The effects of synergists on the morphogenetic activity of farnesyl methyl ether (a), 10,11-episulphido farnesyl methyl ether (b), 10,11-epoxyfarnesyl methyl ether (c), farnesyl methyl sulphide (d), farnesyl methyl sulphoxide (e) and ethyl 10,11-episulphido farnesoate (f) were determined. Both synergists showed very low juvenilizing activity. All compounds except f were more active in T. molitor. a < b < c showed increasing order of basal activity and of synergism. d had low activity in both insects and was not affected by piperonyl butoxide (PB). In O. fasciatus, e had low activity which was slightly increased by PB. However, in T. molitor e showed moderate activity that was decreased by PB, suggesting an activation reaction, possibly to the sulphone. f showed high activity which was little affected by synergists.
ASJC Scopus subject areas
- Biochemistry, Genetics and Molecular Biology(all)
- Pharmacology, Toxicology and Pharmaceutics(all)