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淡色斧瓢虫(Axinoscymnus cardilobus)对烟粉虱(Bemisia tabaci)种群的控制作用
引用本文:黄振,任顺祥,姚松林.淡色斧瓢虫(Axinoscymnus cardilobus)对烟粉虱(Bemisia tabaci)种群的控制作用[J].生态学报,2008,28(7):3075-3081.
作者姓名:黄振  任顺祥  姚松林
作者单位:1. 华南农业大学生物防治教育部工程研究中心,资环学院,广州510642
2. 华南农业大学生物防治教育部工程研究中心,资环学院,广州510642;贵州科学院生物研究所,贵阳550009
基金项目:国家"973"重大科技资助项目
摘    要:研究了大田笼罩条件下释放淡色斧瓢虫(Axinoscymnus cardilobus)对变叶木上烟粉虱种群的控制作用.每株释放1对淡色斧瓢虫对不同密度烟粉虱种群的控制效果差异显著.瓢虫和烟粉虱以1∶20比例释放对烟粉虱的防治效果较差,以1∶80比例释放对烟粉虱的防治效果不稳定、总体上看对烟粉虱的种群几乎没有控制效果;而以1∶40的比例释放的防治效果较好、较稳定,防效为35%~95%.释放不同数量的淡色斧瓢虫对同一密度烟粉虱种群的防治效果也差异显著.7周内在1∶40、3∶40、5∶40处理区,瓢虫对烟粉虱种群的防治效果分别为35%~95%、46%~90%和50%~98%.从经济学和生态学的角度综合考虑,瓢虫和烟粉虱以3∶40比例释放比较适宜.

关 键 词:淡色斧瓢虫  烟粉虱  种群控制  释放比例
收稿时间:2007/12/14 0:00:00
修稿时间:2008/4/22 0:00:00

Population control of Axinoscymnus cardilobus to Bemisia tabaci
Abstract:The population control of Axinoscymnus cardilobus Pang and Ren (Coleoptera: Coccinellidae) to Bemisia tabaci (Genadius) (Homoptera: Aleyrodidae) on Codiaeum variegatum L. was studied in cages under field condition. The control effects of B. tabaci differed significantly when a pair of adult of A. cardilobus was released against different population densities of B. tabaci. A. cardilobus did not give a satisfactory control to B. tabaci at releasing rate of 1 pair beetle: 20 pairs whitefly. Generally it was very difficult to control B. tabaci population when the beetle and whitefly were released at a ratio of 1:80. Effective control was observed with stable values at range of 35%-95% when A. cardilobus and B. tabaci were released at the ratio of 1:40. Meanwhile, the control effect of B. tabaci was significantly different when different rates of A. cardilobus were released against the same population density of B. tabaci. In case of 1:40, 3:40 and 5:40 ratios, the control effects of B. tabaci were recorded at ranges of 35%-95%, 46%-90% and 50%-98%, respectively. Therefore, the most suitable ratio of predator/prey to consider when control B. tabaci was 3:40 according to the principle of economics and ecology.
Keywords:Axinoscymnus cardilobus  Bemisia tabaci  population control  release rate
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