Journal of Chemical Ecology

, Volume 15, Issue 6, pp 1689–1697 | Cite as

Defensive secretion of the carabid beetlePasimachus subsulcatus

  • Bradley S. Davidson
  • Thomas Eisner
  • Brian Witz
  • Jerrold Meinwald


The defensive secretion of the carabid beetlePasimachus subsulcatus is a concentrated solution (up to 90%) of carboxylic acids, amounting to about 1% of body mass. It contains three major components (methacrylic, tiglic, and angelic acids) and four minor components (isobutyric, 2-methyl-butyric, isovaleric, and senecioic acids). In the single population of this large flightless beetle that was examined, the relative ratio of acidic components was remarkably constant from individual to individual.

Key words

Defensive secretion aliphatic acids beetle Coleoptera Carabidae Pasimachus subsulcatus carboxylic acids 


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Copyright information

© Plenum Publishing Corporation 1989

Authors and Affiliations

  • Bradley S. Davidson
    • 1
  • Thomas Eisner
    • 2
  • Brian Witz
    • 3
  • Jerrold Meinwald
    • 1
  1. 1.Department of ChemistryCornell UniversityIthaca
  2. 2.Section of Neurobiology and BehaviorCornell UniversityIthaca
  3. 3.Department of BiologyUniversity of South FloridaTampa

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