中国媒介生物学及控制杂志

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淡色库蚊的抗药性研究——Ⅰ.淡色库蚊幼虫对球形芽孢杆菌的抗性选育

苏斌; 王美秀   

  1. 中国预防医学科学院流行病学微生物学研究所 北京102206
  • 出版日期:1991-12-20 发布日期:1991-12-20

Studies on Insectcide-resistance in Culex Pipiens Pallens——Ⅰ. Selection for Resistance to Bacillus sphaericus C3-41 in Laboratory Population of the Mosquito Culex pipiens pallens

Su Bin;Wang Meixiu   

  1. Institute of Epidemiology and Microbiology,Chinese Academy of preventive Medicine
  • Online:1991-12-20 Published:1991-12-20

摘要: 本实验在温度26±1℃等综合条件下,选用实验室多年驯化饲养的敏感淡色库蚊Ⅲ~Ⅳ龄幼虫,对球形芽孢杆菌C3-41进行抗性选育。在近LC50浓度的选择压力作用下,共选育了18个世代。结果发现,随着选育世代的增加,各世代LC50值呈明显上升趋势,其最大值F14代LC50值为0.1310ppm,较之对照组升高11.9倍;F18代LC50值为0.1172ppm,较之对心组升高10.9倍。结果提示,经选育的淡色库蚊可能存在着对球形芽孢杆菌C3-14的抗性。

关键词: 抗性选育, 球形芽孢杆菌, 淡色库蚊

Abstract: Resistance to Bacillus sphaericus has been presumed to be unlikely to occur. In this study it was found that Culex pipieas pallens, a suseeptible laboratory strain, can develop resistance to the insecticide through after 18 generation of LC50 selection pressure. The highest degree of developed resistance, based on the ratio of LC50 values of selected and unselected strain, was about 11.9-fold.