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STUDIES OF BIODIVERSITY ON PROTOZOAN ENDOSYMBIOTIC DIATOMS

Research Project

Project/Area Number 10836008
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field 自然史科学
Research InstitutionTokyo Gakugei University

Principal Investigator

MAYAMA Shigeki  TOKYO GAKUGEI UNIVERSITY, DEPARTMENT OF BIOLOGY ASSISTANT PROFESSOR, 教育学部, 助教授 (40199914)

Co-Investigator(Kenkyū-buntansha) NAGURO Tamotsu  THE NIPPON DENTAL UNIVERSITY, DEPARTMENT OF BIOLOGY ASSISTANT PROFESSOR, 歯学部, 助教授 (70120706)
TAKAHASHI Osamu  TOKYO GAKUGEI UNIVERSITY, DEPARTMENT OF GEOLOGY ASSISTANT, 教育学部, 助手 (20242232)
Project Period (FY) 1998 – 1999
Project Status Completed (Fiscal Year 1999)
Budget Amount *help
¥2,700,000 (Direct Cost: ¥2,700,000)
Fiscal Year 1999: ¥600,000 (Direct Cost: ¥600,000)
Fiscal Year 1998: ¥2,100,000 (Direct Cost: ¥2,100,000)
KeywordsEndosymbiont / radiolaria / forminifera / diatoms / biodiversity / Minutocellus / Pelagophyceae / marine plankton / Nannochloropsis
Research Abstract

Endosymbiotic diatoms were isolated from radiolarian and foraminiferan hosts and cultured. Diatoms identified were Nitzschia sp., Entomoneis sp. Nanofrustulum shiloi from benthic larger foraminifera, Sorites orbiculus, and Amphora roettgeri from planktonic foraminifera, Globigerina sp. Endosymbiotic diatom from Sphaerozoum fuscum was Minutocellus polymorphus and observed in detail with transmission and scanning electron microscopy. It was clarified in the analysis of 18S rDNA, that M. polymorphs formed monophyly with Cymatosira and Papilocellulus, which are morphological members of Cymatosiraceae, Symbiotic alga isolated from another Globigerina sp. was cultured and examined by TEM. It was coccoid Pelagophyceae and similar to Pelagococcus subviridis in cellural fien structure but to Pelagococcus calceolata in the analyses of 18S rDNA.
We explored transformation route of algae to radiolarian cell inside. Radiolarian species of Spumellaria and Nassellaria were studied regarding relative size to endosymbionts, presence or absence of the opening of radiolarian shell and the size of the opening. Moreover, the diversity of distom flora along the Japan Current flowing from tropical sea area was studied, since it is important for the source of symbionts. Shikine Island and Ryukyu Islands were chosen as study area an researches were performed over two years.

Report

(3 results)
  • 1999 Annual Research Report   Final Research Report Summary
  • 1998 Annual Research Report
  • Research Products

    (22 results)

All Other

All Publications (22 results)

  • [Publications] Wayama, S.: "Taxonomic revisions to the differentiating diatom grops for water quality evaluation and some comments for taxa with new designations"Diatom. 15. 1-9 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Takahashi, O, Kimura, M, Ishii, J. & Mayama, S.: "Upper Cretaceous diatoms from central Japan"14th diatom Symposium(S.Mayama et al. eds). 145-155 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Takahashi, O.: "Late Cretaceous (late Campanian-early Maastrichtian) rediolarian biogeography"Bulletin du Museum National D'Histoire naturelle, section C. 739-750 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Takahashi, O, & Matsukawa, M.: "Oceanward Shifting of Arc-Trench System at the Hauterivian (Early Cretaceous) in East Asia"Geosciences Jour. in press (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] 鈴木秀和、田中次郎、南雲保.: "伊豆諸島敷根島産の紅藻ユカリに着生する珪藻類"日本歯科大学紀要(一般教育系). 8. 147-160 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] 南雲保、真山茂樹: "沖縄県瀬底島沿岸の海産珪藻類"Diatom. 16. in press (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Mayama, S. et al.: "Isolation and identification of endosymbiotic diatoms from planktonic and benthic species of foraminifera"Diatom. 16(in press). (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Mayama, S.: "Taxonomic revisions to the differentiating diatom groups for water quality evaluation and some comments for taxa with new designations"Diatom. 15. 1-9 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Takahashi, O. et al.: "Upper Cretaceous diatoms from central Japan"14th Diatom Symposium (S. Mayama et al. Eds.). 145-155 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Takahashi, O.: "Late Cretaceous (late Campanian-early Maastrichtian) radiolarian biogeography"Bulletin du Museum national D'Histoire Maturelle, section C. 1999. 739-750 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Takahashi, O. & Matsukawa, M.: "Oceanward shifting of Arc-Trench system at the Hauterivian (Early Cretaceous) in East Asia"Geosciences Journ.. (in press). (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Suzuki, K. et al.: "Epiphytic diatoms on a red alga Plocamium telfairiae (Hooker et Harvey) Harvey in Shikine Island, the Izu Islands, Japan"Bullegin of the Nippon Dental University, General Education. No. 28. 147-160 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Naguro, T. & Mayama, S.: "Marine diatoms of Sesoko Isl., Okinawa Pref., Japan"Diatom. 16(in press). (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Mayama, S. Shokado: "Class Bacillariophyceae"In Diversity and Evolution of Algae(Chihara, M. ed.). 207-214 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Mayama,S.: "Taxonomic revisions to the differentiating diatom grops for water quality evaluation and some comments for taxa with new designations."Diatom. 15. 1-9 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] Takahashi O.,Kimura M.,Ishii J. & Mayama S.: "Upper Cretaceous diatoms from central Japan."14th Diatom Symposium (S.Mayama et al.eds). 145-155 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] Takahashi O.: "Late Cretaceous (late Campanian-early Maastrichtian) radiolarian biogeography"Bulletin du Museum National D'Histoire Naturelle,section C. 1999. 739-750 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] Takahashi O.& Matsukawa M.: "Oceanward Shifting of Arc-Trench System at the Hauterivian (Early Cretaceous) in East Asia."Geosciences Jour.. (in press). (2000)

    • Related Report
      1999 Annual Research Report
  • [Publications] 鈴木秀和,田中次郎,南雲保.: "伊豆諸島敷根島産の紅藻ユカリに着生する珪藻類"日本歯科大学紀要(一般教育系). 8. 147-160 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] 南雲保,真山茂樹: "珊瑚礁海の珪藻類"Diatom. 16(in press). (2000)

    • Related Report
      1999 Annual Research Report
  • [Publications] Mayama,S.& Kawashima,A.: "New combinations for some taxa of Naricula and Stauroneis,and an avowed substimte for a taxon of Ennotla." Diatom. 14. 69-71 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] 鈴木秀和・田中次郎・南雲保: "伊豆諸島式根島産の紅藻ユカリに着生する珪藻類" 日本歯科大学紀要(一般教育系). 28号. 147-160 (1999)

    • Related Report
      1998 Annual Research Report

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Published: 1998-04-01   Modified: 2016-04-21  

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