Journal of Chemical Ecology

, Volume 30, Issue 3, pp 577–588

Defensive Chemicals of Two Species of Trachypachus Motschulski

  • Athula B. Attygalle
  • Xiaogang Wu
  • Josef Ruzicka
  • Sheetal Rao
  • Silvina Garcia
  • Kithsiri Herath
  • Jerrold Meinwald
  • David R. Maddison
  • Kipling W. Will
Article

DOI: 10.1023/B:JOEC.0000018630.79922.94

Cite this article as:
Attygalle, A.B., Wu, X., Ruzicka, J. et al. J Chem Ecol (2004) 30: 577. doi:10.1023/B:JOEC.0000018630.79922.94

Abstract

Analyses of pygidial gland contents of two species of a previously uninvestigated family of beetles (Trachypachidae) by Gas Chromatography-Mass Spectrometry (GC-MS) revealed that their chemistry is similar to that reported from many members of the family Carabidae. Nevertheless, the composition ofDefensive gland fluids of the two species Trachypachus slevini and T. gibbsii differs sufficiently to distinguish between the two species solely on the basis of theirDefensive chemistry. The major components of T. slevini glandular fluid are methacrylic, tiglic, and octanoic (= caprylic) acids, together with the hydrocarbon (Z)-9-pentacosene. In contrast, the glandular contents of T. gibbsii contain a rather unique mixture of polar and nonpolar compounds, the principal constituents of which are methacrylic and ethacrylic acids (= 2-ethylacrylic acid), together with 2-phenylethanol, 2-phenylethyl methacrylate, 2-phenylethyl ethacrylate, and (Z)-9-pentacosene.

Defensive secretionmethacrylic acidtiglic acidoctanoic acidTrachypachidaeTrachypachus sleviniTrachypachus gibbsii

Copyright information

© Plenum Publishing Corporation 2004

Authors and Affiliations

  • Athula B. Attygalle
    • 1
  • Xiaogang Wu
    • 1
  • Josef Ruzicka
    • 1
  • Sheetal Rao
    • 1
  • Silvina Garcia
    • 2
  • Kithsiri Herath
    • 2
  • Jerrold Meinwald
    • 2
  • David R. Maddison
    • 3
  • Kipling W. Will
    • 4
  1. 1.Department of Chemistry and Chemical BiologyStevens Institute of TechnologyHobokenUSA
  2. 2.Department of Chemistry and Chemical BiologyCornell UniversityIthacaUSA
  3. 3.Department of EntomologyUniversity of ArizonaTucsonUSA
  4. 4.Division of Insect BiologyUniversity of CaliforniaBerkeleyUSA