环境因子对温室白粉虱携播侧多食跗线螨的影响

Studies on phoresy of the broad mite, Polyphagotarsonemus latus (Banks),by the greenhouse whitefly, Trialeurodes vaporariorum ,under different environmental conditions

侧多食跗线螨Polyphagotarsonemuslatus (Banks)能够附着在温室白粉虱Trialeurodesva porariorum胫跗节上进行远距离扩散 ,即携播。笼罩试验表明 :温室白粉虱对侧多食跗线螨的携播是它们在正常情况下普遍发生的一种现象 ,18～ 2 5℃ ,5 0 %～ 75 %RH是其发生的最适条件 ;高温 (32～ 39℃ )虽能加速携播 ,使得 1～ 2h达到携播高峰 ,但携播率低 ,白粉虱不易存活 ;光照强度对携播率没有显著影响。适温高湿有利于温室白粉虱携带多个跗线螨 ,随着螨密度的增加 ,温室白粉虱的携播率和携螨数明显增大。 85 %携播螨采取翘式附着 (呈 45°)。显微镜照片清晰显示 。

The broad mite, Polyphagotarsonemus latus (Banks),can stick to the greenhouse whitefly, Trialeurodes vaporariorum for long distance dispersal.Cage experiment revealed that the phoresy of P.latus by whitefly is their biological characteristics,not the stress response to adverse environment.The ANOVA analysis showed:18～25℃ and 50%～75% RH were suitable for the phoresy,which coincide with their favorable living condition.High temperatures (32～39℃)speeded up sticking,but rate of phoresy decreased ra...