Ecological roles of Xenophyophorean foraminifera in the deep-sea biological communities and early evolution of foraminifera

Xenophyophorean有孔虫在深海生物群落中的生态作用及有孔虫的早期进化

• 批准号: 21540489
• 负责人: TSUCHIYA Masashi
• 金额: $ 2.91万
• 依托单位: Japan Agency for Marine-Earth Science and Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2009
• 资助国家: 日本
• 起止时间: 2009 至 2011
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-21540489/
• 关键词: 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; 深海底層生態系における種多様性; 分子系統解析

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.

为阐明异源有孔虫在深海生物群落中的生态学作用和早期有孔虫的演化，本研究进行了分子系统发育分析、超微结构观察和稳定同位素分析。核核糖体RNA分子系统发育分析结果表明，异生体Shinkaiya lindsayi与其他异生体Syringammina corbicula为姐妹分支，表现出单系关系。我们在鸟岛以东海域进行了为期两天的原位孵化实验。水深5371米。异生菌迅速喂养溶解和颗粒有机物质。虽然在贫营养区，到达深海海底的食物物质有限，但异生菌具有快速生长的潜力，它们表明食物物质的快速吸收。

项目成果

Ribosomal DNA shows extremely low genetic divergence in a world-wide distributed, but disjunct and highly adapted marine protozoan (Virgulinella fragilis, Foraminiferida)

• DOI: 10.1016/j.marmicro.2008.10.001
• 发表时间: 2009-01
• 期刊: Marine Micropaleontology
• 影响因子: 1.9
• 作者: M. Tsuchiya;G. Grimm;P. Heinz;K. Stögerer;K. Ertan;J. Collen;V. Brüchert;C. Hemleben;V. Hemleben;H. Kitazato

岩礁地性底生有孔虫Planoglabratella opercularisの盗葉緑体の維持に光が与える影響

光对珊瑚礁底栖有孔虫 Planoglabratella operularis 盗贼叶绿体维持的影响

• 发表时间: 2012
• 作者: 宮脇省次;ほか
• 通讯作者: ほか

岩礁地性底生有孔虫Planoglabratella opercularisにみられる盗葉緑体の獲得機構の解明

阐明珊瑚礁底栖有孔虫 Planoglabratella operularis 中盗叶绿体的获取机制

• 发表时间: 2011
• 作者: 宮脇省次;ほか
• 通讯作者: ほか

A new genus of xenophyophores (Foraminifera) from Japan Trench: morphological description, molecular phylogeny and elemental analysis

• DOI: 10.1111/j.1096-3642.2008.00493.x
• 发表时间: 2009-07-01
• 期刊: ZOOLOGICAL JOURNAL OF THE LINNEAN SOCIETY
• 影响因子: 2.8
• 作者: Lecroq, Beatrice;Gooday, Andrew John;Pawlowski, Jan
• 通讯作者: Pawlowski, Jan

古生物学辞典

古生物学词典

• 发表时间: 2010
• 作者: 西憲敬;鈴木順子;濱田篤;塩谷雅人;掛川武
• 通讯作者: 掛川武