Japanese anchovy in areas around the Kuroshio and its extension, larval sampling, otolith microstructure analyses, observations of environmental condition, and numerical experiments were conducted. During the period from 2006 to 2012, larval density fluctuated interannually, reflecting the fluctuations of the abundances of whole stock level of each species. However, spatial distribution showed large variations that were related to the structure of the path of the Kuroshio. The results of particle tracking experiments suggested that short-term variations of the path of the Kuroshio drastically changed the transport and growth rates of larvae. While the growth rates showed positive correlation with temperature for both of the two species, there were significant differences when the samples were divided by years. Survival processes were suggested to be the important factors affecting these relationships.

  • Research Products

    (19 results)

All 2014 2013 2012 2011 Other

All Journal Article (7 results) (of which Peer Reviewed: 7 results) Presentation (9 results) Book (2 results) Remarks (1 results)

  • [Journal Article] Regeneration of a warm anticyclonic ring by cold water masses within the western subarctic gyre of the North pacific2014

    • Author(s)
      Sachihiko Itoh, 他(著者5名の筆頭)
    • Journal Title

      Journal of Oceanography

      Volume: 70巻 Pages: 211-223

    • DOI

      10.1007/s10872-014-0225-9

    • Peer Reviewed
  • [Journal Article] Transport and survival of Japanese sardine ( Sardinops melanostictus) eggs and larvae via particle-tracking experiments2013

    • Author(s)
      Haruka Nishikawa, 他(著者7名)
    • Journal Title

      Fisheries Oceanography

      Volume: 22巻 Pages: 509-522

    • DOI

      10.1111/fog.12041

    • Peer Reviewed
  • [Journal Article] Winter mixed layer depth and spring bloom along the Kuroshio front : implications for the Japanese sardine stock2013

    • Author(s)
      Haruka Nishikawa, 他
    • Journal Title

      Marine Ecology Progress Series

      Volume: 487巻 Pages: 217-229

    • DOI

      10.3354/meps10201

    • Peer Reviewed
  • [Journal Article] Observations of the structure of turbulent mixing across the Kuroshio2012

    • Author(s)
      Hitoshi Kaneko, Ichiro Yasuda, Kosei Komatsu and Sachihiko Itoh
    • Journal Title

      Geophysical Research Letters

      Volume: 39巻

    • DOI

      10.1029/2012GL052419

    • Peer Reviewed
  • [Journal Article] 海洋生態系に関わる親潮・黒潮海域の水塊と変動に関する研究2012

    • Author(s)
      伊藤 幸彦
    • Journal Title

      海の研究

      Volume: 21巻

    • URL

      http://kaiyo-gakkai.jp/jos/uminokenkyu/vol21/21-2/21-2-ito.pdf

    • Peer Reviewed
  • [Journal Article] Impact of winter-to-spring environmental variability along the Kuroshio jet on the recruitment of Japanese sardine ( Sardinops melanostictus)2011

    • Author(s)
      Haruka Nishikawa, Ichiro Yasuda and Sachihiko Itoh
    • Journal Title

      Fisheries Oceanography

      Pages: 570-582

    • DOI

      10.1111/j.1365-2419.2011.00603.x

    • Peer Reviewed
  • [Journal Article] Environmental variability and growth histories of larval Japanese sardine ( Sardinops melanostictus) and Japanese anchovy ( Engraulis japonicus) near the frontal area of the Kuroshio2011

    • Author(s)
      Sachihiko Itoh
    • Journal Title

      Fisheries Oceanography

      Volume: 20巻 Pages: 114-124

    • DOI

      10.1111/j.1365-2419.2011.00572.x

    • Peer Reviewed
  • [Presentation] 複合生態系モデリング : 現状と課題2013

    • Author(s)
      伊藤 幸彦
    • Organizer
      水産海洋学会シンポジウム
    • Place of Presentation
      京都大学
    • Year and Date
      2013-11-15
  • [Presentation] 気候変動と海洋生態系~風が吹くとイワシが増える?~2013

    • Author(s)
      伊藤 幸彦
    • Organizer
      第99回アジ・サバ・イワシ長期漁況予報会議
    • Place of Presentation
      長崎西彼農業共同組合会議室
    • Year and Date
      2013-10-22
  • [Presentation] 多項目観測漂流ブイで見られた遠州灘沖の急激な水塊変動2012

    • Author(s)
      小松 幸生
    • Organizer
      2012年度水産海洋学会研究発表大会
    • Place of Presentation
      伊藤国際学術研究センター
    • Year and Date
      2012-12-16
  • [Presentation] 春季の黒潮前線域における イワシ類仔魚分布・成長速度2012

    • Author(s)
      伊藤 幸彦
    • Organizer
      東京大学大気海洋研究所共同利用研究集会
    • Place of Presentation
      東京大学大気海洋研究所
    • Year and Date
      2012-12-14
  • [Presentation] Impacts of epipycnal and diapycnal nutrient-transport by the Kuroshio on the productivity in the adjacent epipelagic waters2012

    • Author(s)
      Kosei Komatsu et al.
    • Organizer
      PICES Annual Meeting
    • Place of Presentation
      広島国際会議場
    • Year and Date
      2012-10-19
  • [Presentation] Structure and variability of the Kuroshio Nutrient Stream2012

    • Author(s)
      Kosei Komatsu
    • Organizer
      ASLO Summer meeting
    • Place of Presentation
      コラボしが 21, 大津市
    • Year and Date
      2012-07-12
  • [Presentation] Mixed layer depth and chlorophyll- a concentration in winter2012

    • Author(s)
      Sachihiko Itoh et al.
    • Organizer
      ASLO Summer meeting
    • Place of Presentation
      コラボしが 21, 大津市
    • Year and Date
      2012-07-09
  • [Presentation] 春季の遠州灘~房総沖海域におけるイワシ類仔魚分布2011

    • Author(s)
      伊藤 幸彦
    • Organizer
      2011年度水産学会
    • Place of Presentation
      函館市公民会館
    • Year and Date
      2011-11-11
  • [Presentation] 海洋生態系に関わる親潮・黒潮海域の水塊と変動に関する研究2011

    • Author(s)
      伊藤 幸彦
    • Organizer
      2011年度日本海洋学会秋季大会
    • Place of Presentation
      九州大学筑紫キャンパス
    • Year and Date
      2011-09-28
  • [Book] 水産海洋学入門2014

    • Author(s)
      小松 幸生, 他
    • Total Pages
      116-123
    • Publisher
      講談社
  • [Book] 水産海洋学入門2014

    • Author(s)
      伊藤 幸彦, 他
    • Total Pages
      130-135
    • Publisher
      講談社
  • [Remarks] 第11回海のサイエンスカフェ講師(伊藤幸彦), 2013年3月23日, ヴァージンカフェ品川, 主催 : 日本海洋学会教育問題研究会

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Published: 2015-06-25  

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