Mariappan T, Amalraj D D, Doss P S, Sahu S S, Jambulingam P, Somachary N, Reddy C M, Kalyanasundaram M, Das P K
Vector Control Research Centre (ICMR), Pondicherry.
Indian J Med Res. 1999 Oct;110:128-32.
Spicbiomoss, an aqueous suspension formulation of Bacillus sphaericus was evaluated for its efficacy against immatures of Culex quinquefasciatus at the application rate of 120 l/ha in cement tanks, cesspits and drains in Pondicherry and in drains in Kochi, Kerala. The formulation was also tested against anophelines (Anopheles fluviatilis and An. culicifacies) breeding in stream pools in Malkangiri district, Orissa. In cement tanks and cesspits more than 80 per cent reduction in immature density was observed for a period of 6-13 days (mean 9.8 +/- 1.25 days) and 3-8 days (mean 5.2 +/- 0.7 days) respectively. The same level of reduction was found to last for 1-4 days (mean 2.2 +/- 0.52 days) in drains in Pondicherry and 2-9 days (mean 4.8 +/- 1.17 days) in Kochi. In bunded stream pools 40-79 per cent reduction in immature density of Anopheles was obtained for an average period of 1-7 (mean 3.83 +/- 0.98) days. There was no improvement in the efficacy of the formulation against anophelines even at the higher application rate (240 l/ha). Thus, Spicbiomoss can be used against Cx. quinquefasciatus in an integrated vector management programme.
球形芽孢杆菌水悬浮剂Spicbiomoss在本地治里的水泥池、污水坑和排水沟以及喀拉拉邦科钦的排水沟中，以120升/公顷的施用量对致倦库蚊幼虫进行了药效评估。该制剂还针对奥里萨邦马尔康吉里区溪流池塘中滋生的按蚊（溪流按蚊和库氏按蚊）进行了测试。在水泥池和污水坑中，幼虫密度分别在6 - 13天（平均9.8 ± 1.25天）和3 - 8天（平均5.2 ± 0.7天）内降低了80%以上。在本地治里的排水沟中，相同程度的减少持续了1 - 4天（平均2.2 ± 0.52天），在科钦的排水沟中持续了2 - 9天（平均4.8 ± 1.17天）。在筑堤的溪流池塘中，按蚊幼虫密度平均在1 - 7天（平均3.83 ± 0.98天）内降低了40% - 79%。即使在较高施用量（240升/公顷）下，该制剂对按蚊的药效也没有提高。因此，Spicbiomoss可用于综合病媒管理计划中防治致倦库蚊。
