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Titolo:
BEHAVIORAL-EFFECTS OF CAROTENOID SEQUESTRATION BY THE PARSNIP WEBWORM, DEPRESSARIA-PASTINACELLA
Autore:
CARROLL M; HANLON A; HANLON T; ZANGERL AR; BERENBAUM MR;
Indirizzi:
UNIV ILLINOIS,DEPT ENTOMOL,320 MORRILL HALL,505 S GOODWIN URBANA IL 61801 UNIV ILLINOIS,DEPT ENTOMOL URBANA IL 61801 POMONA COLL CLAREMONT CA 91711
Titolo Testata:
Journal of chemical ecology
fascicolo: 12, volume: 23, anno: 1997,
pagine: 2707 - 2719
SICI:
0098-0331(1997)23:12<2707:BOCSBT>2.0.ZU;2-G
Fonte:
ISI
Lingua:
ENG
Soggetto:
INSECT HERBIVORES; VITAMIN-A; LEPIDOPTERA; FURANOCOUMARIN; PLANTS; PHOTOTOXICITY; ANTIOXIDANTS; ADAPTATIONS; NYMPHALIDAE; NOCTUIDAE;
Keywords:
DEPRESSARIA PASTINACELLA; PARSNIP WEBWORM; PASTINACA SATIVA; WILD PARSNIP; LUTEIN; UV AVOIDANCE; PHOTOTOXICITY; ANTIOXIDANT; CAROTENOID; LEPIDOPTERA;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
45
Recensione:
Indirizzi per estratti:
Citazione:
M. Carroll et al., "BEHAVIORAL-EFFECTS OF CAROTENOID SEQUESTRATION BY THE PARSNIP WEBWORM, DEPRESSARIA-PASTINACELLA", Journal of chemical ecology, 23(12), 1997, pp. 2707-2719

Abstract

The parsnip webworm, Depressaria pastinacella, acquires a distinct yellow stripe when it consumes the yellow flowers of its principal host plant, Pastinaca saliva, the wild parsnip. Caterpillars raised on artificial diet lacking host-plant material lack this yellow coloration. By chemical characterization and comparison of caterpillars raised on parsnip flowers and on artificial diet, we were able to determine that lutein, along with smaller amounts of other xanthophylls from the hostplant, is selectively sequestered in the fat body. In bioassays designed to measure avoidance of ultraviolet light, caterpillars raised on parsnip flowers or on artificial diet supplemented with lutein were less likely to avoid exposure to ultraviolet light than caterpillars raised on unaugmented artificial diet and thus lacking sequestered carotenoids. The ability to sequester xanthophylls, which are highly effective antioxidants, may confer a selective advantage on these caterpillars, whose apiaceous host plants produce large quantities of furanocoumarins, natural products that are photoactivated by light wavelengths inthe ultraviolet region; such sequestered pigments may reduce not onlythe oxidative stress associated with ultraviolet light and diurnal foraging but also the photooxidative stress associated with ingestion ofphotoactive furanocoumarins.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 30/11/20 alle ore 07:06:53