Abstract: Codling moth (Cydia pomonella) is a worldwide pest of stone fruit trees, and an important quarantine target in China. Its occurrence, damage, and potential expansion in this country should be seriously concerned. Host plant volatiles, the species-specific attractants of C. pomonella, have attracted extensive attention. This paper reviewed the researches on the interactions between host plant source volatiles and C. pomonella, with the focus on the effects of the volatiles on the behaviors of C. pomonella, e.g., host orientation, courting and mating, and spawning, etc., the changes of the volatile components released by the host plants after fed by C. pomonella larvae, and the impacts of the volatiles on the sex pheromone of C. pomonella. The research progress and field application of plant source pear ester were also introduced, aimed to provide a reference for the prevention and control of C. pomonella in China.

Key words: Cydia pomonella, host plant, plant source odor, sex pheromone, microbial diversity, 16S rRNA, next generation sequencing (NGS), selection strategy