›› 2009, Vol. 52 ›› Issue (3): 281-289.

• 研究论文 • 上一篇    下一篇


韩冬银, 刘奎, 张方平, 黄武仁, 张敬宝, 金启安, 符悦冠   

  • 出版日期:2009-04-14 发布日期:2009-03-20
  • 通讯作者: 符悦冠

Biological characteristics of the spiralling whitefly, Aleurodicus dispersus Russell (Homoptera: Aleyrodidae)

  • Online:2009-04-14 Published:2009-03-20

摘要: 螺旋粉虱Aleurodicus disperses Russell是一种新入侵海南的重要害虫。本文结合田间观察和室内实验, 对螺旋粉虱各虫态的形态特征及生物学特性进行了系统观察和研究。结果表明:螺旋粉虱世代的发育起点温度和有效积温分别为8.88℃和511.86日·度, 在海南一年可发生8~9代。在18~32℃恒温条件下, 螺旋粉虱世代发育历期为26.63~57.16 d, 其中卵期7.15~15.93 d, 1龄若虫期4.00~11.03 d, 2龄若虫期3.83~7.53 d, 3龄若虫期4.09~8.64 d, 拟蛹期7.56~14.03 d。在18~32℃条件下, 各虫态发育速率与温度呈抛物线关系, 但在18~28℃则为直线关系; 低温和高温都不利于其繁殖, 14℃恒温条件下无法完成世代发育。成虫不活跃, 活动有明显的规律性, 晴天活动多集中在上午, 阴天活动少, 雨天不活动。

关键词: 螺旋粉虱, 生物学特性, 形态, 发育历期, 发育起点温度, 有效积温, 生命表

Abstract: The spiralling whitefly, Aleurodicus dispersus Russell, is a newly destructive invasive pest in Hainan Island, China. The morphology and biology of the spiralling whitefly were studied systematically through observations and experiments both in fields and laboratory. The results showed that the developmental threshold and the effective accumulative temperature for whole generation were estimated to be 8.88℃ and 511.86 degree-days, respectively, and 8-9 generations could occur per year in Hainan Island. In the temperature range of 18℃ to 32℃, the developmental duration from egg to adult is 26.63 to 57.15 d (including that for egg 7.15-15.93 d, 1st instar nymph 4.00-11.03 d, 2nd instar 3.83-7.53 d, 3rd instar 4.09-8.64 d and 4th instar 7.56-14.03 d), but the whitefly failed to survive at 14℃. The temperature higher or lower than 28℃, however, displayed negative effects on the population increase of the whitely. The adults are normally active at dawn and dusk, especially at calm, uncloudy dawn (7:00 am) or in the cloudy morning (9:00 am), but mostly inactive in rainy day.

Key words: Spiralling whitefly (Aleurodicus dispersus), biological characteristics, morphology, developmental duration, developmental threshold, effective accumulative temperature, life table