Barbazan P, Baldet T, Darriet F, Escaffre H, Djoda D H, Hougard J M
Antenne ORSTOM auprès du Centre Pasteur du Cameroun, Yaoundé, Cameroun.
J Am Mosq Control Assoc. 1997 Sep;13(3):263-9.
Two strategies were tested to control Culex quinquefasciatus with Bacillus sphaericus in Maroua (population 130,000), Cameroon. The treatment of all potential breeding sites (27,000) with B. sphaericus during the dry season caused up to a 90% reduction in the adult biting rate. Because of the short persistence of B. sphaericus and the occurrence of new breeding sites, unacceptable levels of adult biting rates were reached again in 5 months. In the second strategy, two treatments per year of the most productive breeding sites (10,000) stopped the biting rate increase during the rainy season. The results were only partially successful because of variations in B. sphaericus toxicity. The first treatment required 1,200 man-days of work vs. 200 for the simplified treatments. The density of breeding sites depends on the rainfall and the presence of a tap-water network. A sustained control program of Cx. quinquefasciatus will depend upon the dynamics of the principal breeding sites and an improved formulation of B. sphaericus.
在喀麦隆的马鲁阿（人口13万），人们测试了两种利用球形芽孢杆菌控制致倦库蚊的策略。在旱季，用球形芽孢杆菌处理所有潜在的滋生地（27000处），使成虫叮咬率降低了多达90%。由于球形芽孢杆菌的持效期短且出现了新的滋生地，5个月后成虫叮咬率又达到了不可接受的水平。在第二种策略中，每年对最易滋生的10000处滋生地进行两次处理，阻止了雨季期间叮咬率的上升。由于球形芽孢杆菌毒性的变化，结果仅部分成功。第一种处理方式需要1200个工作日，而简化处理方式只需200个工作日。滋生地的密度取决于降雨量和自来水网络的存在情况。致倦库蚊的持续控制计划将取决于主要滋生地的动态情况以及球形芽孢杆菌改进后的配方。
