山东省重要农区粉虱寄生蜂调查及初步研究

摘要

为了解山东省田间粉虱寄生蜂情况，于2012年对山东省6市9个地点作物上的粉虱寄生蜂进行了调查，并对其种类及生物学特性进行了初步研究。结果表明：仅在青岛地区（ ChY4）发现温室白粉虱Tri－aleurodes vaporariorum（ Westwood ）被寄生蜂寄生的现象，通过分子鉴定该寄生蜂为丽蚜小蜂Encarsia formosa （Gahan）。进一步研究证明本地区丽蚜小蜂可以寄生烟粉虱（寄生率约23．33％），丽蚜小蜂均被共生菌Wol－bachia感染。研究结果对于今后山东省粉虱天敌资源的保护利用等具有指导意义。%To determine the parasitism status of endoparasitoids in field in Shandong Province ,the para-sitoids species and biological characteristics were investigated from nine locations in six cities of Shandong Province in 2012 .The results showed that edoparasitoids were only detected in Trialeurodes vaporariorum (Westwood)in Qingdao area (code ChY4).The endoparasitoids were identified as Encarsia formosa(Gahan) based on molecular marker .Further study found that E.formosa could also parasitize Bemisia tabaci with par-asitism rate of 23.33%.In addition,Wolbachia was detected within all E.formosa individuals.These results would be significant to the biological control of whitefly in Shandong Province .