PRECOCENE DERIVATIVES AND APHID MORPHOGENESIS

摘要: The precocenes have notable effects on insect development, in particular they can induce specific destruction of corpora allatal cells and thus prevent the synthesis juvenile hormones. As hormones wide-ranging physiological roles insects, from metamorphosis to reproduction, are also diverse. It has been suggested that high hormone titres aphids development wingless adult forms while low promote winged forms. morphogenetic precocene derivatives complex. They affect wing dimorphism some species, both promoting inhibiting depending upon experimental strategy, exhibit classical induction precocious indicating corpus allatum. promoted by a series 2,2-dimethylchromene investigated pea aphid, Acyrthosiphon pisum (Harris), structure-activity relations determined for induction, inhibition, metamorphosis. These experiments show compounds which not, or not so, effective inhibition inhibit formation more closely aligned with those Substitution alkylthio alkoxy groups at C7 alters activity profile 2,2-dimethylchroman no activity. © 1996 Wiley-Liss, Inc.