Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Abstract

Field tests on attractiveness of the synthetic sex pheromone of the peach fruit moth, Carposina niponensis Walsingham (Lepidoptera: Carposinidae).

Abstract

The synthetic pheromones (Z)-7-eicosen-11-one (compound A) and (Z)-7-nonadecen-11-one (compound B) were used in field tests in apple and peach orchards in Aomori and Fukushima Prefectures, Japan, to trap adult males of Carposina niponensis Wlsm. A polyethylene capsule and a polyethylene cap were better than 2 different types of rubber septa as dispensers of compounds A and B (20:1) when 0.1-0.3 mg pheromone mixture was used/trap but there was no difference at 1-3 mg/trap. The catches of males increased as the amount was increased from 1 to 3 mg/dispenser. Compound B did not appear to have a synergistic effect and equally good results were obtained with compound A alone. Attraction was not enhanced by the addition of (E)-isomers of compounds A and B or (Z)- and (E)-7-alken-11-ones of carbon number 17, 18, 21 and 23 at a level of up to 10% of the 20:1 mixture.