%0 Journal Article
%T Impacts of Beauveria bassiana on life parameters and control efficiency of Aphidius gifuensis<br>球孢白僵菌对烟蚜茧蜂生命参数及控害效果的影响
%A LI Tao
%A LIU Ying-Hong
%A LI Hui-Yun
%A ZHANG Yong-Jun
%A <br>李涛
%A 刘映红
%A 李会云
%A 张永军
%J 微生物学报
%D 2007
%I 
%X Impacts of Beauveria bassiana on life parameters and control efficiency of Aphidius gifuensis were assessed in laboratory. The groups of aphids were sprayed with B. bassiana at the dose of 1900 conidia /mm2 at different stages of parasitism, and both mycosis infection rate or mummification rate of Myzus persicae and emergence rate of A. gifuensis from mummified aphids were recorded. The results suggested that mycosis in treated aphids or mummies, as well as adult emergence of A. gifuensis was significantly affected, varying with inoculation time of the fungal spores. Compared to the control spraying with 0.05% ( v/v) Tween-80 only, fungal inoculation at 1 day before, the same day and 3 days after A. gifuensis parasitization, caused about 59.6%, 56.2% and 34.8% aphids being infected, and reduced mummification rate by 94%, 59% and 47% and emergence rate of mummified aphids by 83%, 54% and 49%, respectively. However, spraying B. bassiana at 5 or 7 days after A. gifuensis parasitization, little impaction on mummification and emergence of A. gifuensis from mummified aphids were observed, yet mycosis infection rate was reduced to less than 8.2%. The fungal infection was almost undetected in mummified aphids at 5 or 7 days after A. gifuensis parasitization. When A. gifuensis adults ware sprayed with the fungal conidia, their life-span was shortened about 4 days as compared with control, and approximately 81.8% parasitized cadavers were infected by B. bassiana. The parasitic rate of A. gifuensis adults sprayed with the fungal conidia was not significantly affected, but the survival duration of them in parasitized aphids was shortened by 27.8%.
%K entomopathogenic fungi
%K aphids
%K parasitoid<br>昆虫病原真菌，蚜虫，寄生蜂
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=90BA3D13E7F3BC869AC96FB3DA594E3FE34FBF7B8BC0E591&jid=A3C6BA55AB623B90FA9104CFFC826F3C&aid=6BEC61FBE59DD80C2DC69085FE9463E3&yid=A732AF04DDA03BB3&vid=96C778EE049EE47D&iid=38B194292C032A66&sid=DDEED1BDDBFAA8A7&eid=AC2617B68B137D9D&journal_id=0001-6209&journal_name=微生物学报&referenced_num=0&reference_num=0