Spatio-temporal variability in recruitment of benthic invertebrates in hydrothermal vents

• Project/Area Number: 24570037
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Ecology/Environment
• Research Institution: Tokai University (2015); Okinawa Institute of Science and Technology Graduate University (2012-2014)
• Principal Investigator: NAKAMURA MASAKO 東海大学, 海洋学部, 講師 (50580156)
• Co-Investigator(Kenkyū-buntansha): WATANABE Hiromi 海洋研究開発機構, 極限環境生物圏領域, 研究員 (50447380) ; SASAKI Takenori 東京大学, 総合研究博物舘, 准教授 (70313195)
• Research Collaborator: NAKAJIMA Yuichi 沖縄科学技術大学院大学, 海洋生態物理学ユニット, 研究員 (50581708)
• Project Period (FY): 2012-04-01 – 2016-03-31
• Project Status: Completed (Fiscal Year 2015)
• Budget Amount: ¥5,590,000 (Direct Cost: ¥4,300,000、Indirect Cost: ¥1,290,000); Fiscal Year 2015: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000); Fiscal Year 2014: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000); Fiscal Year 2013: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000); Fiscal Year 2012: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
• Keywords: 熱水生態系 / 幼生加入 / ベントス群集 / 幼生分散 / 熱水域 / 沖縄トラフ / ベントス / 熱水地域

Outline of Final Research Achievements

Due to growing anthropogenic impacts on hydrothermal vents, understanding on community structuring and maintaining mechanisms through larval recruitment is crucial. In this study, we aimed to quantify the recruitment variability of benthos at the hydrothermal vents in the Okinawa Trough, using artificial colonization plates. We set the plates at six different vents and retrieved them from two vents. Animal composition and abundance on the plates were different between vents, among sites within a vent, and between timings of recovery of the plates. The variability found in the recruitment might be influenced by reproductive and early-life history characteristics.

Research Products

• [Journal Article] Insights into life-hisotyr traits of Munidopsis app. (Anomura: Munidopsidae) from hydrothermal vent fields in the Okinawa Trough, in comparison with the existing data (2015)
  • Author(s): Masako Nakamura, Chong Chen, Satoshi Mitarai
  • Journal Title: Deep-Sea Research I Volume: 100 Pages: 48-53
  • DOI: 10.1016/j.dsr.2015.02.007
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Life history traits of Lepetodrilus nux in the Okinawa Trough, based upon gametogenesis, shell size, and genetic variability. (2014)
  • Author(s): Nakamura, M., Watanabe, H., Sasaki, T., Ishibashi, J., Fujikura, K., Mitarai, S.
  • Journal Title: Marine Ecology Progress Series Volume: 未定 Pages: 119-130
  • DOI: 10.3354/meps10779
  • Peer Reviewed
• [Presentation] 沖縄トラフ伊平屋北熱水域における「ちきゅう」掘削後のベントス幼生加入パターン (2015)
  • Author(s): 中村雅子、中島祐一、渡部裕美、佐々木猛智、山本 啓之、御手洗哲司
  • Organizer: 2015年日本プランクトン学会・日本ベントス学会合同大会
  • Place of Presentation: 札幌
  • Year and Date: 2015-09-02
• [Presentation] Habitat segregation in transition zones in hydrothermal vent fields in the Okinawa Trough, northwestern Pacific (2015)
  • Author(s): Hiromi WATANABE, Masahiro YAMAMOTO, Takuya YAHAGI, Tomomi OGURA, Yoshimi TAKAHASHI, Masako NAKAMURA, MiHye SEO, Hiroshi MIYAKE, Shigeaki KOJIMA, Tomoo WATSUJI, Ken TAKAI, Jun-ichiro ISHIBASHI, Katsunori FUJIKURA
  • Organizer: 14th Deep-Sea Biology Symposium
  • Place of Presentation: Portugal
  • Year and Date: 2015-08-31
  • Int'l Joint Research
• [Presentation] Gametogenesis and population structure of a hydrothermal vent gastropod Lepetodrilus nux at different vent sites in Okinawa Trough (2012)
  • Author(s): 中村雅子
  • Organizer: 13th International Deep-Sea Biology Symposium
  • Place of Presentation: Wellington, New Zealand