Effect of alarm pheromone on the number of alate aphid of green peach aphid
Lu Hong Gong Yajun Wang Jun Niu Yuzhi Shi Baocai Zhang Zhili(Institute of Plant and Environmental Protection, Beijing Academy of Agricultural and Forestcy Sciences 100081)zhang Zhongning(Institute of Zoology,Academia Sinica)
Aphid alarm pheromone is a volatile compound shed from aphid’s corniculiwhen aphids are stimulated.It has a function for defence,This study explored the effect ofalarm pheromone on the number of alate aphid of green peach aphids. The results show:un-der long-term illumination (16hr, light: 8hr. dark),there was no effect on aphids;when illu-mination changed(from l6L:8D to 13L:11D),the number of alate aphids increased,due tobeing stimulated with hexane and different concentrations of alarm pheromone,there weremore alate aphids formed in the treatments than in the control.