Oviposition preference of Bactrocera dorsalis（Hendel）to five varieties of Punica granatum

【Objective】To investigate the oviposition selectivity of Bactrocera dorsalis（Hendel）to different Punica granatum varieties and its relationship with the growth and development of offspring to provide reference for the prevention and control of B. dorsalis on pomegranate.【Method】Five P. granatum varieties（Luzi，Guangyan，Shazi，Suantian， and Houpi）were used as research materials. The fecundity of adults of B. dorsalis on different P. granatum varieties and the related growth and development parameters such as developmental duration，pupation progress and survival rate of larvae fed on different P. granatum varieties were measured. The oviposition selectivity of B. dorsalis on five P. granatum varieties and the effect of larvae fed on their growth and development were analyzed.【Result】B. dorsalis preferred to lay eggs on Luzi and Guangyan varieties. The amounts of eggs laid on the each fruits and fruit grains of the two varieties were 30.50，92.00 egg/grain and 39.75，87.75 egg/grain，respectively. The developmental duration of larvae and pupae on the two varieties was short，which were 10.57，11.97 d and 11.53，10.03 d，respectively. The pupation progress was fast and the pupa weight was large（9.65 g and 9.12 g，respectively）. The pupation rate and emergence rate were high，which were 90.00%，67.50% and 91.67%，81.67%，respectively.【Conclusion】There are great differences in the oviposition selectivity of B. dorsalis to different P. granatum varieties. The peel and smell of P. granatum varieties affect the oviposition selectivity， and the oviposition selectivity of B. dorsalisis related to the growth and development adaptability of its offspring. In the areas where the occurrence of B. dorsalis is serious，Suantian and Houpi varieties can be planted since B. dorsalis does not like to lay eggs on them and the varieties are not conducive to their growth and development，then the growth of B. dorsalis field population can be effectively inhibited.