Attractiveness of Iranian synthesized pheromone of the olive fruit fly Bactrocera olea (Rossi) (Dip. Tephritidae)

The olive fruit fly Bactrocera oleae (Rossi) is an important pest cause a lots of damages these days in various climates condition. 1,7-Dioxaspiro[5.5]undecane (olean) as a attractive compound of the olive fruit fly was prepared successfully by several chemical steps. At first, this cyclic attractive compound was prepared from the reaction of the protected alchohol 3-butyn-1-ol and -valerolactone, followed by catalytic hydrogenation and finally treating with an acidic condition afforded olean. Attractiveness of Iranian synthesized pheromone a, at doses of 1, 2, 5, 50 and 100 mg was compared with non-Iranian synthesized pheromone and a control treatment (sticky yellow trap without pheromone) in 4 replications in an olive orchard (3 ha) at Kalaj region (Trom Sofla, Ghazvin) in 2010. Sticky traps (20×25 cm) were placed at the middle and southern part of trees. Distance between traps was 100 m. Pheromones were left in the traps for one month during which their catches were recorded weekly. Each week the sticky traps were renewed. Analysis of variance showed that during the first two weeks, Iranian synthesized pheromone at 50 and 100 mg doses had the highest catch rates which were not significantly different for non-Iranian synthesized pheromone catch rates. Analysis of variance showed that during the third week of study, there were significant differences in catch rates of Iranian synthesized pheromone and non-Iranian synthesized pheromone.