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Understanding the effects of sessile animal communities on biodiversity formation and feeding habitat in coastal ecosystems

Research Project

Project/Area Number 18K05791
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 40030:Aquatic bioproduction science-related
Research InstitutionKitasato University

Principal Investigator

Hirose Masato  北里大学, 海洋生命科学部, 講師 (10809114)

Project Period (FY) 2018-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2020: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2019: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2018: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Keywords固着性動物 / 種組成 / 出現動態 / 小型甲殻類 / コケムシ / 摂餌生態 / 多様性 / 環境収容力 / ワレカラ / 摂餌行動 / 環境DNA / 棲み込み / 表在性動物 / 分類 / 生活史
Outline of Final Research Achievements

The relationships between the species composition and seasonality of sessile organisms, and their habitat environments, and small benthic organisms inhabiting these sessile organisms were clarified by survey using settlement panels and observation of bottom communities by ROV in Otsuchi Bay, Okirai Bay, and Matsushima Bay. The environmental DNA in the seawater was also used to verify the results of the survey using settlement panels. Furthermore, the species composition, abundance, and feeding behavior of small crustaceans that using sessile organism assemblage were also investigated to provide an overview of their life history and their importance in coastal ecosystems. In addition, the feeding ecology of tufted bryozoan Bugula neritina, which is the dominant species on the settlement plates, was observed under different water temperatures, currents, and food concentrations, to clarify the relationship between the environmental factors and food intake.

Academic Significance and Societal Importance of the Research Achievements

本研究は,三陸沿岸域の養殖施設等にみられる固着性動物について,細かな環境の違いでその種組成や生物量が大きく異なることを明らかとした.この結果は当該海域における固着性動物の出現動態の把握や今後の予測を行う上で重要な知見になると期待される.また本研究は,固着性動物群集に棲み込む小型底生生物の具体的な種組成や生物量のほか,異なる環境下でのフサコケムシの摂餌量も初めて明らかにした.これらの結果はいずれの動物も沿岸域の餌料環境や生物量に少なからず影響を及ぼすことを示しており,ここで得られた具体的なデータは,今後の沿岸生態系モデルの構築や環境収容力推定において有用な情報を提供すると期待される.

Report

(4 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (8 results)

All 2021 2020 2019 2018

All Presentation (8 results) (of which Int'l Joint Research: 1 results,  Invited: 1 results)

  • [Presentation] 餌料環境がコケムシの卵黄栄養型幼生の行動に及ぼす影響2021

    • Author(s)
      大木雄介,広瀬雅人
    • Organizer
      2021年度日本付着生物学会研究集会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 岩手県越喜来湾および大槌湾における付着板を用いたコケムシの出現動態に関する研究2021

    • Author(s)
      須山幹彦,広瀬雅人
    • Organizer
      2021年度日本付着生物学会研究集会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 異なる水温・流速・餌濃度環境下におけるフサコケムシの摂餌量2020

    • Author(s)
      広瀬雅人,大橋孝輔,田口銀嗣,大木雄介
    • Organizer
      2020年度日本付着生物学会研究集会
    • Related Report
      2019 Research-status Report
  • [Presentation] 養殖漁業に関わる付着生物の生態2020

    • Author(s)
      広瀬雅人
    • Organizer
      大船渡市漁業就業者確保育成協議会主催 漁業に関する勉強会「漁場環境について考える」
    • Related Report
      2019 Research-status Report
    • Invited
  • [Presentation] 三陸沿岸の水中垂下物上の固着性動物群集をとりまく海洋生物学2019

    • Author(s)
      広瀬雅人
    • Organizer
      2019年度日本付着生物学会シンポジウム「三陸における付着生物研究」
    • Related Report
      2019 Research-status Report
  • [Presentation] Experimental study on the effect of temperature, flow velocity, and particle concentration on feeding and digestion in Bugula neritina2019

    • Author(s)
      Hirose M., Ohashi K. and Taguchi G.
    • Organizer
      18th International Bryozoology Association Conference
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] 岩手県越喜来湾の人工構造物上にみられる付着生物群集を利用する表在性動物の種組成と生活史2019

    • Author(s)
      広瀬雅人,古谷恵亮,小林勇太,難波信由
    • Organizer
      2019年度日本付着生物学会研究集会
    • Related Report
      2018 Research-status Report
  • [Presentation] 大槌湾・越喜来湾の付着生物群集と底生無脊椎動物の多様性2018

    • Author(s)
      広瀬雅人
    • Organizer
      いわて海洋コンソーシアム研究者交流会
    • Related Report
      2018 Research-status Report

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Published: 2018-04-23   Modified: 2022-01-27  

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