1995 Volume 20 Issue 3 Pages 265-271
Six structurally hybridized compounds between the mite alarm pheromone neryl formate [(Z)-3, 7-dimethyl-2, 6-octadienyl f ormate] and the aggregation pheromone lardolure [1R, 3R, 5R, 7R-1, 3, 5, 7-tetramethyldecyl formate] were prepared by inserting a methyl residue to 3, 7-dimethyloctyl formate skeleton. Compounds possessing allylic Z-double bond in the molecule demonstrated strong repellent activity against the dried fruit mite Carpoglyphus lactis, whereas ones possessing no allylic double bonds behaved as the aggregation kairomone against the same species. Compounds with allylic E-double bond indicated no peculiar activity. As the simplified compound, six 1-methylalkyl formates were prepared. All compounds at 10, 000ppm doses reproduced a state of conflict; motivation for escape at the center and for aggregation at the periphery, while the same compounds at 1000, 100 and 10ppm doses manifested aggregation kairomone activity exclusively.
