寄生小菜蛾的赤眼蜂蜂种选择Ⅰ.几种赤眼蜂对小菜蛾的寄生潜能评价  

Selection of Effective Species of Trichogramma Egg Parasitoids of Diamondback Moth:I.Laboratory Evaluation on the Parasitizating Capacity of Several Trichogramma and Trichogrammatoidea Species

作　　者：何余容[1] 吕利华[2] 庞雄飞[1] 

机构地区：[1]华南农业大学昆虫生态研究室,广州510642 [2]广东省农科院植保所,广州510640

出　　处：《中国生物防治》2001年第1期6-9,共4页Chinese Journal of Biological Control

基　　金：国家自然科学基金! (39870 439)和 (39870 44 1)资助项目

摘　　要：通过组建不同来源的几种赤眼蜂在小菜蛾卵上的实验种群生命表结果表明 ,拟澳洲赤眼蜂和短管赤眼蜂对小菜蛾卵的寄生能力最强 ,内禀增长率分别为 0 .4331和 0 .3896 ,是防治小菜蛾的优良蜂种。卷蛾分索赤眼蜂对小菜蛾卵也具有较强的寄生能力 ,内禀增长率为0 .30 76 ,可进一步进行室内繁殖和田间试验。特氏赤眼蜂和新发现的碧岭赤眼蜂对小菜蛾的寄生能力较差 ,其内禀增长率只为 0 .2 0 81和 0 .1 36 2 。Experimental population life tables of 5 Trichogramma and Trichogramma toidea species of different origin on the eggs of diamondback moth, Plutella xylostella (L), were constructed in the laboratory in order to select more effective species against DBM The results showed that among 5 species, T confusum (from Guangdong, China) and T pretiosum (from USA) had the highest intrinsic rate of natural increase (r m) because of a higher fecundity, a longer longevity and a shorter developmental period on the eggs of DBM, therefore both of them was considered as the most suitable species for control of DBM Trichogrammatoidea bactrae (from Australia), although its higher preference to eggs of DBM, had a lower r m due to the shorter longevity and a higher male ratio on the eggs of DBM T trjapitzini (from former USSR) and T bilingensis had a lower preference to the eggs of DBM, therefore, was not suitable candidates for controlling DBM in the field T confusum and T pretiosum were considered as the most suitable candidates for inundative release to control DBM because of their parasitization potential on the target pest

关 键 词：小菜蛾 赤眼蜂 分索赤眼蜂 实验种群生命表 寄生潜能 蔬菜害虫 天敌 

分 类 号：S476.3[农业科学—农业昆虫与害虫防治]