榆紫叶甲赤眼蜂基础生物学特性及其实验种群生命表  

The general biology and experimental population life table about Asynacta ambrostomae

作　　者：王秀梅[1] 臧连生[1] 林宝庆[2] 杨军[2] 陈鹏[1] 阮长春[1] 

机构地区：[1]吉林农业大学生物防治研究所/天敌昆虫应用技术工程中心,长春130118 [2]吉林向海国家级自然保护区管理局,向海134215

出　　处：《生态学报》2013年第20期6553-6559,共7页Acta Ecologica Sinica

基　　金：吉林省林业科技资助项目(2011-02)

摘　　要：榆紫叶甲赤眼蜂(Asynacta ambrostomae Liao)是榆紫叶甲卵期重要寄生蜂。在实验条件下对榆紫叶甲赤眼蜂生殖、寿命、性比等生物学特性进行观察研究。结果表明:每粒寄主卵平均出蜂量为2.92头,雌雄比为3.64∶1,营两性生殖,孤雌产雄。不同营养条件对寿命有显著影响,其中成虫补充20%蜂蜜水和20%蔗糖水能显著增加雌雄虫寿命。组建了25℃条件下榆紫叶甲赤眼蜂成蜂补充不同营养的实验种群生命表,成虫补充20%蜂蜜水、20%蔗糖水、清水、对照组(不添加任何物质)的净生殖力R0分别为74.42、65.27、56.77和44.50。可见,成蜂补充营养能提高种群生殖力。研究结果将为榆紫叶甲赤眼蜂的开发利用提供理论依据。Asynacta ambrostomae Liao is an important parasitoid of the Ambrostoma quadriimpressum Motschulsky egg, which is an important monophagous pest of the Ulmus pumila Elm. However, the biological and ecological characteristics of Asynacta ambrostomae Liao have had little coverage. In order to define the utilization value and biological control potential of Asynacta ambrostomae, we have investigated the natural parasitic rate, sex ratio, reproductive type, number of wasps per host egg and body length of Asynacta ambrostomae. At the same time, the laboratory population life table of Asynacta ambrostomae was established by calculating longevity, survival rate and adult reproduction. The results showed that the wasps were lagging behind the egg stage of the Ambrostoma quadriimpressum. The average parasitic rate of Asynacta ambrostomae Liao was only around 33%, when Ambrostoma quadriimpressum Motschulsky were in peak oviposition period ; its average parasitic rate was 89.2% when the host was in the post-oviposition stage. During nurture, the number of wasps per host egg was 2.92, and the average sex ratio was 3.64：1 （female ：male） ; the type of reproduction in wasps was sexual reproduction, although it can perform parthenogenesis, and the offspring are pure males. The experimental populations were kept in the laboratory and fed on a 20% honey solution, 20% sucrose solution and water; meanwhile we provided no additional nutrition as CK. Through the construction of population life tables for the Asynacta ambrostomae experimental population at different stages of nutrition, six parameters were obtained, including net reproduction, generation averageperiod, intrinsic rate of increase, finite rate of increase, oviposition per female and population doubling time, which revealed the effects of nutrition on the growth and development, life expectancy and fecundities of Asynacta ambrostomae. The results showed that different nutritional conditions have a significant influence on male and female longevity, and the total egg

关 键 词：榆紫叶甲 榆紫叶甲赤眼蜂 生物学 营养 生命表 

分 类 号：S763[农业科学—森林保护学]