麦蛾茧蜂对亚洲玉米螟幼虫寄生龄期的选择  

Host-stage Selection of Habrobracon hebetor (Say) to Larvae of Ostrinia furnacalis (Guenee)

作　　者：李瑭[1] 丛斌[1] 张海燕[1] 钱海涛[1] 

机构地区：[1]沈阳农业大学植物保护学院,沈阳110161

出　　处：《湖北农业科学》2009年第4期860-862,共3页Hubei Agricultural Sciences

基　　金：国家"十一五"科技支撑计划项目(2006BAD08A06)

摘　　要：研究了麦蛾茧蜂对亚洲玉米螟幼虫不同寄生龄期的选择及其子代的生长发育情况。结果表明,麦蛾茧蜂对亚洲玉米螟2～5龄幼虫均能不同程度的寄生,对4龄与5龄幼虫的寄生率(>50%)显著高于对3龄(35%)和2龄幼虫的寄生率(26%);子代寄生蜂寄生亚洲玉米螟2龄和3龄幼虫后不能结茧,寄生4龄幼虫的结茧率(4.0%)和羽化率(8.2%)均稍低于寄生5龄幼虫的结茧率(4.6%)和羽化率(8.9%),寄生4龄幼虫的发育历期长于寄生5龄幼虫;麦蛾茧蜂搜寻不同龄期寄主幼虫的时间也存在差异。The host-stage selection of Habrobracon hebetor （Say） to Ostriniafurnacalis （Guenee） and the growth of Hobro- bracon hebetor offspring were studied in this paper. The results showed that the 2-Sth instars of host larvae were susceptible to parasitization which there was the highest parasitization （〉50%） in 4-5th instars compared with 3rd （35%） instars and 2nd （26%） instars. In 2-3rd instars of host larvae, the pupation of parasitoid larva were not found. Parasitoid larvae pupated （4.0%） after egression and adults eclosed （8.2%） ,derived from eggs oviposited in 4th instar hosts, less than those from eggs oviposited in the fifth instar hosts （4.6% and 8.9% ）. The growth period of parasitoid larva in 4th instar hosts were longer than those in 5th instar. The selecting of different host-stage by Habrobracon hebetor （Say） was also observed.

关 键 词：麦蛾茧蜂 亚洲玉米螟 龄期选择 

分 类 号：S476.3[农业科学—农业昆虫与害虫防治] S435.132[农业科学—植物保护]