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在饲养笼内分别饲喂枹栎(Quercus serrata Murray)幼果、枹栎嫩枝、清水和10%蔗糖水,以不饲喂任何食物为对照,研究营养补充对枹栎象Curculio haroldi Faust成虫寿命的影响.同时,还研究枹栎象的个体大小和性别对其寿命是否有潜在影响.结果表明:补充不同营养对枹栎象的寿命有显著影响,其中10%蔗糖水组的寿命最长,是其他营养组的3～4倍.另外,虫体大小(即体长)对枹栎象寿命也有显著影响,且雌虫寿命一般比雄性略长,但性别间无显著差异.研究结果说明,营养品质和虫体大小可显著影响枹栎象寿命,进而影响其繁殖以及对寄主植物的危害.“,”By feeding adult weevils with different kinds of nutrition, I.e. Quercus serrata Murray young fruits, Q . Serrata young branches, water, 10% sucrose water, and nothing as control, the effect of supplementary nutrition on adult lifetime of acorn weevils ( Curculio haroldi Faust) was studied in net-cages. In addition, it was also investigated whether body size and sex as potential factors would influence weevil lifetime. The results showed that the lifetime of acorn weevils was significantly affected when added different kinds of nutrition. The lifetime of adult weevils feeding 10% sucrose water had 3-4 times as long as they fed any other nutrition. The weevil size based on body length significantly affected their lifetime, and the lifetime of female weevils was also slightly longer than that of male weevils though no significant difference was found between sexes. In conclusion, nutrition quality and weevil size played critical roles in the lifetime of this weevil species, which may be important for its reproductive success and subsequent damage to its host plants.