Abstract
The parsnip webworm, Depressaria pastinacella (Lepidoptera: Oecophoridae), feeds exclusively on apiaceous hostplants containing furanocoumarins, compounds capable of oxygen-dependent and oxygen-independend photosensitization. Despite high titers of antioxidant enzymes relative to other herbivorous insects, webworms cannot tolerate nonhost photosensitizers such as alpha-terthienyl or beta-carboline alkaloids at dietary concentrations of 0.01% or less. Tolerance of skimmianine, a furano-quinoline alkaloid, may be due to its structural resemblance to furanocoumarins, which are metabolized by cytochrome P450 monooxygenases in this species.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 81-85 |
| Number of pages | 5 |
| Journal | Chemoecology |
| Volume | 1 |
| Issue number | 3-4 |
| DOIs | |
| State | Published - Dec 1990 |
Keywords
- Depressaria pastinacella
- Lepidoptera
- Oecophoridae
- alpha-terthienyl
- harmalol
- harmane
- harmine
- parsnip webworm
- phototoxicity
- skimmianine
ASJC Scopus subject areas
- Ecology, Evolution, Behavior and Systematics
- Biochemistry