publication . Article . 2009

Chemical defence in chrysomelid eggs and neonate larvae

Jacques M. Pasteels; Martine Rowell-Rahier; Désiré Daloze;
Open Access
  • Published: 17 Aug 2009 Journal: Physiological Entomology, volume 11, pages 29-37 (issn: 0307-6962, eissn: 1365-3032, Copyright policy)
  • Publisher: Wiley
  • Country: Switzerland
Eggs and neonate larvae of chrysomelid beetles (sub-tribes Chrysomelina and Phyllodectina) were investigated for the presence of defensive substances. <br> The two isoxazolinone glucosides (compounds 1 and 2), characteristic of the adult defence secretion, were detected in the eggs of all studied species. Compound 2, containing a nitropropionate, is always present in concentrations (above 10<sup>-2</sup> M), which are highly deterrent to the ant <i>Myrmica rubra</i>. This compound is not at all or only slightly toxic to ants at 10<sup>-2</sup> M. Compound 1, devoid of nitropropionate, is a minor constituent, and is neither deterrent nor toxic to ants. <br> The f...
Medical Subject Headings: fungi
free text keywords: Insect Science, Physiology, Ecology, Evolution, Behavior and Systematics, Hatching, Botany, ANT, Phratora vitellinae, biology.organism_classification, biology, Larva, Gastrophysa viridula, Myrmica rubra, Chrysomela, Salicin, chemistry.chemical_compound, chemistry
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