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1993 Fiscal Year Final Research Report Summary

Nest Recognition Chemical Cue of Social Insects and its ecological role

Research Project

Project/Area Number 04660051
Research Category

Grant-in-Aid for General Scientific Research (C)

Allocation TypeSingle-year Grants
Research Field 植物保護
Research InstitutionKyoto Institute of Technology

Principal Investigator

YAMAOKA Ryohei  Kyoto Institute of Technology Applied Biology Associate Professor, 繊維学部, 助教授 (00111948)

Project Period (FY) 1992 – 1993
KeywordsCaptotermes formosanas / Nest recognition factor / Steroid Ketone / Cholestanon / Sitostanon / Arrestant of termite / Aggregation
Research Abstract

One big characterisity of social insects is that they live in some kind of selter which is called nest. The worker cast member leave the nest to search food but always come back to the nest. What is the factor that makes the social insect come back to the nest. We observed that a small pieces of the termite Coptotermes formosanus nest aggregates the nest members. A chloroform extracts of the nest applied on a filter paper also aggregate the nest member. We started the isolation of the aggregation pheromone. After purification by silica gel column chromatography, the attractancy was lost and only arrestant activity was present in one of the fractions. In the active fraction, we identified several kinds of steroid compounds. We prepared the authentic steroids and the arrestant activity of each compound was checked by bioassay. As the results, cholestanon and sitostanon showed potent arrestant activity that was equivalent to the chloroform extract of the nest. The cholestanon and sitostanaon are not present in termite body extract. These substances are produced in gut of the termite.

  • Research Products

    (6 results)

All Other

All Publications (6 results)

  • [Publications] R.YAMAOKA: "Nest pieces of termite C.formosunus that induce aggregation of the nest members." Chemoecology.

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] R.YAMAOKA: "Identification of arrestant of the termite C.formosunus from the nest." J.Chem.Ecol.,.

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] M.TOKORO: "(Z,E,E)dodeatrien-1-al:a minor component of trail pheromme of termite captatemest〓 formosunus." J.Chem.Ecol.,. 20. 199-215 (1994)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] R.YAMAOKA: "Nest pieces of fermite C.formosanus that induce aggregation of the nest members" Chemoecology.

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] R.YAMAOKA: "Identification of arrestant of the fermite C.formosanus from the nest" J.Chem.Ecol.

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] M.TAKORO: "(Z,E,E) dodecafrien-1-al : a miror componend of the frail Hermone of the termite Coptotermes formosanus"

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 1995-03-27  

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