2011 Fiscal Year Final Research Report
Ecological roles of Xenophyophorean foraminifera in the deep-sea biological communities and early evolution of foraminifera
| Project/Area Number |
21540489
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Stratigraphy/Paleontology
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| Research Institution | Japan Agency for Marine-Earth Science and Technology |
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Principal Investigator |
TSUCHIYA Masashi 独立行政法人海洋研究開発機構, 海洋・極限環境生物圏領域, チームリーダー (00435835)
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| Co-Investigator(Renkei-kenkyūsha) |
TOYOFUKU Takashi 独立行政法人海洋研究開発機構, 海洋・極限環境生物圏領域, チームリーダー (30371719)
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| Research Collaborator |
NOMAKI Hidetaka 独立行政法人海洋研究開発機構, 海洋・極限環境生物圏領域, 研究員 (90435834)
CHIKARAISHI Yoshito 独立行政法人海洋研究開発機構, 海洋・極限環境生物圏領域, 主任研究員 (50455490)
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| Project Period (FY) |
2009 – 2011
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| Keywords | ゼノフィオフォア / 底生有孔虫 / 深海底層生態系における役割 / 安定同位体生態学 / 単細胞真核生物 / ステルコマータ / 種多様性 / 進化 |
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| Research Abstract |
The purpose of this study is to clarify ecological roles of xenophyophorean foraminifera in the deep-sea biological communities and early evolution of foraminifera, we carried out molecular phylogenetic analyses, ultrastructural observations and stable isotope analyses. The result of molecular phylogenetic analyses of nuclear ribosomal RNA indicates that Shinkaiya lindsayi, xenophyophore, indicates sister clade with other xenophyophore, Syringammina corbicula, shows monophyly relationships. We carried out in situ incubation experiments for two days at east off Torishima Is. at a depth of 5, 371 m. Xenophyophore rapidly fed both dissolved and particulate organic materials. Although limited food materials reached to the deep-sea floor in the oligotrophic region, xenophyophore have a potential for rapid growth, they indicate rapid uptake of food materials.
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[Journal Article] Ribosomal DNA shows extremely low genetic divergence in a world-wide distributed, but disjunct and highly adapted marine protozoan(Virgulinella fragilis, Foraminiferida)2009
Author(s)
Tsuchiya, M., Grimm, G. W., Heinz, P., Stogerer, K., Ertan, K. T., Collen, J., Bruchert, V., Hemleben, C., Hemleben, V., and Kitazato, H.
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Journal Title
Marine Micropaleontology
Volume: 70
Pages: 8-19
Peer Reviewed
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[Presentation] アミノ酸窒素同位体比に基づく海洋生態系の食物網構造の解析2010
Author(s)
土屋正史,力石嘉人,大河内直彦,高野淑識,小川奈々子,藤倉克則,吉田尊雄,喜多村稔, Dhugal J. Lindsay,藤原義弘,野牧秀隆,豊福高志,山本啓之,丸山正,和田英太郎
Organizer
日本地球化学会年会
Place of Presentation
立正大学熊谷校舎
Year and Date
2010-09-08
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[Presentation] Bacteria diversity surrounding a new candidate genes Xenophyophores(Foraminifera) discovered at a depth 7111 m near the Boso Peninsula2009
Author(s)
Hori, S., Tsuchiya, M., Nishi, S., Arai, W., Yoshida, T., Takami, H.
Organizer
International Symposium on Chemosynthesis-Based Ecosystems(4th CBE)
Place of Presentation
名護市,万国津梁館
Year and Date
2009-07-02
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