管氏肿腿蜂对桑天牛幼虫的寄生行为及防治效果  

Parasitization of the Mulberry Longhorn Beetle Apriona germari by Sclerodermus guani (Hymenoptera:Bethylidae) in Laboratory and Field Trials

作　　者：王雪菲 陈孟 白嘉伟 刘鑫鑫 李会平[1,2] WANG Xuefei;CHEN Meng;BAI Jiawei;LIU Xinxin;LI Huiping(College of Forestry,Hebei Agricultural University,Baoding 071000,China;Hebei Key Laboratory of Forest Tree Germplasm Resources and Forest Protection,Baoding 071000,China)

机构地区：[1]河北农业大学林学院,保定071000 [2]河北省林木种质资源与森林保护重点实验室,保定071000

出　　处：《中国生物防治学报》2020年第3期335-339,共5页Chinese Journal of Biological Control

基　　金：河北省强势特色学科资助项目(LX1803)。

摘　　要：桑天牛是重要的蛀干害虫,管氏肿腿蜂是天牛科、小蠹科等钻蛀性害虫的重要寄生性天敌。本文以桑天牛幼虫为寄主,分别接1、2、3头雌蜂,观察寄生过程、发育历期、寄生率、产卵量、羽化率和后代性比及室内和田间防治效果。结果表明,管氏肿腿蜂发育一代约31d。管氏肿腿蜂接蜂后5d,雌蜂开始在寄主体表产卵,5 d后卵孵化为幼虫,5~7 d后开始化蛹,14~16 d后羽化成虫。蜂虫比对管氏肿腿蜂的寄生过程及发育历期没有显著影响。但对寄生率、产卵量、羽化率和后代性比产生了明显的影响。当蜂虫比为1:1、2:1、3:1时,随着蜂虫比增大,管氏肿腿蜂的寄生率提高,分别为66.67%、83.33%、83.33%;产卵量亦增多,分别为16粒、16.57粒、22.71粒;羽化率逐渐降低,分别为83.55%、80.30%、60.90%;后代性比均呈现出雌蜂数量明显高于雄蜂的状态。管氏肿腿蜂对桑天牛幼虫有较高的寄生率,在室内和田间平均寄生率分别为71.43%和67.78%。Apriona germari is a primary wood boring insect pest, and Sclerodermus guani is one of the most important natural enemies of borer pests. In this paper, we reported results of developmental duration, parasitism rates, fecundity, emergence rates, and offspring sex ratios of and control efficacy under laboratory and field conditions by S. guani using larva of A. germari as host. The results show that parasitoid generation development time was about 31 d. Five d after exposure, the wasps began to lay eggs on the host, and the eggs hatched at 5 d since oviposition. Larva lasted 5 to 7 d and pupa developed for 14 to 16 d. Parasitoid-host ratios had a significant impact on the parasitism rates, fecundity, emergence rates and sex ratios of offspring wasp, whereas showed no influence on parasitic processes and developmental duration. When the parasitoid-host ratios were 1:1, 1:2 and 1:3, the parasitism rates increased with the ratios, being 66.67%, 83.33% and 83.33%, respectively. The fecundity also increased with the ratios, with 16.0, 16.57 and 22.71, respectively. However, the emergence rates decreased with the ratios, being 83.55%, 80.30% and 60.90%, respectively. The number of females in offsprings was significantly higher than that of males. Parasitism rates of A.germari larvae as high as 71.43% and 67.78% were recorded in laboratory and field, respectively.

关 键 词：管氏肿腿蜂 桑天牛 蜂虫比 防治效果 

分 类 号：S476.3[农业科学—农业昆虫与害虫防治]