Effects of furoquinoline alkaloids on the growth and feeding of two polyphagous lepidopterans |
| |
| Authors: | Tara E Sackett G H Neil Towers Murray B Isman |
| |
| Institution: | (1) Department of Botany, University of British Columbia, Vancouver, BC, Canada;(2) Faculty of Land and Food Systems, University of British Columbia, Vancouver, BC, Canada;(3) Present address: Department of Natural Resource Sciences, McGill University, Montreal, QC, Canada |
| |
| Abstract: | Summary. The furoquinoline alkaloids skimmianine and dictamnine were tested for effects on the feeding and growth of larvae of the
generalist lepidopteran, Spodoptera litura. Skimmianine was further investigated for toxic and phototoxic effects on the larvae of Trichoplusia ni, also a generalist species. In feeding experiments with S. litura, growth and consumption of larvae decreased with increasing concentration of furoquinolines; skimmianine caused a greater
reduction in growth than dictamnine. In T. ni, dietary skimmianine reduced growth and consumption; when administered topically, it significantly reduced consumption but
without a concomitant reduction in growth. Phototoxicity of skimmianine was not apparent in T. ni because UV light failed to increase the negative effects of the alkaloid on larvae. |
| |
| Keywords: | Skimmianine dictamnine antifeedant phototoxicity Spodoptera litura Trichoplusia ni Rutaceae |
| 本文献已被 SpringerLink 等数据库收录！ |
|
