球孢白僵菌菌株对平菇厉眼蕈蚊的室内毒力  

Virulence of Beauveria bassiana to Lycoriella pleuroti in the Laboratory

作　　者：张宏瑞[1] 沈登荣[1] 袁盛勇[2] 张雪梅[2] 张陶 李正跃[1] 

机构地区：[1]云南农业大学植物保护学院,云南昆明650201 [2]红河学院,云南蒙自661100 [3]昆明食用菌研究所,云南昆明650223

出　　处：《中国食用菌》2010年第6期55-57,共3页Edible Fungi of China

基　　金：云南省科委青年基金项目(2005C0024Q);云南省教育厅青年基金项目(5Y0189B)

摘　　要：利用球孢白僵菌MZ050724菌株株5种孢子悬浮液浓度(3.6×104个·mL-1～3.6×108个·mL-1),对平菇厉眼蕈蚊(Bradysia difformis)成虫、幼虫和蛹进行室内毒力测定。结果表明该菌株对异平菇厉眼蕈蚊具有较强致病力。孢子浓度3.6×108个·mL-1可造成大量平菇厉眼蕈蚊感染致死,其成虫、幼虫和蛹的累计校正死亡率分别为87.31%、92.93%和70.12%,成虫、幼虫和蛹第7天的LC50分别是2.865×105个·mL-1、2.685×105个·mL-1和9.063×105个·mL-1,而在浓度3.6×108个·mL-1时平菇厉眼蕈蚊成虫、幼虫和蛹的LT50分别为4.36 d、4.06 d和5.10 d。The virulence of Beauveria bassiana MZ050724 to Lycoriella pleuroti under five different concentrations from 3.6×104 spores·mL-1 to 3.6×108 spores·mL-1 was determined.The results indicated that the virulence of B.bassiana MZ050724 to adults and larvae of L.pleuroti was high.The mortality rate of adults,larvae and pupa were 87.31%,92.93% and 70.12% respectively,under the concentration of 3.6×108 spores·mL-1.On the 7th day,the LC50 of adults and larvae was 2.865×105 spores·mL-1,and the LC50 of pupae was 9.063×105 spores·mL-1.Under concentrations 3.6×108 spores·mL-1,the LT50 of adults was 4.36 d,4.06 d and 5.10 d respectively.

关 键 词：球孢白僵菌 平菇厉眼蕈蚊 毒力 

分 类 号：S436.46[农业科学—农业昆虫与害虫防治]