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Dobler S, Rowell-Rahier M. Production of cardenolides versus sequestration of pyrrolizidine alkaloids in larvae ofOreina species (Coleoptera, Chrysomelidae). J Chem Ecol. 1994;20(3):555-68doi: 10.1007/BF02059597.
Dobler, S., & Rowell-Rahier, M. (1994). Production of cardenolides versus sequestration of pyrrolizidine alkaloids in larvae ofOreina species (Coleoptera, Chrysomelidae). Journal of chemical ecology, 20(3), 555-68. https://doi.org/10.1007/BF02059597
Dobler, S, and Rowell-Rahier, M. "Production of cardenolides versus sequestration of pyrrolizidine alkaloids in larvae ofOreina species (Coleoptera, Chrysomelidae)." Journal of chemical ecology vol. 20,3 (1994): 555-68. doi: https://doi.org/10.1007/BF02059597
Dobler S, Rowell-Rahier M. Production of cardenolides versus sequestration of pyrrolizidine alkaloids in larvae ofOreina species (Coleoptera, Chrysomelidae). J Chem Ecol. 1994 Mar;20(3):555-68. doi: 10.1007/BF02059597. PMID: 24242111.
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J Chem Ecol. 1994 Mar;20(3):555-68. doi: 10.1007/BF02059597.

Production of cardenolides versus sequestration of pyrrolizidine alkaloids in larvae ofOreina species (Coleoptera, Chrysomelidae).

Journal of chemical ecology

S Dobler, M Rowell-Rahier

Affiliations

  1. Zoologisches Institut der Universität Basel, Rheinsprung 9, 4051, Basel, Switzerland.

PMID: 24242111 DOI: 10.1007/BF02059597

Abstract

Adult leaf beetles of the genusOreina are known to be defended either by autogenously produced cardenolides or by pyrrolizidine alkaloids (PAs) sequestered from the food plant, or both. In this paper we analyze larvae of differentOreina species and show that the larvae contain the same defensive toxins as the adults in quantities similar to those released in the adults' secretion. Both classes of toxins are found in the body and hemolymph of the larvae, despite their different origins and later distribution in the adults. Larvae of sequestering species differed in their PA patterns, even though they fed on the same food plants. The concentration in first-instar larvae of a PA-sequestering species was similar to that in fourth-instar larvae. In all stages examined, the amount of PAs per larva did not greatly exceed the estimated uptake of one day. Eggs of two oviparous species contained large concentrations of the adult's toxins, while neonates of a sequestering larviparous species had no PAs.

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