Ecological Chemistry and the Palatability Spectrum

@article{Brower1968EcologicalCA,
  title={Ecological Chemistry and the Palatability Spectrum},
  author={L. P. Brower and William N. Ryerson and Lorna Coppinger and Samantha Glazier},
  journal={Science},
  year={1968},
  volume={161},
  pages={1349 - 1350}
}
A new bioassay for comparing the palatability to avian predators of monarch butterflies reared on various asclepiadaceous food plants containing cardiac glycosides indicates a palatability spectrum. The monarchs reared on one plant species are six times as emetic as those fed another, while those raised on an asclepiad which lacks cardiac glycosides are not emetic at all. 
Cardiac Glycosides and Distastefulness: Some Observations on the Palatability Spectrum of Butterflies
The monarch butterfly Danaus plexippus sequesters cardiac gylcosides from northern species of Asclepias formerly reported to lack these noxious compounds. Thus, a new explanation must be sought as toExpand
Cardenolide content and palatability of a population of Danaus chrysippus butterflies from West Africa
SYNOPSIS The variation in cardenolide content found in 50 individuals of Danaus chrysippus is related to the type of food plant and the sequestering efficiency of the butterfly. The toxicity ofExpand
Palatability dynamics of cardenolides in the monarch butterfly
TLDR
Atlantic with Pacific Coast monarch populations are compared and quantitative relationships between cardenolide concentrations and palatability spectra are explored. Expand
The puzzle of monarch butterflies (Danaus plexippus) and their association with plants containing pyrrolizidine alkaloids
1. The chemical defences of monarch butterflies involve two kinds of secondary plant metabolites: cardiac glycosides (CGs) that are obtained from larval hostplants, and pyrrolizidine alkaloids (PAs)Expand
CHEMICAL COMMUNICATION, PLANT RELATIONSHIPS, AND MIMICRY IN THE EVOLUTION OF DANAID BUTTERFLIES
The knowledge on pheromone biology in danaid butterflies, on relations between adult danaids and pyrrolizidine alkaloid‐containing plants, and on relations between danaid larvae and cardiacExpand
Cardenolides in the defense of Caenocoris nerii (Hemiptera)
TLDR
While internally manufactured defenses were useful, improved protection was afforded by feeding on oleander seeds, which were significantly less likely to be killed compared with those C. nerii eating sunflower seeds. Expand
Some adaptations between Danaus plexippus and its food plant, with notes on Danaus chrysippus and Euploea core (Insecta: Lepidoptera)
TLDR
Behaviour of the egg-laying Monarch in captivity suggests that the concentration and quality of cardiac glycosides in the food plant are not important oviposition cues, and this butterfly can be assumed to have evolved an enzvmatic system well adjusted to the presence of cardenolides in its bodv tissues. Expand
Lucibufagins: Defensive steroids from the fireflies Photinus ignitus and P. marginellus (Coleoptera: Lampyridae).
TLDR
Feeding tests with thrushes led to the isolation of three novel steroid pyrones from fireflies responsible, in part at least, for the unpalatability of these insects to the birds. Expand
Reactions of various predators to insects storing heart poisons (cardiac glycosides) in their tissues
TLDR
Experiments in which mammals and birds were fed with insects which sequester and store cardiac glycosides, and the insensi-tivity of the quail to these substances is recorded are recorded. Expand
Fate of ingested iridoid glycosides in lepidopteran herbivores
TLDR
Thin-layer chromatography was used to follow the fates of iridoid glycosides ingested by four species of lepidopteran herbivores, ranging from cryptic and palatable to aposematic and unpalatable. Expand
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In the absence of complete metamorphosis in terrestrial insects, the adult food is likely to be the same as or similar to that of the nymph, with the result that the imago is not a pristine entity as far as food intake is concerned. Expand
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