Naturally occurring antifeedants: effects on two polyphagous lepidopterans
1991
Nawrot, J. (University of British Columbia, Vancouver (Canada). Dept. of Plant Science) | Koul, O. | Isman, M.B. | Harmatha, J.
Fourteen plant allelochemicals, all of which are strong antifeedants to stored product coleopterans, were evaluated as antifeedants and larval growth inhibitors against the variegated cutworm, Peridroma saucia, and the bertha armyworm, Mamestra configurata (Lep., Noctuidae). Bisabolangelone, a sesquiterpene, podophyllotoxin, a lignan, and aginosid, a saponin, are strongly deterrent to P. saucia larvae in a feeding choice test. When added to artificial diets, the sesquiterpene lactone bakkenolide A was the most inhibitory to larval growth of neonate cutworms, whereas bisabolangelone was the most inhibitory to neonate armyworms. Toxicity of bakkenolide A, xanthotoxin (a furanocoumarin), and podophyllotoxin to insects is discussed
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