Fate of plant-derived secondary metabolites in three moth species (Syntomis mogadorensis,Syntomeida epilais,andCreatonotos transiens) |
| |
Authors: | Michael Wink Dietrich Schneider |
| |
Institution: | (1) Institut für Pharmazeutische Biologie der Universität, Im Neuenheimer Feld 364, D-6900 Heidelberg, Federal Republic of Germany;(2) Max-Planck-Institut für Verhaltensphysiologie, D-8130 Seewiesen/Starnberg, Federal Republic of Germany |
| |
Abstract: | Summary Larvae of three moth species were compared with respect to strategies used to cope with secondary metabolites (allelochemicals) present in their diet.Syntomeida epilais is monophagous and accepted only oleander (which contains cardenolides, CG). CG were detected as stored products in the larvae and also in the faeces and exuviae. Pure CG (digoxin and gitoxin) which do not occur in oleander fed on oleander leaves were sequestered as the oleander CG.Syntomis mogadorensis is polyphagous: given a choice larvae avoided plants with a high load of allelochemicals. Upon shortage of preferred plants they ate a wide variety of plants which contain alkaloids, terpenes, or phenolics. Of these allelochemicals, alkaloids and CG were mainly recovered in the faeces and only minute fractions in the larvae.Creatonotos transiens larvae behaved similarly toSyntomis in terms of polyphagy and non-resorption. However, the larvae took up and stored pyrrolizidine alkaloids (PA) such as heliotrine selectively.Creatonotos is thus polyphagous (a generalist) but also a PA-specialist which exploits PA as defensive agents, as a morphogen for the male pheromone gland, and as a precursor for the male pheromone.Abbreviations
CG
cardiac glycosides
-
IG
iridoid glycosides
-
PA
pyrrolizidine alkaloids
-
GLC
gas liquid chromatography
-
MS
mass spectrometry |
| |
Keywords: | Lepidoptera Herbivores Resorption Cardenolides Alkaloids |
本文献已被 SpringerLink 等数据库收录! |
|