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2006 Fiscal Year Final Research Report Summary

Studies on diversity and origins of parasitic dinoflagellates.

Research Project

Project/Area Number 16370039
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Biodiversity/Systematics
Research InstitutionHokkaido University

Principal Investigator

HORIGUCHI Takeo  Hokkaido University, Faculty of Science, Associate Professor, 大学院理学研究院, 助教授 (20212201)

Co-Investigator(Kenkyū-buntansha) OHTSUKA Susumu  Hiroshima Univ., Grad.School of Biosphere Science, Professor, 大学院生物圏科学研究科, 教授 (00176934)
Project Period (FY) 2004 – 2006
Keywordsdinoflagellate / parasitism / Marine Alveolate Group / ultrastructure / molecular phylogeny / biodiversity / protist / environmental clone sequence
Research Abstract

Little studies on parasitic dinoflagellates have been undertaken in Japan. The aims of this research are, therefore, 1)to understand species diversity of parasitic dinoflagellates around the Japanese coastal waters and 2)to understand their origins and their phylogenetic affinities with other dinoflagellates based on molecular phylogenetic analyses. In summary, we were able to recognize 8 species of parasitic dinoflagellates from various localities of Japan, belonging to 5 genera. These include, Blastodinium, Oodinium, Amoebophrya, Syndinium and Duboscquella. We have investigated each species with the aid of light and transmission electron microscopes. Also we have analyzed SSU rDNA sequences of these species using single cell PCR technique. Our molecular trees suggested that Blastodinium and Oodinium had originated from typical dinoflagellates, while Amoebophrya and Syndiniuim belong to the clade named Marine Alveoalte Group II. The marine protist parasitizing tintinnid ciliate, Favella ehrenbergii was identified as Duboscquella aspida. We found that this organism was included in the clade named, Marine Alveolate Group I (MAG-I). The latter clade has been recognized as assemblage of only environmental clone sequences originated from picoplanktonic size fractions and no actual organisms belonging to this clade have been identified (Although parasites of radiolarians have been found to belong this clade recently, their morphology has not been investigated. Dolven et al. 2007). Our finding, therefore, is the first organismal identification of the member of this enigmatic clade. The facts that environmental clone sequences of MAG-I have been detected almost anywhere in the ocean and members of the MAG-I mainly consists of parasites of radiolarians or ciliates suggest that the oceanic environments are full of (motile cells of) these parasites. Our research suggested importance of parasitism in the marine ocean ecology.

  • Research Products

    (36 results)

All 2007 2006 2005 2004

All Journal Article (36 results)

  • [Journal Article] Symbionts of Plankters : their Diversity and Importance in Marine Ecosystem.2007

    • Author(s)
      S.Ohtsuka
    • Journal Title

      Proceedings of The third national conference on algae and plankton, Chulaloncorn University 21-23 March 2007 (印刷中)

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Species of the Parasitic Genus Duboscquella are Members of the Enigmatic Marine Alveolate Group I.2007

    • Author(s)
      A.Harada
    • Journal Title

      Protist (印刷中)

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] The phylogenetic position of an unusual Protoperidinium species, P. bipes (Peridiniales, Dinophyceae) based on small and large subunit ribosomal RNA gene sequences.2007

    • Author(s)
      A.Yamaguchi
    • Journal Title

      Phycologia 46・3

      Pages: 270-276

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Taxonomy, phylogeny, biogeography, and ecology of Sabulodinium undulatum (Dinophyceae), including an amended description of the species.2007

    • Author(s)
      M.Hoppenrath
    • Journal Title

      Phycological Research 55・2

      Pages: 159-175

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Symbionts of Plankters : their Diversity and Importance in Marine Ecosystem.2007

    • Author(s)
      S.Ohtsuka
    • Journal Title

      Proceedings of The third national conference on algae and plankton, Chulaloncorn University 21-23 March 2007 (in press)

      Pages: 21-23

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Species of the Parasitic Genus Duboscquella are Members of the Enigmatic Marine Alveolate Group I.2007

    • Author(s)
      A.Harada
    • Journal Title

      Protist (in press)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] The phylogenetic position of an unusual Protoperidinium species, P.bipes (Peridiniales, Dinophyceae) based on small and large subunit ribosomal RNA gene sequences.2007

    • Author(s)
      A.Yamaguchi
    • Journal Title

      Phycologia 46-3

      Pages: 270-276

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Taxonomy, phylogeny, biogeography, and ecology of Sabulodinium undulatum (Dinophyceae), including an amended description of the species.2007

    • Author(s)
      M.Hoppenrath
    • Journal Title

      Phycological Research 55-2

      Pages: 159-175

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Serial replacement of a diatom endosymbiont in the marine dinoflagellate, Peridinium quinquecorne (Peridiniales,Dinophyceae).2006

    • Author(s)
      T.Horiguchi
    • Journal Title

      Phycological Research 54・3

      Pages: 193-200

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Algae and their chloroplasts : with particular reference to dinoflagellates.2006

    • Author(s)
      T.Horiguchi
    • Journal Title

      Paleontological Research 54・4

      Pages: 299-309

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Acquiring scanning electron microscopical, light microscopical and multiple gene sequence data from a single dinoflagellate cell.2006

    • Author(s)
      Y.Takano
    • Journal Title

      Journal of Phycology 42・1

      Pages: 251-256

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] プランクトン学と寄生虫学の複合領域的研究の重要性.2006

    • Author(s)
      大塚 攻
    • Journal Title

      日本プランクトン学会報 53・1

      Pages: 7-13

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] アミ類の寄生生物に関する最近の研究.2006

    • Author(s)
      大塚 攻
    • Journal Title

      日本プランクトン学会報 53・1

      Pages: 37-44

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] 総説-日本沿岸の寄生性渦鞭毛藻類の分類学的研究の現状と課題。2006

    • Author(s)
      堀口健雄
    • Journal Title

      日本プランクトン学会報 53・1

      Pages: 21-29

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Serial replacement of a diatom endosymbiont in the marine dinoflagellate, Peridinium quinquecorne (Peridiniales, Dinophyceae).2006

    • Author(s)
      T.Horiguchi
    • Journal Title

      Phycological Research 54-3

      Pages: 193-200

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Algae and their chloroplasts : with particular reference to dinoflagellates.2006

    • Author(s)
      T.Horiguchi
    • Journal Title

      Paleontological Research 54-4

      Pages: 299-309

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Acquiring scanning electron microscopical, light microscopical and multiple gene sequence data from a single dinoflagellate cell.2006

    • Author(s)
      Y.Takano
    • Journal Title

      Journal of Phycology 42-1

      Pages: 251-256

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Importance of parasito-planktology for precise understanding the marine ecosystem. (in Japanese with English abstract)2006

    • Author(s)
      S.Ohtsuka
    • Journal Title

      Bulletin of the Plankton Society of Japan 53-1

      Pages: 7-13

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Recent advances in studies of parasites on mysid crustaceans.(in Japanese with English abstract)2006

    • Author(s)
      S.Ohtsuka
    • Journal Title

      Bulletin of the Plankton Society of Japan 53-1

      Pages: 37-44

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Heterocapsa psammophila sp. nov. (Peridiniales, Dinophyceae), a new sand-dwelling marine dinoflagellate.2005

    • Author(s)
      M.Tamura
    • Journal Title

      Phycological Research 53・4

      Pages: 303-311

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Pyramidodinium atrofuscum gen. et sp. nov., a new coccoid marine dinoflagellate from tropical waters.2005

    • Author(s)
      T.Horiguchi
    • Journal Title

      Phycological Research 53・4

      Pages: 247-254

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] A molecular phylogenetic study of the heterotrophic dinoflagellate genus, Protoperidinium (Peridiniales, Dinophyceae).2005

    • Author(s)
      A.Yamaguchi
    • Journal Title

      Phycological Research 53・1

      Pages: 38-50

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Galeidinium rugatum gen. et sp. nov. (Dinophyceae), a new coccoid dinoflagellate with a diatom endosymbiont.2005

    • Author(s)
      M.Tamura
    • Journal Title

      Journal of Phycology 41・3

      Pages: 658-671

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Taxonomic studies on parasitic dinoflagellates it Japan. (in Japanese with English abstract)2005

    • Author(s)
      T.Horiguchi
    • Journal Title

      Bulletin of the Plankton Society of Japan 53-1

      Pages: 21-29

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Heterocapsa psammophila sp.nov.(Peridiniales, Dinophyceae), a new sand-dwelling marine dinoflagellate.2005

    • Author(s)
      M.Tamura
    • Journal Title

      Phycological Research 53-4

      Pages: 303-311

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Pyramidodinium atrofuscum gen.et sp.nov., a new coccoid marine dinoflagellate from tropical waters.2005

    • Author(s)
      T.Horiguchi
    • Journal Title

      Phycological Research 53-4

      Pages: 247-254

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] A molecular phylogenetic study of the heterotrophic dinoflagellate genus, Protoperidinium (Peridiniales, Dinophyceae).2005

    • Author(s)
      A.Yamaguchi
    • Journal Title

      Phycological Research 53-1

      Pages: 38-50

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] バラスト水によるプランクトンの導入(総説)2004

    • Author(s)
      大塚攻
    • Journal Title

      日本プランクトン学会報 51・2

      Pages: 101-118

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] First record of an ectoparasitic dinoflagellate, Oodinium inlandicum (Dinophyta) infecting a chaetognath, Sagitta crassa from the Korean coasts.2004

    • Author(s)
      T.Horiguchi
    • Journal Title

      Algae 19・3

      Pages: 201-205

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] First Record of Occurrence of an ellobiosid Thalassomyces marsupii Kane on a New Host of Hyperiid Amphipod in Japanese Waters.2004

    • Author(s)
      S.Ohtsuka
    • Journal Title

      Plankton Biology and Ecology 51・2

      Pages: 110-112

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Morphology and host-specificity of the apostome ciliate Vampyrophrya pelagica infecting pelagi copepods in the Seto Inland Sea, Japan.2004

    • Author(s)
      S.Ohtsuka
    • Journal Title

      Marine Ecology Progress Series 282・1

      Pages: 129-142

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Galeidinium rugatum gen.et sp.nov. (Dinophyceae), a new coccoid dinoflagellate with a diatom endosymbiont.2004

    • Author(s)
      M.Tamura
    • Journal Title

      Journal of Phycology 41-3

      Pages: 658-671

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Plankton introduction via ship ballast water : A review. (in Japanese with English abstract)2004

    • Author(s)
      S.Ohtsuka
    • Journal Title

      Bulletin of the Plankton Society of Japan 51-2

      Pages: 101-118

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] First record of an ectoparasitic dinoflagellate, Oodinium inlandicum (Dinophyta) infecting a chaetognath, Sagitta crassa from the Korean coasts.2004

    • Author(s)
      T.Horiguchi
    • Journal Title

      Algae 19-3

      Pages: 201-205

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] First Record of Occurrence of an ellobiosid Thalassomyces marsupii Kane on a New Host of Hyperiid Amphipod in Japanese Waters.2004

    • Author(s)
      S.Ohtsuka
    • Journal Title

      Plankton Biology and Ecology 51-2

      Pages: 110-112

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Morphology and host-specificity of the apostome ciliate Vampyrophrya pelagica infecting pelagi copepods in the Seto Inland Sea, Japan.2004

    • Author(s)
      S.Ohtsuka
    • Journal Title

      Marine Ecology Progress Series 282-1

      Pages: 129-142

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 2008-05-27  

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