Ashraf El-Sayed

) Summary The orientation behaviour of male codling moth, C ydia pomonella (L.) to a pheromone source (E8,E10-12OH, codlemone) with and without E8,Z10-12OH and/or E8,E10-12Ac was investigated in a  ight tunnel using a three dimensional video recording system. Both E8,Z10-12OH and E8,E10-12Ac antagonized