Pheromone Evaluation of Four Geometric Isomers of 4, 11-Hexadecadienal toward Male Eri-Silk Moths

Abstract

Four geometric isomers of 4, 11-hexadecadienal were prepared and their pheromone activities to male eri-silk moths were evaluated by using the fluttering test and electro-antennography. None of these compounds showed any activity in spite of their similar structure to other pheromone mimics and to the natural pheromone. These result suggest that the presence of 6, 11-double bonds is essential for pheromone activity.