Chemical basis of egg cannibalism in a caterpillar (Utetheisa ornatrix)

@article{Bogner1991ChemicalBO,
  title={Chemical basis of egg cannibalism in a caterpillar (Utetheisa ornatrix)},
  author={Franz X. Bogner and Thomas Eisner},
  journal={Journal of Chemical Ecology},
  year={1991},
  volume={17},
  pages={2063-2075}
}
Larvae of the mothUtetheisa ornatrix are shown to cannibalize eggs in the laboratory. They proved most cannibalistic if they were systemically deficient in pyrrolizidine alkaloid (PA), the defensive agent that protectsUtetheisa at all stages of development against predation, and whichUtetheisa acquire as larvae from their food plant. In exercising cannibalistic choice,Utetheisa larvae feed preferentially on eggs that are PA-Iaden rather than PA-free. Egg cannibalism can therefore… 

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References

SHOWING 1-10 OF 10 REFERENCES

Biparental defensive endowment of eggs with acquired plant alkaloid in the moth Utetheisa ornatrix.

Field and laboratory tests showed that the alkaloids of Utetheisa ornatrix protect eggs from predators, and a previously identified pheromone, derived by the male from the alkAloid and emitted during precopulatory behavior, may announce the male alkaloidal worth to the female.

Unpalatability of the pyrrolizidine alkaloid-containing moth, Utetheisa ornatrix, and its larva, to wolf spiders

Experiments demonstrating that Utetheisa, as larvae and adults, are protected against wolf spiders are reported.

Courtship pheromone production and body size as correlates of larval diet in males of the arctiid moth,Utetheisa ornatrix

Hydroxydanaidal, the corematal courtship pheromone of maleUtetheisa ornatrix, shows pronounced quantitative variation in natural populations of the moth, and could be used to gauge both the alkaloid content and body weight of their suitors.

Paternal allocation of sequestered plant pyrrolizidine alkaloid to eggs in the danaine butterfly,Danaus gilippus

Pyrrolizidine alkaloid sequestered by adult maleDanaus gilippus from plants is transferred in large measure to the female at mating, and by the female to the eggs. The eggs, presumably, are protected

Reinvestigation of oak leaf roller sex pheromone components and the hypothesis that they vary with diet.

The sex pheromone of the oak leaf roller, Archips semiferanus, was identified as a specific blend (67:33) of trans-11- and cis- 11-tetradecenyl acetates, which conflict with the hypothesis that the composition and perception of month sex phersomones vary with slight changes in diet.

Dihydropyrrolizine derivatives from unsaturated pyrrolizidine alkaloids.

  • A. Mattocks
  • Chemistry
    Journal of the Chemical Society. Perkin transactions 1
  • 1969
Methods are described for converting alkaloids having the dehydropyrrolizidine ring, and their N-oxides, to dihydropyrrolizine derivatives, which are also formed as metabolites when the alkaloids are