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Plasticity in life cycle, host-specificity and physiological features of caligidae

Research Project

Project/Area Number 19H03032
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 40030:Aquatic bioproduction science-related
Research InstitutionHiroshima University

Principal Investigator

Ohtsuka Susumu  広島大学, 瀬戸内CN国際共同研究センター, 教授 (00176934)

Co-Investigator(Kenkyū-buntansha) 荒川 修  長崎大学, 水産・環境科学総合研究科(水産), 教授 (40232037)
平山 真  広島大学, 統合生命科学研究科(生), 講師 (40535465)
田角 聡志  鹿児島大学, 農水産獣医学域水産学系, 准教授 (90359646)
近藤 裕介  広島大学, 統合生命科学研究科(生), 特任助教 (90848087)
浅川 学  広島大学, 統合生命科学研究科(生), 教授 (60243606)
Project Period (FY) 2019-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥17,420,000 (Direct Cost: ¥13,400,000、Indirect Cost: ¥4,020,000)
Fiscal Year 2023: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2022: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2021: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Fiscal Year 2020: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Fiscal Year 2019: ¥6,630,000 (Direct Cost: ¥5,100,000、Indirect Cost: ¥1,530,000)
Keywordsウオジラミ / 宿主特異性 / 吸盤 / 発生段階 / 生活史 / テトロドトキシン / TTX結合タンパク質 / イオンチャネル型受容体 / ノープリウス幼生 / ウキウオジラミ / コペポディド幼体 / 前額糸 / 種群 / TTX / 外来種 / ウオジラミ科 / 系統分類 / ヒジキムシ科 / 魚類寄生虫 / シロウオ / トラフグ属 / マダイ / テトロドトキシン(TTX) / クチクラ / カイアシ類 / トランスクリプトーム / RNA-seq / 成長段階 / 次世代シーケンサー
Outline of Research at the Start

ウオジラミ類は世界規模で様々な養殖魚類に甚大な被害を与える寄生虫だが、宿主特異性、生活史、生理機能については未解明な点が多い。宿主特異性に関与する分子メカニズムを明らかにすることが本研究の目的の1つである。生活史は可変性があり、中間宿主を持つもの、宿主転換を行うものが知られているが、各タイプの宿主を明らかにする。有毒トラフグ類に寄生するフグウオジラミは宿主に感染すると後天的にテトロドトキシンを体内に蓄積するが、その生理的意義や分子メカニズムを最先端技術を用いて解明する。さらに、ウオジラミ類が宿主へ付着する作用機序を明らかにする。

Outline of Final Research Achievements

The life cycle of caligids is highly variable: e.g., adults of Caligus undulatus detach themselves from the host in concert with its seasonal migration to cause habitat shift to plankton. The parasitism of C. sclerotinosus which was probably introduced from Oceania to Japan was clarified. Caligids adhere to the mucous surface of the host fish with the cephalothoracic sucker, in which energy caused by movements of legs is converted into negative pressure in the sucker via unique ultrastructures of the cuticular membranes. Caligus fugu feeds on TTX-bearing mucus of grass puffer to accummulate it in parts of the tissues. TTX can be excreted probably due to molting. TTX-binding proteins other than vitellogenin seem to be related to its accumulation. Transcriptome analyses of the infective copepodid I and other stages revealed that the former showed significantly higher gene expression of ionotropic receptors than the latter, implying that these are involved in the host-specificity.

Academic Significance and Societal Importance of the Research Achievements

ウオジラミ属成体のステレオタイプの形態が粘液で覆われた魚類の体表面に特化して進化したものであり、宿主への付着のメカニズムを機能形態学的、行動学的に世界で初めて詳細に明らかにした。成長段階数は分類群を通して一定であると推定されるが、生活史、特に成体の挙動、宿主特異性は極めて多様性を示すことが明らかになった。体内へTTXを蓄積する特殊な生理機能を持つセトウオジラミのTTX蓄積はビテロジェニン以外のTTX結合タンパク質によって起こり、幼体では排出されることも明らかにした。TTX毒性機序の解明の基礎知見となる。宿主特異性の分子メカニズムにはイオンチャネル型受容体が関与していることが示唆された。

Report

(6 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Annual Research Report
  • 2021 Annual Research Report
  • 2020 Annual Research Report
  • 2019 Annual Research Report
  • Research Products

    (64 results)

All 2024 2023 2022 2021 2020 2019 Other

All Int'l Joint Research (17 results) Journal Article (23 results) (of which Int'l Joint Research: 14 results,  Peer Reviewed: 21 results,  Open Access: 19 results) Presentation (22 results) (of which Int'l Joint Research: 11 results,  Invited: 2 results) Remarks (2 results)

  • [Int'l Joint Research] Regional Forensic Science Laboratory/University of Kerala(インド)

    • Related Report
      2023 Annual Research Report
  • [Int'l Joint Research] Universiti Sultan Zainal Abidin(マレーシア)

    • Related Report
      2023 Annual Research Report
  • [Int'l Joint Research] The Natural History Museum, London(英国)

    • Related Report
      2023 Annual Research Report
  • [Int'l Joint Research] University of Connecticut(米国)

    • Related Report
      2023 Annual Research Report
  • [Int'l Joint Research] The Natural History Museum(英国)

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] University of Szczecin(ポーランド)

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] University of Malaysia Sabah/Universiti Sultan Zainal Abidin(マレーシア)

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] University of Malaysia Sabah(マレーシア)

    • Related Report
      2021 Annual Research Report
  • [Int'l Joint Research] University of Kerala(インド)

    • Related Report
      2021 Annual Research Report
  • [Int'l Joint Research] The Natural History Museum(英国)

    • Related Report
      2021 Annual Research Report
  • [Int'l Joint Research] The Natural History Museum(英国)

    • Related Report
      2020 Annual Research Report
  • [Int'l Joint Research] University of Malaysia Sabah/Universiti Sultan Zainal Abidin(マレーシア)

    • Related Report
      2020 Annual Research Report
  • [Int'l Joint Research] El Colegio de la Frontera Sur(メキシコ)

    • Related Report
      2020 Annual Research Report
  • [Int'l Joint Research] University of Alberta(カナダ)

    • Related Report
      2020 Annual Research Report
  • [Int'l Joint Research] University of Szczecin(ポーランド)

    • Related Report
      2020 Annual Research Report
  • [Int'l Joint Research] Natural History Museum(英国)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] IMER(ベトナム)

    • Related Report
      2019 Annual Research Report
  • [Journal Article] A New Species and a New Genus of the Family Pennellidae (Copepoda: Siphonostomatoida) Parasitic on North Pacific Lightfish <i>Maurolicus japonicus</i> (Actinopterygii: Stomiiformes: Sternoptychidae) Collected from Suruga Bay, Japan2024

    • Author(s)
      Yumura N,, Nishikawa J, Ohtsuka S
    • Journal Title

      Species Diversity

      Volume: 29 Issue: 1 Pages: 81-90

    • DOI

      10.12782/specdiv.29.81

    • ISSN
      1342-1670, 2189-7301
    • Year and Date
      2024-02-29
    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Habitat shift of adult Caligus undulatus (Copepoda: Siphonostomatoida: Caligidae) from host fish to plankton in response to host behavior.2024

    • Author(s)
      Kondo Y, Ohtsuka S, Nawata M, Nishida Y, Komeda S, Iwasaki S, Aneesh PT, Venmathi Maran BA
    • Journal Title

      Diseases of Aquatic Organisms

      Volume: 157 Pages: 81-94

    • DOI

      10.3354/dao03773

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Two new genera and species of the parasitic copepod family Chondracanthidae Milen Edwards, 1840 (Copepoda: Cyclopoida) from deep-sea fishes off Surufa Bay, Japan2024

    • Author(s)
      Aneesh PT, Ohtsuka S, Kondo Y, Helna AK
    • Journal Title

      Acta Parasitologica

      Volume: (2024) Issue: 1 Pages: 1-15

    • DOI

      10.1007/s11686-024-00820-3

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] First record of Caligusdussumieri Rangnekar, 1957 (Copepoda, Siphonostomatoida, Caligidae) from Malaysia, with notes on caligids found from Malaysia and on host-specificity of caligids on lutjanid fishes2024

    • Author(s)
      Ismail N, Nishida Y, Ohtsuka S, Boxshall GA, ,Bernot JP
    • Journal Title

      Biodiversity Data Journal

      Volume: 12 e116598 Pages: 1-25

    • DOI

      10.3897/bdj.12.e116598

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Site-specific parasitism of crustaceans on the Black Pomfret, Parastromateus niger (Carangidae) from Indian waters2024

    • Author(s)
      Helna AK, Aneesh PT, Kumar AB, Ohtsuka S, Venmathi Maran BA
    • Journal Title

      Thalassas: An International Journal of Marine Sciences, 1-12.

      Volume: (2024) Issue: 2 Pages: 1-12

    • DOI

      10.1007/s41208-023-00655-1

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Are We Ready to Get Rid of the Terms “Chalimus” and ”Preadult” in the Caligid (Crustacea: Copepoda: Caligidae) Life Cycle Nomenclature?2023

    • Author(s)
      Wojciech Piasecki, Balu Alagar Venmathi Maran & Susumu Ohtsuka
    • Journal Title

      Pathogen

      Volume: 2023, 12, Issue: 3 Pages: 1-25

    • DOI

      10.3390/pathogens12030460

    • Related Report
      2023 Annual Research Report 2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Redescription and molecular characterization of Mothocya parvostis Bruce, 1986 (Crustacea: Isopoda: Cymothoidae) parasitic on Japanese halfbeak, Hyporhamphus sajori (Temminck & Schlegel, 1846)(Hemiramphidae) with Mothocya sajori Bruce, 1986 placed into synonymy.2023

    • Author(s)
      Fujita H, Aneesh PT, Kawai K, Kitamura S-I, Shimomura M, Umino T, Ohtsuka S
    • Journal Title

      Zootaxa

      Volume: 5277(2) Issue: 2 Pages: 259-286

    • DOI

      10.11646/zootaxa.5277.2.2

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Isolation and characterization of bacteria from the gut of a mesopelagic copepod Cephalophanes reflugens (Copepoda: Calanoida).2023

    • Author(s)
      Hirano K, Nakai T, Nagai T, Takada K, Fujii S, Sambongi Y, Kondo Y, Komeda S, Nakaguchi K, Yamaguchi S, Maekawa Y, Nakamura T, Oba Y, Ohtsuka, S.
    • Journal Title

      Journal of Plankton Research

      Volume: 46 Issue: 1 Pages: 48-58

    • DOI

      10.1093/plankt/fbad049

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Exploring evolutionary trends within the Pennellidae (Copepoda: Siphonostomatoida) using molecular data2022

    • Author(s)
      Nanami Yumura, Kenta Adachi, Masato Nitta, Yusuke Kondo, Sota Komeda, Kaori Wakabayashi, Jun Fukuchi , Geoffrey A. Boxshall & Susumu Ohtsuka
    • Journal Title

      Systematic Parasitology

      Volume: 99 Issue: 4 Pages: 477-489

    • DOI

      10.1007/s11230-022-10040-w

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Evidence of accumulation of tetrodotoxin (TTX) in tissues and body parts of ectoparasitic copepods via their feeding on mucus of TTX-bearing pufferfish2021

    • Author(s)
      Kodama Tomohisa、Ikeda Koichi、Arakawa Osamu、Kondo Yusuke、Asakawa Manabu、Kawatsu Kentaro、Ohtsuka Susumu
    • Journal Title

      Toxicon

      Volume: 204 Pages: 37-43

    • DOI

      10.1016/j.toxicon.2021.10.011

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] The cephalothoracic sucker of sea lice (Crustacea: Copepoda: Caligidae): The functional importance of cuticular membrane ultrastructure2021

    • Author(s)
      Ohtsuka S, Nishida Y, Hirano K, Fuji T, Kaji T, Kondo Y, Komeda S, Tasumi S, Koike K, Boxshall GA
    • Journal Title

      Arthropod Strcuture & Development

      Volume: 62 (2021) 101046 Pages: 1-24

    • DOI

      10.1016/j.asd.2021.101046

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] 水産食品の安全管理、魚介類を介した食中毒の現状と対策2021

    • Author(s)
      浅川 学
    • Journal Title

      瀬戸内海

      Volume: 81 Pages: 5-8

    • Related Report
      2020 Annual Research Report
  • [Journal Article] Redescription of the freshwater calanoid copepod <i>Neutrodiaptomus formosus</i> with key to females of diaptomid species in Japan2020

    • Author(s)
      Ueda H, Tomikawa K, Ohtsuka S
    • Journal Title

      Plankton and Benthos Research

      Volume: 15 Issue: 2 Pages: 178-184

    • DOI

      10.3800/pbr.15.178

    • NAID

      130007849627

    • ISSN
      1880-8247, 1882-627X
    • Year and Date
      2020-05-27
    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Discovery of the fish host of the ‘planktonic’ caligid Caligus undulatus Shen & Li, 1959 (Crustacea: Copepoda: Siphonostomatoida)2020

    • Author(s)
      Ohtsuka S, Nawata M, Nishida Y, Nitta M, Hirano K, Adachi K, Kondo Y, Venmathi Maran BA, Suarez-Morales E
    • Journal Title

      Biodiversity Data Journal

      Volume: 8: e52271 Pages: 1-10

    • DOI

      10.3897/bdj.8.e52271

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] A new species of Brachiella (Copepoda, Siphonostomatoida, Lernaeopodidae) from Peninsular Malaysia, with relegation of two genera Charopinopsis and Eobrachiella to junior synonyms of Brachiella2020

    • Author(s)
      Ohtsuka S, Piasecki W, Ismail N, Kamarudin S
    • Journal Title

      Parasite

      Volume: 27, 40 (2020) Pages: 1-12

    • DOI

      10.1051/parasite/2020038

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Evolutionary modification of pereopods in phronimid amphipods (Crustacea: Amphipoda: Hyperiidea: Phronimidae) reflects host differences2020

    • Author(s)
      Iinuma Y, Yamaguchi S, Kato M, Nakaaguchi K, Ohtsuka S, Wakabayashi K
    • Journal Title

      Biological Bulletin

      Volume: 238 Issue: 3 Pages: 167-179

    • DOI

      10.1086/709107

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] New genus and species of calanoid copepods (Crustacea) belonging to the group of Bradfordian families collected from the hyperbenthic layers off Japan2020

    • Author(s)
      Komeda S, Ohtsuka S
    • Journal Title

      ZooKeys

      Volume: 951 Pages: 21-35

    • DOI

      10.3897/zookeys.951.49990

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] 水域生態系が産み出す自然毒の脅威 フグの毒化と水域生態系2020

    • Author(s)
      荒川 修
    • Journal Title

      水環境学会誌

      Volume: 43(A) Pages: 354-358

    • Related Report
      2020 Annual Research Report
  • [Journal Article] Free amino-acid composition of a red algal species (Digenea simplex) containing neuroexcitotoxic kainic acid from Ishigaki Island, Okinawa Prefecture, Japan2020

    • Author(s)
      Asakawa M, Delan GM, Noguchi T, Ohtsuka S
    • Journal Title

      Toxicon

      Volume: 177 (supplement)

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] A new species of Paramacrochiron (Copepoda, Cyclopoida) parasitic on the rhizostome medusa Versuriga anadyoneme (Maas, 1903) collected from Vietnam2020

    • Author(s)
      Ohtsuka S, Ha TM , Thu PT
    • Journal Title

      Crustaceana

      Volume: 93 Pages: 111-123

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] 顎脚類(甲殻類)の分類と系統に関する研究の最近の動向2020

    • Author(s)
      大塚 攻・田中 隼人
    • Journal Title

      タクサ

      Volume: 48 Pages: 49-62

    • NAID

      130007808334

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Two new species of the genus Caligus (Crustacea, Copepoda, Siphonostomatoida) from the Sea of Japan, with a note on the establishment of a new species group2019

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

      ZooKeys

      Volume: 893 Pages: 91-113

    • DOI

      10.3897/zookeys.893.46923

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [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
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] ウオジラミ科(カイアシ類)の発生段階に関する用語 カリムス、プレアダルトの棄却の提案2023

    • Author(s)
      Piasecki W・Venmathi Maran BA・大塚 攻
    • Organizer
      日本動物分類学会 第58回大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Redescription and molecular characterization of Mothocya parvostis Bruce, 1986 (Crustacea: Isopoda: Cymothoidae) parasitic on Japanese halfbeak, Hyporhamphus sajori (Temminck & Schlegel, 1846) (Hemiramphidae) with Mothocya sajori Bruce, 1986 placed into synonymy2023

    • Author(s)
      Fujita H・Aneesh PT・Kawai K・Kitamura S・Shimomura M・Umino T・Ohtsuka S
    • Organizer
      日本動物分類学会 第58回大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] アカヒトデシダムシとルソンヒトデシダムシの遺伝距離2023

    • Author(s)
      吉本明香里・西田雄介・森滝丈也・齋藤暢宏・大塚 攻・若林香織
    • Organizer
      日本動物分類学会 第58回大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] ゴウジュウウオジラミ:外来種の可能性と発生段階、宿主特異性、 季節的消長2023

    • Author(s)
      大塚 攻・西田雄介・近藤 裕介・Aneesh PT・白樫 正・山下浩史
    • Organizer
      日本動物学会 第94回山形大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Caligus fuguにおけるTTX結合タンパク質の探索2023

    • Author(s)
      大下勇紀・佐藤楽生・ 大塚攻・田角聡志
    • Organizer
      日本水産学会春季大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] New discoveries on the development, life cycle and attachment mechanism of Caligus,2022

    • Author(s)
      Susumu Ohtsuka, Yusuke Nishida, Yusuke Kondo, Danny Tang D & Geoffrey A. Boxshall
    • Organizer
      e-International Conference on Copepoda
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Exploring evolutionary trends within the Pennelliidae (Copepoda: Siphonostomatoida) using molecular data2022

    • Author(s)
      Nanami Yumura, Kenta Adachi, Masato Nitta, Yusuke Kondo, Sota Komeda, Kaori Wakabayashi, Jun Fukuchi, Geoffrey A. Boxshall & Susumu Ohtsuka
    • Organizer
      e-International Conference on Copepoda
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Sesoanl fluctiations in the occurrence of two species of sea lice (Crustacea: Copepoda: Caligidae), Caligus sclerotinosus, and Lepeophtheirus selii on wild red sea bream Pagrus major in the Seto Inland Sea, Japan,2022

    • Author(s)
      Yusuke Nishida, Susumu Ohtsuka, Yusuke Kondo & Sadaharu Iwasaki
    • Organizer
      e-International Conference on Copepoda
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] An account on all copepodid stages of Paramacrochiron tridentatum Ohtsuka, Ha & Thu, 2020 (Copepoda; Cyclopoida: Macrochironidae) associated with the rhizostome jellyfish Versuriga anadyoneme with notes on its affinity to the lochomologd complex,2022

    • Author(s)
      Yusuke Kondo, Sota Komeda, Susumu Ohtsuka, Panakool Thamban Aneesh, Tran Manh Ha, Pham The Thu, Sho Toshino, Akane Iida & Jun Nishikawa
    • Organizer
      e-International Conference on Copepoda
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Global spread of aquatic parasites via aquaculture, aquarium and game fishing2022

    • Author(s)
      Ohtsuka Susumu
    • Organizer
      virtual International Conference on Marine Science and Aquaculture
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Parasitism of the non-indigenous sea louse Caligus sclerotinosus among wild and farmed red sea bream Pagrus major in the Seto Inland Sea, Japan2022

    • Author(s)
      Nishida Yusuke, Ohtsuka Susumu, Madinabeitia Ione, Kondo Yusuke, Adachi Kenta, Yamashita Hirofumi, Iwasaki Sadaharu, Shirakashi Sho, Ogawa Kazuo
    • Organizer
      virtual International Conference on Marine Science and Aquaculture
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] What could have happened to the evolution of the highly modified fish parasite Pennellidae: implication of evolutionary trends baed on molecular analysis2022

    • Author(s)
      Yumura Nanami, Adachi Kenta, Nitta Masato, Kondo Yusuke, Komeda Sota, Wakabayashi Kaori, Fukuchi Jun, Boxshall A Geoffrey, Ohtsuka Susumu
    • Organizer
      virtual International Conference on Marine Science and Aquaculture
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Hosts and seasonal occurrence of the planktonic sea-louse Caligus undulatus in Japanese waters2022

    • Author(s)
      Nawata Masaki, Ohtsuka Susumu, Kondoh Yusuke, Nishida Yusuke
    • Organizer
      virtual International Conference on Marine Science and Aquaculture
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Tropical fish parasitic crustaceans: parasitic adaptations and emerging paradigms in research2022

    • Author(s)
      Aneesh Panakkool Thamban, Helna Ameri Kottarathil, Bijukumar Appukuttannair, Venmathi Maran Balu Alagar, Ohtsuka Susumu
    • Organizer
      virtual International Conference on Marine Science and Aquaculture
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Taxonomic review of the copepod family Chondracanthidae Milne Edwards, 1840 (Copepoda: Poecilostomatoida) parasitizing the marine fishes from Indian waters2022

    • Author(s)
      Helna Ameri Kottarathil. Aneesh Panakkool Thamban, Bijukumar Appukuttannair, Venmathi Maran Balu Alagar, Ohtsuka Susumu
    • Organizer
      virtual International Conference on Marine Science and Aquaculture
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 瀬戸内海産シロウオ(ハゼ科)に寄生するウオジラミ類の未記載種の寄生状況2021

    • Author(s)
      大塚攻・西田雄介・Danny Tang
    • Organizer
      日本動物分類学会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 瀬戸内海産天然マダイ個体群で寄生が確認されたゴウシュウウオジラミの寄生状況、発生段階および生活史2021

    • Author(s)
      西田雄介・大塚攻・近藤裕介・足立賢太・山下浩史・岩崎貞治・白樫正・小川和夫
    • Organizer
      日本水産学会
    • Related Report
      2021 Annual Research Report
  • [Presentation] ウキウオジラミのプランクトンにおける季節的出現、宿主および生活2021

    • Author(s)
      縄田将己・大塚攻・西田雄介・近藤裕介・足立賢太・平野勝士・新田理人
    • Organizer
      日本水産学会
    • Related Report
      2021 Annual Research Report
  • [Presentation] ウオジラミの頭胸部吸盤のクチクラ膜の微細構造と機能2020

    • Author(s)
      大塚 攻・西田雄介・平野勝士・藤 太稀・梶 智就・近藤裕介・米田壮汰・田角聡志・小池香苗・GA Boxashall
    • Organizer
      日本動物学会
    • Related Report
      2020 Annual Research Report
  • [Presentation] フグウオジラミCaligus fuguの感染ステージに特異的に発現している遺伝子群の同定2020

    • Author(s)
      田角 聡志・園田 岳憲・山本 淳・大塚 攻
    • Organizer
      日本水産学会春季大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] ウオジラミは魚にどのように吸着するのか?:機能形態学的アプローチ2019

    • Author(s)
      藤 太稀・大塚 攻・平野 勝士・近藤 裕介・梶 智成・田角 聡志
    • Organizer
      日本動物分類学会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Free amino acid composition of a red algal species (Digenea simplex) containing neuroexcitotoxic kainic acid from Ishigaki Island, Okinawa, Prefecture, Japan2019

    • Author(s)
      Asakawa M, Gomez Delan G, Noguchi T, Ohtsuka S
    • Organizer
      20th World Congress of the International Society on Toxinology
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Remarks] 魚類の寄生虫(瀬戸内海の生き物)

    • URL

      https://fishlab.hiroshima-u.ac.jp/setouchi-ikimono/parasite/parasite.html

    • Related Report
      2023 Annual Research Report
  • [Remarks] 魚類の寄生虫

    • URL

      https://fishlab.hiroshima-u.ac.jp/setouchi-ikimono/parasite/parasite.html

    • Related Report
      2022 Annual Research Report 2021 Annual Research Report

URL: 

Published: 2019-04-18   Modified: 2025-01-30  

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