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Identification and seasonal quantification of defensive secretion components ofOreina gloriosa (Coleoptera: Chrysomelidae) |
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| Authors: | F Eggenberger D Daloze J M Pasteels M Rowell-Rahier |
| Institution: | 1. Zoologisches Institut der Universit?t Basel, Rheinsprung 9, CH-4051, Basel, (Switzerland) 2. Laboratoire de Chimie Bio-organique, Faculté des Sciences, Université de Bruxelles, Av. F. D. Roosevelt 50, B-1050, Bruxelles, (Belgium) 3. Laboratoire de Biologie Animale et Cellulaire, Faculté des Sciences, Université de Bruxelles, Av. F. D. Roosevelt 50, B-1050, Bruxelles, (Belgium) |
| Abstract: | Tyrosine betaine, four new cardenolides (4, 5, 6, and7) and three known cardenolides (2, 3, and8) were isolated from the defensive secretion, of the leaf beetleOreina gloriosa and their chemical structure determined. 16 secretion components of individual beetles were quantified. Secretion composition of field-collected beetles was affected by season, sex and body weight. |
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