Karch S, Asidi N, Manzambi Z M, Salaun J J
Institut National de Recherche Bio-Médicale (INRB), Miss. Coopération Francaise, Kinshasa, Zaíre.
J Am Mosq Control Assoc. 1992 Dec;8(4):376-80.
The microbial control of Anopheles gambiae and other mosquitoes with a granular formulation of Bacillus sphaericus (Vectolex) was evaluated in rice fields and swamps, located around the suburban region of Kingabwa-village in Kinshasa, Zaíre. Ten treatment cycles with 15-day intervals were carried out with the same application rate, 10 kg/ha, during the dry season (May to September 1991). The treatments reduced larval populations of An. gambiae by 98% after 48 h, but repetitive applications were required every 15 days to maintain control. The persistence of B. sphaericus spores was more apparent in rice fields than in swamps. A significant reduction in nuisance biting by Culex quinquefasciatus and Mansonia uniformis was observed. For An. gambiae, a decrease of 13.6% in human biting was noted during the post-treatment period. The entomological inoculation rate was reduced from 0.238 to 0.143. The efficacy of B. sphaericus does not appear to offer outstanding potential for control of An. gambiae in rice fields and swamps and seems to be limited due to different factors tied to ecology and natural conditions in the fields.
在扎伊尔金沙萨金加布瓦村郊区周围的稻田和沼泽地，对用球形芽孢杆菌颗粒制剂（Vectolex）控制冈比亚按蚊和其他蚊子进行了评估。在旱季（1991年5月至9月），以相同的施用量10千克/公顷进行了10个处理周期，间隔15天。处理后48小时，冈比亚按蚊幼虫数量减少了98%，但需要每15天重复施用一次以维持控制效果。球形芽孢杆菌孢子在稻田中的持久性比在沼泽地更明显。观察到致倦库蚊和同型曼蚊造成的骚扰性叮咬显著减少。对于冈比亚按蚊，在处理后的时期内，人类被叮咬的次数减少了13.6%。昆虫学接种率从0.238降至0.143。球形芽孢杆菌在稻田和沼泽地控制冈比亚按蚊方面似乎没有显著的潜力，并且由于与田间生态和自然条件相关的不同因素，其效果似乎受到限制。
