Phonchevin T, Upatham E S, Phanthumachinda B, Prasittisuk C, Sukhapanth N
Southeast Asian J Trop Med Public Health. 1985 Jun;16(2):240-7.
The effects of two chemical compounds, cyromazin and methoprene, on the developmental stages of Anopheles dirus, Aedes aegypti and Culex quinquefasciatus were investigated under laboratory conditions, with the mean temperature of 24 degrees +/- 1 degree C and the relative humidity at 65-75%. Both compounds were tested against the second, third and fourth instar larvae. The concentrations of cyromazin used for An. dirus and Cx. quinquefasciatus ranged from 0.0008 to 0.5 mg/l; and for Ae. aegypti from 0.004 to 2.5 mg/l. The concentrations of methoprene used for An. dirus, Ae. aegypti and Cx. quinquefasciatus ranged from 0.00016 to 0.1 mg/l. The mortality rates were found to be relatively high in larval and pupal stages when treated with cyromazin and methoprene. The primary toxic effects of cyromazin were on the second stage larvae. The LC50 values for cyromazin on the second, third and fourth stage larvae were, respectively, 0.0027, 0.0042 and 0.0114 mg/l for An. dirus, and 0.1662, 0.2307 and 0.3005 mg/l for Ae. aegypti. Cx. quinquefasciatus was the most sensitive species to cyromazin with LC50 values for second, third and fourth stage larvae of 0.0015, 0.0068 and 0.0130 mg/l, respectively. The primary toxic effects of methoprene were in the fourth stage larvae. The LC50 values for methoprene on the second, third and fourth stage larvae were, respectively, 0.0110, 0.0041 and 0.0022 mg/l for An. dirus, and 0.0077, 0.0034 and 0.0025 mg/l for Ae. aegypti. Cx. quinquefasciatus was the most sensitive species to methoprene, with LC50 values for second, third and fourth stage larvae of 0.0013, 0.0008 and 0.0006 mg/l, respectively.(ABSTRACT TRUNCATED AT 250 WORDS)
在实验室条件下，研究了两种化合物灭蝇胺和烯虫酯对大劣按蚊、埃及伊蚊和致倦库蚊发育阶段的影响，平均温度为24摄氏度±1摄氏度，相对湿度为65%-75%。两种化合物均针对第二、第三和第四龄幼虫进行了测试。用于大劣按蚊和致倦库蚊的灭蝇胺浓度范围为0.0008至0.5毫克/升；用于埃及伊蚊的浓度范围为0.004至2.5毫克/升。用于大劣按蚊、埃及伊蚊和致倦库蚊的烯虫酯浓度范围为0.00016至0.1毫克/升。发现用灭蝇胺和烯虫酯处理后，幼虫和蛹期的死亡率相对较高。灭蝇胺的主要毒性作用于第二龄幼虫。灭蝇胺对大劣按蚊第二、第三和第四龄幼虫的LC50值分别为0.0027、0.0042和0.0114毫克/升，对埃及伊蚊分别为0.1662、0.2307和0.3005毫克/升。致倦库蚊是对灭蝇胺最敏感的物种，其第二、第三和第四龄幼虫的LC50值分别为0.0015、0.0068和0.0130毫克/升。烯虫酯的主要毒性作用于第四龄幼虫。烯虫酯对大劣按蚊第二、第三和第四龄幼虫的LC50值分别为0.0110、0.0041和so.0022毫克/升，对埃及伊蚊分别为0.0077、0.0034和0.0025毫克/升。致倦库蚊是对烯虫酯最敏感的物种，其第二、第三和第四龄幼虫的LC50值分别为0.0013、0.0008和0.0006毫克/升。（摘要截短为250字）
