墨胸胡蜂的生物学特性及“毁巢灵”的防治效果

墨胸胡蜂(Vespa nigrithorax Buysson)在福州一年发生4—5代,3—5月是越冬蜂王开始单独营巢、产卵、哺育第1子代的时期,为防治的最佳期,8—9月(第3代)开始出现雄蜂,越冬王被交替,巢内开始多工产卵繁殖,群势逐日壮大.10—12月(第3—4代)群势趋于高峰期,并于巢上方出现多个巢口.墨胸胡蜂卵期5d,幼虫期9d,蛹期13d,成虫寿命3个月以上。1月底授精雌蜂开始离巢集结越冬,越冬期2个月左右,以“毁巢灵”处理侵袭蜜蜂的胡蜂,可达到毁巢效果,毁巢效果与用药时期、胡蜂巢大小、巢口数日和位置以及敷药蜂归巢数密切相关.

The Biological Characteristics of Vespa nignithorax and the Control Efeect of "Huichaolin"

There arc four to five gererations of Vespa nigrithorax buysson per year. It's a best control period in March to May as at this time over wintered gueen began to build nest, lay eggs and rear the first offspring. Drones will be produced and over wintered gueen superseded in August to September when multiple queens begin egg laying within nest and colony strenth increases gradually. In October to December, there exist a number of nest entrances over the nest and colony strength rcachs to a peak. The span of egg, lorva, pupa and adult is five, nine, thirteen and ninty-eight days long, respectively. Fertilized females will abscond nest and congregate to over winter at the end of January for two months. The wasp's nest could be destroyed completely with the powder "Huichaolin" smearing wasps preying upon honey bee. The effect of destroying nest is closely related to the due time of treatment, nest size, the number and location of nest and the number of returning smeared wasps.