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

Studies on the mechanism for the formation of vegetative cell population of the toxic dinoflagellate Alexandrium tamarense (Dinophyceae)

Research Project

Project/Area Number 20K06181
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 40030:Aquatic bioproduction science-related
Research InstitutionMie University

Principal Investigator

Ishikawa Akira  三重大学, 生物資源学研究科, 教授 (00273350)

Co-Investigator(Kenkyū-buntansha) 松岡 數充  地方独立行政法人大阪市博物館機構(大阪市立美術館、大阪市立自然史博物館、大阪市立東洋陶磁美術館、大阪, 大阪市立自然史博物館, 外来研究員 (00047416)
Project Period (FY) 2020-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2023: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2022: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2021: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2020: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Keywords有毒渦鞭毛藻 / アレキサンドリウム・タマレンセ / シスト / 発芽 / 栄養細胞 / 個体群形成 / 伊勢湾
Outline of Research at the Start

アレキサンドリウム・タマレンセはアサリ等の二枚貝類を毒化させる有毒渦鞭毛藻である。従って、本種の個体群形成機構を解明することは、漁業被害を防止するためにも重要な課題である。そのために、本研究では、アレキサンドリウム・タマレンセが出現する伊勢湾内の松阪港を調査定点として、本種の休眠細胞であるシストの現場海底からの発芽を、本研究代表者が以前開発した器具を用いて季節的に実測し、またプランクトンとして遊泳している栄養細胞群集の季節消長を長期間にわたって追跡する。

Outline of Final Research Achievements

Temporal changes in the in situ germination flux of cysts and the abundance of vegetative cells of Alexandrium tamarense (present name, A. catenella) were investigated in Matsusaka Port, located in Ise Bay from January/February 2020 to July 2021. The in situ germination flux was measured using 'plankton Emergence Trap Chamber (PET Chamber)’.
The cysts germinated on the in situ sea bottom from winter to spring in 2020 and 2021, when the bottom sediment temperature was low. The vegetative cells built a population from winter to spring in the water column. From these results, it was concluded that cysts actually play an important role as seeds to form a vegetative population. Furthermore, based on the incubation experiments on cyst germination and vegetative growth in the laboratory, it was suggested that temperature is a crucial factor in controlling the population dynamics of A. tamarense.

Academic Significance and Societal Importance of the Research Achievements

アレキサンドリウム・タマレンセは、国内外において二枚貝類の毒化を引き起こす有毒渦鞭毛藻であるため、その個体群形成機構を解明することは水産学的に重要な課題である。本研究課題で取り組んだ研究手法により、栄養細胞群増殖のタネとなるシストの現場における発芽と栄養細胞の増殖において温度が大きく関わっていることを示し得た。このことは、各海域における本種の個体群形成機構を解明するために重要な基礎的知見となるものであり、また本種の増殖を予知する上でも大きく貢献するものである。

Report

(5 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (15 results)

All 2023 2022 2021 2020

All Journal Article (7 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 7 results,  Open Access: 5 results) Presentation (8 results) (of which Int'l Joint Research: 1 results)

  • [Journal Article] Morpho-molecular analysis of podolampadacean dinoflagellates (Dinophyceae), with the description of two new genera2023

    • Author(s)
      Mertens K.N., Carbonell-Moore M.C., Chomerat N., Bilien G., Boulben S., Guillou L., Romac S., Probert I. Ishikawa A., Nezan E.
    • Journal Title

      Phycologia

      Volume: 62 Issue: 2 Pages: 117-135

    • DOI

      10.1080/00318884.2022.2158281

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Population dynamics of <i>Chattonella</i> (Raphidophyceae), causative flagellates of noxious red tides in Ago Bay, central Japan, with an emphasis on cyst germination2022

    • Author(s)
      Ishikawa, A., Takei, Y., Ishii, K., Yamaguchi, M.
    • Journal Title

      Plankton and Benthos Research

      Volume: 17 Issue: 4 Pages: 383-392

    • DOI

      10.3800/pbr.17.383

    • ISSN
      1880-8247, 1882-627X
    • Year and Date
      2022-11-30
    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] "Life Cycle Strategies of the Centric Diatoms in a Shallow Embayment Revealed by the Plankton Emergence Trap/Chamber (PET Chamber) Experiments"2022

    • Author(s)
      Ken-Ichiro Ishii, Kazumi Matsuoka, Ichiro Imai and Akira Ishikawa
    • Journal Title

      Frontires in Marine Science

      Volume: 9 Pages: 889633-889633

    • DOI

      10.3389/fmars.2022.889633

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] 日本沿岸産イシガキダイのシガトキシン分析2022

    • Author(s)
      富川拓海, 國吉杏子, 伊藤史織, 佐久川さつき, 石川輝, 斎藤俊郎, 小島尚, 朝倉宏, 池原強, 大城直雅
    • Journal Title

      食品衛生学雑誌

      Volume: 63 Pages: 190-194

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Desert and anthropogenic mixing dust deposition influences microbial communities in surface waters of the western Pacific Ocean2021

    • Author(s)
      Maki Teruya、Lee Kevin C.、Pointing Stephen B.、Watanabe Koichi、Aoki Kazuma、Archer Stephen D.J.、Lacap-Bugler Donnabella C.、Ishikawa Akira
    • Journal Title

      Science of The Total Environment

      Volume: 791 Pages: 148026-148026

    • DOI

      10.1016/j.scitotenv.2021.148026

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] LC-MS/MS analysis of ciguatoxins revealing the regional and species distinction of fish in the tropical western Pacific2021

    • Author(s)
      Oshiro, N., Tomikawa, T., Kuniyoshi, K., Ishikawa, A., Toyofuku, H., Kojima, T., Asakura, H.
    • Journal Title

      Journal of Marine Science and Engineering

      Volume: 9 Issue: 3 Pages: 9030299-9030299

    • DOI

      10.3390/jmse9030299

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Molecular approach for analysis of in situ feeding by the dinoflagellate Noctiluca scintillans2020

    • Author(s)
      Goh Nishitani, Masaomi Shiromoto, Waka Sato-Okoshi, Akira Ishikawa
    • Journal Title

      Harmful Algae

      Volume: 99 Pages: 1-7

    • DOI

      10.1016/j.hal.2020.101928

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] A new sampling device to measure resuspension flux of dinoflagellate cysts from bottom sediments in coastal waters2023

    • Author(s)
      Ishikawa, A., Ogawa, K.
    • Organizer
      20th International Conference of Harmful Algae
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 海底からの再懸濁粒子捕捉装置の開発:植物プランクトンのシスト/休眠期細胞の 再懸濁フラックス測定を目指して2023

    • Author(s)
      石川 輝, 鯖瀬紘大, 小川清宏
    • Organizer
      2023年日本ベントス学会・日本プランクトン学会合同大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 三河湾におけるヘテロカプサ(Heterocapsa circularisquama)の越冬の可能性について2023

    • Author(s)
      湯口真実, 蒲原聡, 西谷豪, 坂本節子, 石川輝
    • Organizer
      令和5年度日本水産学会春季大会
    • Related Report
      2022 Research-status Report
  • [Presentation] Genetic analysis of the red tide dinoflagelalte, Noctiluca scintillans, from Jakarta Bay, Indnesia2021

    • Author(s)
      Muhammad Izzat Nugraha・石川 輝 ・大越和加・西谷 豪
    • Organizer
      日本プランクトン学会・日本ベントス学会合同大会
    • Related Report
      2021 Research-status Report
  • [Presentation] Phylogenetic analysis of red and green Noctiluca scintillans from Jakarta Bay, Indonesia2021

    • Author(s)
      Muhammad Izzat Nugraha・石川 輝・大越和加・西谷 豪
    • Organizer
      日本水産学会東北支部大会
    • Related Report
      2021 Research-status Report
  • [Presentation] ミトコンドリアDNAによるAurantiochytrium属の分類2021

    • Author(s)
      西谷 豪・竹ケ原彬教・大越和加・ 石川 輝
    • Organizer
      第6回ラビリンチュラシンポジウム
    • Related Report
      2021 Research-status Report
  • [Presentation] 赤潮原因種である海産渦鞭毛藻Noctiluca scintillansの日本・韓国沿岸域における遺伝的多様性2020

    • Author(s)
      城本将臣・Young-Ok Kim・北辻さほ・高坂祐樹・田中雅幸・山崎康裕・長副聡・山本圭吾・大越和加・石川輝・西谷豪
    • Organizer
      日本プランクトン学会・日本ベントス学会合同大会
    • Related Report
      2020 Research-status Report
  • [Presentation] 日本および韓国沿岸域における赤潮プランクトン夜光虫の遺伝的多様性に関する研究2020

    • Author(s)
      城本将臣・石川輝・Young-Ok Kim・北辻さほ・高坂祐樹・田中雅幸・山崎康裕・長副聡・山本圭吾・Muhammad Izzat Nugraha・大越和加・西谷豪
    • Organizer
      日本水産学会東北支部大会
    • Related Report
      2020 Research-status Report

URL: 

Published: 2020-04-28   Modified: 2025-01-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi