Yap H H, Tan H T, Yahaya A M, Baba R, Chong N L
Vector Control Research Project, School of Biological Sciences, Universiti Sains Malaysia, Penang.
J Am Mosq Control Assoc. 1991 Mar;7(1):24-9.
Five formulations of Bacillus sphaericus (strain 2362) including aqueous suspension BSP 1, BSP 2, technical powder ABG 6184, corncob granules ABG 6185 (potencies 2 x 10(10), 2 x 10(7), 9.5 x 10(10), 5 x 10(10), 5 x 10(10) spore/g, respectively) and wettable powder ABG 6232 (1,000 BS ITU/mg) were tested against laboratory-cultured late third/early fourth instar larvae of Mansonia uniformis in floating screened cages in small plots at swampy ditches on Penang Island, Malaysia. Mean dosage/response values at 90% mortality levels were 6.93, 95.32, 1.45, 11.92 and 2.86 liters or kg per ha, respectively, for the formulations tested. There were practically no residual effects for the formulations tested with larvae introduced at 48, 96, and 168 h post-treatment. In trials of BSP 1, ABG 6184 and ABG 6185 (1 liter or 1 kg per ha) against immature Mansonia spp. in impounded paddy field ditches, improved efficacy and residual effects were obtained with mean reductions of 93.1, 91.9 and 80.4% at days 3, 7 and 14 posttreatment, respectively.
对球形芽孢杆菌（菌株2362）的五种制剂进行了测试，包括水悬浮液BSP 1、BSP 2、工业粉剂ABG 6184、玉米芯颗粒ABG 6185（效力分别为2×10¹⁰、2×10⁷、9.5×10¹⁰、5×10¹⁰、5×10¹⁰个孢子/克）和可湿性粉剂ABG 6232（1000 BS国际毒性单位/毫克），测试是在马来西亚槟城岛沼泽沟渠的小块土地上，置于漂浮的带筛网笼子里，针对实验室培养的致倦曼蚊晚三龄/早四龄幼虫进行的。对于所测试的制剂，在90%死亡率水平下的平均剂量/反应值分别为每公顷6.93、95.32、1.45、11.92和2.86升或千克。在处理后48、96和168小时引入幼虫的情况下，所测试的制剂几乎没有残留效果。在针对蓄水稻田沟渠中未成熟致倦曼蚊属幼虫进行的BSP 1、ABG 6184和ABG 6185（每公顷1升或1千克）试验中，获得了更好的效果和残留效果，处理后第3天、第7天和第14天的平均减少率分别为93.1%、91.9%和80.4%。
