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Studies on interactions between marine copepods and bacteria

Research Project

Project/Area Number 16K07825
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Aquatic bioproduction science
Research InstitutionHiroshima University

Principal Investigator

Ohtsuka Susumu  広島大学, 生物圏科学研究科, 教授 (00176934)

Co-Investigator(Kenkyū-buntansha) 中井 敏博  広島大学, 生物圏科学研究科, 教授 (60164117)
浅川 学  広島大学, 生物圏科学研究科, 教授 (60243606)
高田 健太郎  北里大学, 海洋生命科学部, 准教授 (90455353)
福島 英登  日本大学, 生物資源科学部, 准教授 (60466307)
Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2018: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2017: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2016: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Keywordsカイアシ類 / バクテリア / キチン / キチナーゼ / 発光 / デトリタス / ウオジラミ / 発光バクテリア / 甲殻類 / テトロドトキシン / 光感覚器 / 発光細菌 / 浮遊性カイアシ類 / デトリタス食 / 共生
Outline of Final Research Achievements

Mesopelagic copepods such as Cephalophanes and Macandrewella belonging to Bradfordian families detect bioluminescent bacteria growing on crustacean detrital matters with the developed visual sensors, and are suggested to nutritionally utilize chitin by way of chitinolytic activity of bacteria. Food segregation was found in 4 mesopelagic detritivorous copepods based on a survey on their associated bacterial communities. Sea lice harbored epizootic bacteria which have an affinity for chitin and chitinolysis. Both planktonic and parasitic copepods have several isozymes of chitinase. In Cephalophanes, genes concerning chin-synthesis and chitinolysis were detected. Chin accumulated in the anterior caecum of the species may be a preserved food. The present study has revealed close interactions between copepods and bacteria via chitin.

Academic Significance and Societal Importance of the Research Achievements

バクテリアの発光能とキチン分解能がそれぞれ浮遊性カイアシ類の栄養摂取、栄養物消化に利用されている実態を明らかにした。デトリタス食性カイアシ類の資源分割の実態を、付随するバクテリア相を比較することで明らかにできた。カイアシ類の体表がキチン親和性を持つ、キチナーゼを有するバクテリアの生息場所と利用されていることを明らかにした。海洋生態系におけるキチンの栄養的重要性がバクテリアとカイアシ類の種間関係に関する研究を通して再認識された。

Report

(4 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • 2016 Research-status Report
  • Research Products

    (42 results)

All 2019 2018 2017 2016 Other

All Int'l Joint Research (13 results) Journal Article (12 results) (of which Int'l Joint Research: 10 results,  Peer Reviewed: 12 results,  Open Access: 12 results,  Acknowledgement Compliant: 1 results) Presentation (15 results) (of which Int'l Joint Research: 7 results,  Invited: 4 results) Book (1 results) Remarks (1 results)

  • [Int'l Joint Research] Burapha University(タイ)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] Mindanao State University(フィリピン)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] The Natural History Museum(英国)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] El Colegio de la Frontera Sur(メキシコ)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] California State University(米国)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research]

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] The Natural History Museum, London(United Kingdom)

    • Related Report
      2017 Research-status Report
  • [Int'l Joint Research] IMEDEA (CSIC-UIB)(Spain)

    • Related Report
      2017 Research-status Report
  • [Int'l Joint Research] El Colegio de la Frontera Sur(Mexico)

    • Related Report
      2017 Research-status Report
  • [Int'l Joint Research] California State University/San Francisco State University(米国)

    • Related Report
      2017 Research-status Report
  • [Int'l Joint Research] University Malaysia Sabah(Malaysia)

    • Related Report
      2017 Research-status Report
  • [Int'l Joint Research] The Natural History Museum(United Kingdom)

    • Related Report
      2016 Research-status Report
  • [Int'l Joint Research] Chonnan National University/Kyungpook National University(韓国)

    • Related Report
      2016 Research-status Report
  • [Journal Article] A new species of Acartia (Copepoda, Calanoida) from the Philippines, based on morphological and molecular analyses2019

    • Author(s)
      K. Srinui, S. Ohtsuka, E. B. Metillo, M. Nishibori
    • Journal Title

      ZooKeys

      Volume: 81 Pages: 71-94

    • DOI

      10.3897/zookeys.814.24601

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] A new species of Lagochondria (Crustacea: Copepoda) parasitic on callionymid Fish: first record of precopulatory mate guarding in fish-parasitic cyclopoid copepods, and of the occurrence of the genus in the North Pacific2019

    • Author(s)
      S. Ohtsuka, M. Nitta, T. Nakamura, Y. Maekawa
    • Journal Title

      Zoological Science

      Volume: 印刷中

    • NAID

      210000160759

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Toxicity and toxin composition of the great blue-ringed octopus Hapalochlaena lunulata from Ishigaki Island, Okinawa Prefecture, Japan2019

    • Author(s)
      M. Asakawa, T. Matsumoto, K. Umezaki, K. Kaneko, X. Yu, G. Gomez-Dalen, S. Tomano, T. Noguchi, S. Ohtsuka
    • Journal Title

      Toxins

      Volume: 2019,11,245 Issue: 5 Pages: 1-9

    • DOI

      10.3390/toxins11050245

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Possible origins of planktonic copepods, Pseudodiaptomus marinus (Crustacea: Copepoda: Calanoida), introduced from East Asia to the San Francisco Estuary based on a molecular analysis2018

    • Author(s)
      Ohtsuka, S., Shimono, T., Hanyuda, T., Shang, X., Huang, C., Soh, H.Y., Kimmerer, W., Kawai, H., Itoh, H., Ishimaru, T., Tomikawa, K.
    • Journal Title

      Aquatic Invasions

      Volume: 13 Issue: 2 Pages: 221-230

    • DOI

      10.3391/ai.2018.13.2.04

    • NAID

      120006491586

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] A new species of Peniculus (Copepoda: Siphonostomatoida) parasitizing mesopelagic myctophid fish: first discovery of colonization of the genus in deep water2018

    • Author(s)
      S. Ohtsuka, J. Nishikawa, G. A. Boxshall
    • Journal Title

      Parasite

      Volume: 25 Pages: 58-58

    • DOI

      10.1051/parasite/2018057

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Planktonic phases in symbiotic copepods: a review2018

    • Author(s)
      S. Ohtsuka, I. Madinabeitia, H. Yamashita, B. A. Venmathi Maran, E. Suarez-Morales, J.-s. Ho
    • Journal Title

      Bulletin of Southern California Academy of Sciences

      Volume: 117 Pages: 104-119

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Some observations of morphology and behavior of a hyperbenthic misophrioid copepod2018

    • Author(s)
      S. Ohtsuka, H. Tanaka, K. Hirano, Y. Kondo, D. Jaume, G. A. Boxshall
    • Journal Title

      Bulletin of Southern California Academy of Sciences

      Volume: 117 Pages: 127-137

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] 魚類の寄生性カイアシ類の表在生物:ユニークな付着基盤2018

    • Author(s)
      大塚攻・宮川千裕・平野勝士・近藤裕介
    • Journal Title

      タクサ

      Volume: 45 Pages: 48-60

    • NAID

      130007472902

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] A new genus and species of the family Pennellidae (Copepoda, Siphonostomatoida) infecting the Pacific viperfish Chauliodus macouni2018

    • Author(s)
      Ohtsuka Susumu、Lindsay Dhugal J.、Izawa Kunihiko
    • Journal Title

      Parasite

      Volume: 25 Pages: 1-10

    • DOI

      10.1051/parasite/2018003

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] A new species of hyperbenthic cyclopoid copepod from Japan: first record of the genus Cyclopicina in the Indo-Pacific region2016

    • Author(s)
      Ohtsuka S, Tanaka H, Boxshall GA
    • Journal Title

      Zoological Science

      Volume: 33 Issue: 6 Pages: 659-666

    • DOI

      10.2108/zs160094

    • NAID

      40021039943

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] New records of Caligidae (Copepoda, Siphonostomatoida) from the Philippines2016

    • Author(s)
      Venmathi Maran BA, Cruz-Lacierda ER, Ohtsuka S, Nagasawa K
    • Journal Title

      Zootaxa

      Volume: 4174 Issue: 1 Pages: 237-248

    • DOI

      10.11646/zootaxa.4174.1.16

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] On the occurrence of caligids (Copepoda: Siphonostomatoida) in the marine plankton: a review and checklist2016

    • Author(s)
      Venmathi Maran BA, Suarez-Morales E, Ohtsuka S, Soh HY, Hwang UW
    • Journal Title

      Zootaxa

      Volume: 4174 Issue: 1 Pages: 437-447

    • DOI

      10.11646/zootaxa.4174.1.27

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] プランクトン群集における寄生・共生の機能2019

    • Author(s)
      大塚攻
    • Organizer
      日本プランクトン学会春季シンポジウム
    • Related Report
      2018 Annual Research Report
    • Invited
  • [Presentation] Planktonic phases of symbiotic copepods, with a special reference to Caligidae2018

    • Author(s)
      S. Ohtsuka
    • Organizer
      International conference on agriculture, animal sciences, and food technology
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Can a deep-sea copepod tropically utilize bacterial bioluminescence and chitinolysis?2018

    • Author(s)
      K. Hirano, K. Takada, H. Fukushima, T. Nakai, T. Sambongi, S. Ohtsuka
    • Organizer
      PICES-2018 Annual meeting
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 海洋プランクトン群集における共生を栄養関係から考える2018

    • Author(s)
      大塚攻
    • Organizer
      日本共生生物学会第2回大会
    • Related Report
      2018 Annual Research Report
    • Invited
  • [Presentation] 寄生性カイアシ類の表在生物群集ーユニークな付着基盤ー2018

    • Author(s)
      大塚攻・宮川千裕・大川内浩子・平野勝士・近藤裕介
    • Organizer
      日本動物分類学会第54回大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Planktonic phases of symbiotic copepods2017

    • Author(s)
      Susumu Ohtsuka
    • Organizer
      13th International Conference on Copepoda
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Behavioral observations of an undescribed hyperbenthic misophrioid copepod, with supplementary data on DNA sequences2017

    • Author(s)
      Susumu Ohtsuka, Hayato Tanaka, Ysuke Kondo, Katsushi Hirano, Damia Jaume, Geoffrey A. Boxshall
    • Organizer
      13th International Conference on Copepoda
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Trophic interactions between bacteria and Bradfordian families2017

    • Author(s)
      Katsushi Hirano, Susumu Ohtsuka, Kentaro Takada, Hideto Fukushima, Toshihiro Nakai
    • Organizer
      13th International Conference on Copepoda
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Ecological studies on Panaietis yamagutii that infect the buccal cavity of horned turban, Turbo cornutus2017

    • Author(s)
      Hayato Uchiumi, Yusuke Kondo, Susumu Ohtsuka
    • Organizer
      13th International Conference on Copepoda
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Functional mophology of the cephalothoracic sucker of Caligus2017

    • Author(s)
      Taiki Fuji, Susumu Ohtsuka, Yusuke Kondo, Tomonori Kaji, Satoshi Tasumi
    • Organizer
      13th International Conference on Copepoda
    • Related Report
      2017 Research-status Report
  • [Presentation] デトリタス食性カイアシ類と海洋細菌との栄養学的関係2017

    • Author(s)
      平野勝士、大塚 攻、高田健太郎、福島英人、中井敏博、三本木至宏
    • Organizer
      特殊環境微生物セミナー2017
    • Related Report
      2017 Research-status Report
  • [Presentation] デトリタス食性カイアシ類と海洋細菌の栄養的関係2017

    • Author(s)
      平野勝士、高田健太郎、福島英人、中井敏博、三本木至宏、大塚 攻
    • Organizer
      日本動物学会中国四国支部広島県例会
    • Related Report
      2017 Research-status Report
  • [Presentation] Toxicity and toxin compositions of the greater blue-ringed ctopus Hapalochaena lunulata from Ishigaki Island, Okinawa Prefecture, Japan2017

    • Author(s)
      Manabu Asakawa, Miwako Fujii, Satoshi Tomano, Susumu Ohtsuka, Miyuki Yamauchi, Kohei Umesaki, Kyoichiro Ineko, Takuya Matsumoto
    • Organizer
      10th Global Summit on Toxicology and Applied Pharmacology
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] 沖縄県石垣島産ヒョウモンダコ属オオマルモンダコの毒性と毒成分の検討2016

    • Author(s)
      浅川 学・笘野哲史・山内望由季・松本拓也・大塚 攻
    • Organizer
      日本食品衛生学会
    • Place of Presentation
      函館市
    • Year and Date
      2016-10-27
    • Related Report
      2016 Research-status Report
  • [Presentation] アジアの沿岸に生息する浮遊性カイアシ類Acartia (Odontacartia) pacificの姉妹種の存在2016

    • Author(s)
      Khwanruan Srinui・大塚 攻
    • Organizer
      日本プランクトン学会・日本ベントス学会合同大会
    • Place of Presentation
      熊本市
    • Year and Date
      2016-09-08
    • Related Report
      2016 Research-status Report
  • [Book] Species diversity of animals in Japan(Chapter 22)2016

    • Author(s)
      Ohtsuka S, Nishida S
    • Total Pages
      721
    • Publisher
      Springer
    • Related Report
      2016 Research-status Report
  • [Remarks] 広島大学大学院生物圏科学研究科附属瀬戸内圏フィールド科学教育研究センター竹原ステーション

    • URL

      http://fishlab.hiroshima-u.ac.jp

    • Related Report
      2016 Research-status Report

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Published: 2016-04-21   Modified: 2022-02-21  

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