亚致死浓度Bt对棉铃虫齿唇姬蜂寄生几率及生长发育的影响  

Effects of Sub-lethal Dose of Bt on the Parasitization and Development of Campoletis chlorideae Uchida

作　　者：孙长贵[1] 张青文[1] 徐静[1] 王因霞[1] 周明牂[1] 

机构地区：[1]中国农业大学植保系,北京100094

出　　处：《中国生物防治》2003年第3期106-110,共5页Chinese Journal of Biological Control

基　　金：国家"973"项目(G2000016209);国家科技攻关计划项目(2001BA507A 11 02)

摘　　要：在亚致死浓度下,研究了Bt对棉铃虫齿唇姬蜂寄生几率和生长发育的影响。结果表明:随着Bt浓度的增加,明显抑制了棉铃虫幼虫的生长,从而显著延长齿唇姬蜂适合寄生的时间;近似蜂幼虫和蜂成虫的体重随着Bt浓度的增加而下降,蜂成虫寿命随着Bt亚致死浓度的增加而缩短,而齿唇姬蜂卵和幼虫期随着Bt浓度的增加而延长;Bt对齿唇姬蜂茧期和茧重也有一定的影响,但没有一致的趋势。Effects of sub lethal dose of Bt on parasitization, growth and development of Campoletis chlorideae Uchida were studied in laboratory. The results showed that Bt could significantly extend the vulnerable parasitizing period of Helicoverpa armigera (Hübner) larvae by C. chlorideae. With increasing of sub lethal dose of Bt, the approximate larval pupal and adult weights of the parasitoid were decreasing. Longevity of the adult parasitoid was shortened, but developmental period of egg and larvae of the parasitoid was extending. Sub lethal dose of Bt also had some effect on the period and weight of cocoon of the parasitoid.

关 键 词：亚致死浓度 齿唇姬蜂 寄生几率 生长发育 苏云金杆菌 棉铃虫 寄生蜂 天敌 

分 类 号：S435.622.3[农业科学—农业昆虫与害虫防治] S476.3[农业科学—植物保护]