Journal of Chemical Ecology

, Volume 19, Issue 3, pp 395–410 | Cite as

Physiological sources of variation in chemical defense ofOreina gloriosa (Coleoptera: Chrysomelidae)

  • F. Eggenberger
  • M. Rowell-Rahier


The defensive secretion of the alpine chrysomelidOreina gloriosa is a complex mixture of mainly cardenolides and tyrosine betaine. Individually sampled secretions of adult laboratory-reared and field-collected beetles were analyzed by reverse-phase HPLC; 16 secretion components were quantified. Quantities and concentrations of different components were significantly affected by the age, sex, and reproductive status of individual beetles. Aging was correlated with marked increases (up to 4.4-fold) and decreases (up to 2.7-fold) of quantities and concentrations of several components. Differences between the sexes were smaller, but quantities of all components and concentrations of several components were larger in laboratory-reared females than in males. There was less of one component of the secretion in mated than unmated females, but the concentrations of four secretion components were higher (up to 1.6-fold) in mated females.

Key Words

Oreina gloriosa Coleoptera Chrysomelidae chemical defense cardenolides quantitative variation aging HPLC 


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Copyright information

© Plenum Publishing Corporation 1993

Authors and Affiliations

  • F. Eggenberger
    • 1
  • M. Rowell-Rahier
    • 1
  1. 1.Zoologisches Institut der Universität BaselBaselSwitzerland

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