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Study on physiology and ecology of Gambierdiscus occurred in deep water (> 10 m depth) in order to clarify a mechanism of ciguatera outbreaks in Japan

Research Project

Project/Area Number 15H04535
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Aquatic bioproduction science
Research InstitutionKochi University

Principal Investigator

Adachi Masao  高知大学, 教育研究部自然科学系農学部門, 教授 (70274363)

Co-Investigator(Kenkyū-buntansha) 大西 浩平  高知大学, 教育研究部総合科学系生命環境医学部門, 教授 (50211800)
Research Collaborator Tanaka Koki  
Yanagida Ippei  
Project Period (FY) 2015-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥16,510,000 (Direct Cost: ¥12,700,000、Indirect Cost: ¥3,810,000)
Fiscal Year 2018: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2017: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2016: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2015: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Keywordsシガテラ / 有毒渦鞭毛藻 / 地球温暖化 / Gambierdiscus / 有害・有毒藻 / 赤潮
Outline of Final Research Achievements

Toxic dinoflagellates genus Gambierdiscus are the causative agents of ciguatera fish poisoning. It has been analyzed that occurrences and cell densities of Gambierdiscus species in shallow waters of Japanese coastal areas. However, those in deeper waters has not been analyzed yet. This study assessed the occurrences in the deeper waters (> 10 m depth). A strain of Gambierdiscus was isolated from a deep water (30 m depth). The strain was identified as G. silvae based on the morphological features as well as the phylogenetic position. The strain showed mouse toxicities. The optimal temperature, salinity, and light intensity for G. silvae was 25°C, 30 PSU, and 115 micromol photons/m2/s. It was clarified that the species distributed from shallow waters to deep waters in the areas by using qPCR assay. Finally, using meta-analysis based on 18S rDNA V8/V9 sequences, Gambierdiscus species including G. silvae as well as a novel clade/species were found in the Japanese coastal areas.

Academic Significance and Societal Importance of the Research Achievements

本研究では、これまで未検討であった本邦沿岸における水深10~30 m層に存在するシガテラ原因藻Gambierdiscus属に注目し、太平洋からは初報告となるGambierdiscus silvaeを見出した。さらに、本種の生理・生態を解明し、本種が本邦におけるシガテラ発生に深く関与している可能性を指摘した。また、本研究では次世代シーケンサーを活用することにより、本邦沿岸域にて発生するGambierdiscus属の群集組成を網羅的に明らかにすることに成功し、これまでに報告の無い新奇種を見出した。本研究により得られた結果は、沿岸魚類の毒化予察やシガテラへの対策法の策定にも役立つものと期待される。

Report

(5 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Annual Research Report
  • 2016 Annual Research Report
  • 2015 Annual Research Report
  • Research Products

    (20 results)

All 2018 2017 2016 2015

All Journal Article (6 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 6 results,  Open Access: 1 results,  Acknowledgement Compliant: 1 results) Presentation (13 results) (of which Int'l Joint Research: 4 results) Book (1 results)

  • [Journal Article] Abundance and seasonal population dynamics of the potentially ciguatera-causing dinoflagellate <i>Gambierdiscus</i> in Japanese coastal areas between 2007 and 20132018

    • Author(s)
      Tomohiro Nishimura, Wittaya Tawong, Hiroshi Sakanari, Takuji Ikegami, Keita Uehara, Daiki Inokuchi, Masatoshi Nakamura, Takuya Yoshioka, Shota Abe, Haruo Yamaguchi, Masao Adachi
    • Journal Title

      Plankton and Benthos Research

      Volume: 13 Issue: 2 Pages: 46-58

    • DOI

      10.3800/pbr.13.46

    • NAID

      130006744036

    • ISSN
      1880-8247, 1882-627X
    • Year and Date
      2018-05-30
    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] LSU rDNA based RFLP assays for the routine identification of Gambierdiscus species2017

    • Author(s)
      Lyu Yihua、Richlen Mindy L.、Sehein Taylor R.、Chinain Mireille、Adachi Masao、Nishimura Tomohiro、Xu Yixiao、Parsons Michael L.、Smith Tyler B.、Zheng Tianling、Anderson Donald M.
    • Journal Title

      Harmful Algae

      Volume: 66 Pages: 20-28

    • DOI

      10.1016/j.hal.2017.04.009

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Toxicity screening of 13 Gambierdiscus strains using neuro-2a and erythrocyte lysis bioassays2017

    • Author(s)
      Pisapia Francesco、Holland William C.、Hardison D. Ransom、Litaker R. Wayne、Fraga Santiago、Nishimura Tomohiro、Adachi Masao、Nguyen-Ngoc Lam、S?chet V?ronique、Amzil Zouher、Herrenknecht Christine、Hess Philipp
    • Journal Title

      Harmful Algae

      Volume: 63 Pages: 173-183

    • DOI

      10.1016/j.hal.2017.02.005

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Quantitativwe PCR assay for detection and enumeration of ciguatera-causing dinoflagellate Gambierdiscus spp. (Gonyaulacales) in coastal areas of Japan2016

    • Author(s)
      T. Nishimura, N. Hariganeya, W. Tawong, H. Sakanari, H. Yamaguchi, and M. Adachi
    • Journal Title

      Harmful Algae

      Volume: 52 Pages: 11-22

    • DOI

      10.1016/j.hal.2015.11.018

    • Related Report
      2016 Annual Research Report 2015 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] The effects of light intensity on the growth of Japanese Gambierdiscus spp. (Dinophyceae)2016

    • Author(s)
      Yoshimatsu Takamichi、Tie Chaoyu、Yamaguchi Haruo、Funaki Hiroshi、Honma Chiho、Tanaka Kouki、Adachi Masao
    • Journal Title

      Harmful Algae

      Volume: 60 Pages: 107-115

    • DOI

      10.1016/j.hal.2016.10.009

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Temperature and salinity effects and toxicity of Gambierdiscus caribaeus (Dinophyceae) from Thailand2016

    • Author(s)
      W. Tawong, T. Yoshimatsu, H. Yamaguchi, and M. Adachi
    • Journal Title

      Phycologia

      Volume: 55 Issue: 3 Pages: 274-278

    • DOI

      10.2216/15-111.1

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed
  • [Presentation] The first report of occurrence of Gambierdiscus silvae in the coastal areas of Japan.2018

    • Author(s)
      Hiroshi Funaki, Shouta Yoshii, Yuta Tanii, Kana Hashimoto, Tomohiro Nishimura, Kouki Tanaka, Ippei Yanagida, Haruo Yamaguchi, Masao Adachi
    • Organizer
      The 18th International Conference on Harmful Algae
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Vertical and horizontal species composition of ciguatera-causing dinoflagellate Gambierdiscus spp. (Gonyaulacales) in southern coastal areas of Japan.2017

    • Author(s)
      Hiroshi Funaki, Shouta Yoshii, Yuta Tanii, Kana Hashimoto, Tomohiro Nishimura, Kouki Tanaka, Ippei Yanagida, Haruo Yamaguchi, Masao Adachi
    • Organizer
      The Japanese Society of Fisheries Science 85th Anniversary-Commemorative International Symposium
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Gambierdiscus属新奇種に特異的な定量PCR法の開発ならびに本邦沿岸域におけるその発生状況の検討.2017

    • Author(s)
      谷井勇太・三村克哉・橋本佳奈・舩木紘・西村朋紘・田中幸記・柳田一平・山口晴生・足立真佐雄
    • Organizer
      平成29年度日本水産学会中国・四国支部例会
    • Related Report
      2017 Annual Research Report
  • [Presentation] Gambierdiscus species composition at deep sites (15-30 m depths) in Japanese coastal waters and the effect of irradiance on the growth of a dominant species at the sites2017

    • Author(s)
      Masao Adachi, Takuya Yoshioka, Shota Yoshii, Natsuki Kimoto, Tomohiro Nishimura, Hiroshi Funaki, Chiho Honma, Kouki Tanaka, Ippei Yanagida, Haruo Yamaguchi
    • Organizer
      10th EASTHAB Symposium
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] シガテラ原因藻Gambierdiscus silvaeの本邦沿岸域からの初報告.2017

    • Author(s)
      舩木紘・吉岡拓也・吉井将太・西村朋宏・柳田一平・山口晴生・足立真佐雄
    • Organizer
      平成30年度日本水産学会春季大会
    • Related Report
      2017 Annual Research Report
  • [Presentation] 定量PCR法による有光層中部におけるシガテラ原因藻Gambierdiscus属の種組成の検討2016

    • Author(s)
      吉井将太・西村朋宏・有光慎吾・齋藤一貴・舩木紘・本間千穂・山口晴生・柳田一平・田中幸記・足立真佐雄
    • Organizer
      平成28年度日本水産学会春季大会
    • Place of Presentation
      東京海洋大学
    • Year and Date
      2016-03-27
    • Related Report
      2015 Annual Research Report
  • [Presentation] Gambierdiscus species composition at sites deeper than 15 m in Japanese coastal waters and the evaluation of the effect of irradiance on the growth of a dominant species at the sites.2016

    • Author(s)
      Masao Adachi, Takuya Yoshioka, Shota Yoshii, Natsuki Kimoto, Tomohiro Nishimura, Hiroshi Funaki, Shingo Arimitsu, Kazuki Saito, Chiho Honma, Kouki Tanaka, Ippei Yanagida, Haruo Yamaguchi
    • Organizer
      The 17th International Conference on Harmful Algae
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 定量PCR法による南日本海域におけるシガテラ原因藻Gambierdiscus属の水平・鉛直分布の解明2016

    • Author(s)
      舩木紘・吉井将太・西村朋宏・田中幸記・柳田一平・山口晴生・三浦収・足立真佐雄
    • Organizer
      平成28年度日本水産学会秋季大会
    • Related Report
      2016 Annual Research Report
  • [Presentation] 本邦沿岸域の表層にて発生するGambierdiscus属有億2種の高光強度条件下における増殖応答2016

    • Author(s)
      舩木紘・木本菜月・吉松孝倫・田中幸記・柳田一平・山口晴生・足立真佐雄.
    • Organizer
      平成29年度日本水産学会春季大会
    • Related Report
      2016 Annual Research Report
  • [Presentation] 次世代シーケンサーを用いた水深30mにおける底生性有毒渦鞭毛藻の群集組成の解明2015

    • Author(s)
      阿部翔太・吉井将太・舩木紘・有光慎吾・西村朋宏・田中幸記・山口晴生・足立真佐雄
    • Organizer
      平成27年度日本水産学会中国・四国支部例会
    • Place of Presentation
      香川大学農学部
    • Year and Date
      2015-10-24
    • Related Report
      2015 Annual Research Report
  • [Presentation] 本邦産付着性有毒渦鞭毛藻Prorocentrum属に関する研究 南日本沿岸域における本属藻の分子系統および分布2015

    • Author(s)
      西村朋宏・阿部翔太・有光慎吾・Wittaya Tawong・田中幸記・平岡雅規・山口晴生・鈴木敏之・足立真佐雄
    • Organizer
      平成27年度日本水産学会秋季大会
    • Place of Presentation
      東北大学農学部
    • Year and Date
      2015-09-22
    • Related Report
      2015 Annual Research Report
  • [Presentation] 水深30mより分離したGambierdiscus cf. silvaeの増殖に及ぼす光強度の影響2015

    • Author(s)
      木本菜月・吉松孝倫・吉岡拓也・山口晴生・柳田一平・足立真佐雄
    • Organizer
      平成27年度日本水産学会秋季大会
    • Place of Presentation
      東北大学農学部
    • Year and Date
      2015-09-22
    • Related Report
      2015 Annual Research Report
  • [Presentation] 南日本沿岸域に発生する渦鞭毛藻Amphidinium属の分子系統と分布2015

    • Author(s)
      有光慎吾・西村朋宏・田中幸記・平岡雅規・柳田一平・山口晴生・足立真佐雄
    • Organizer
      平成27年度日本水産学会秋季大会
    • Place of Presentation
      東北大学農学部
    • Year and Date
      2015-09-22
    • Related Report
      2015 Annual Research Report
  • [Book] 有害有毒プランクトンの科学2016

    • Author(s)
      青木一弘・浅見大樹・足立真佐雄・荒功一・有元太朗・石井健一郎・石川輝・石田直也・板倉茂・今井一郎・小田達也・鬼塚剛・折田和三・神山孝史・小池一彦・高坂祐樹・坂本節子・櫻田清成・山口晴生・山口峰生
    • Total Pages
      340
    • Publisher
      恒星社厚生閣
    • Related Report
      2015 Annual Research Report

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Published: 2015-04-16   Modified: 2020-03-30  

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