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Ecological and physiological factors driving the evolution of longevity in social aphids

Research Project

Project/Area Number 18K14786
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 45040:Ecology and environment-related
Research InstitutionKeio University (2021)
The Graduate University for Advanced Studies (2019-2020)
The University of Tokyo (2018)

Principal Investigator

Uematsu Keigo  慶應義塾大学, 法学部(日吉), 助教 (00793861)

Project Period (FY) 2018-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2019: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2018: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Keywords虫こぶ / アブラムシ / 寿命 / 酸素濃度 / 遺伝子発現 / 進化 / 社会性昆虫 / ゴール / おばあさん効果 / おばあさん仮説
Outline of Final Research Achievements

We examined seasonal changes in the population structure and physiology of the gall-forming nipponaphidine aphids in the completely closed gall formed on Distylium racemosum by using field surveys and laboratory experiments. We found that the aged individuals survived while significantly losing their body weight and that the closed space inside the gall was in a hypoxic environment. In addition, by using RNA-seq we identified genes and transposable elements whose expression increased or decreased with aging.

Academic Significance and Societal Importance of the Research Achievements

老化を理解することは学術的のみならず、高齢社会を迎えた我々にとって重要な社会的・経済的課題である。ムネアブラムシ族は、アブラムシの中では非常に長寿であり、また繁殖終了後の利他行動が進化した、昆虫において重要なグループである。本研究成果は、虫こぶ内の閉鎖環境という生態に着目し、生態学的・生理学的に解析し、なぜ閉鎖環境化で長寿および利他行動が進化したのかを系統学的に探る上で重要となる基礎データを得た先駆的な研究である。

Report

(5 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (1 results)

All 2019

All Presentation (1 results)

  • [Presentation] 社会性アブラムシにおける長寿の進化をもたらす要因2019

    • Author(s)
      植松圭吾
    • Organizer
      日本動物行動学会大会
    • Related Report
      2019 Research-status Report

URL: 

Published: 2018-04-23   Modified: 2023-01-30  

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