H. Jinguji, Y. Fujiwara, K. Ohtsu, Moono Shin, M. Morimoto
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引用次数: 1
摘要
由于白纹伊蚊是登革热的一种病媒,日本输入性登革热病例的增加尤其令人关切。由于潜在的杀虫剂抗性和杀虫剂对非目标物种的影响,人们越来越重视害虫控制的替代方法。日本厚生劳动省(Ministry of Health, Labor and Welfare)建议在旧轮胎里放盐,作为控制蚊子的一种手段。然而,盐作为杀幼虫剂对伊蚊的有效性较差。白纹伊蚊目前尚不清楚。研究了氯化钠对伊蚊第一、四龄幼虫的急性毒性。蚊。急性毒性试验是根据世界卫生组织的准则进行的。e对伊蚊的敏感性。分别用0.25%、0.5%、0.75%、1.00%、1.25%和1.5% NaCl溶液检测白纹伊蚊幼虫。幼虫死亡率与NaCl浓度和暴露时间的增加有关。一级星Ae。白纹伊蚊幼虫对NaCl的敏感性高于4龄,1龄和4龄龄期72 h LC90值分别为0.49%和1.01%。结果表明,在生境中施用0.5% NaCl处理3 d对白纹夜蛾有较好的防治效果。蚊
Acute toxicity of sodium chloride to first and fourth instar Aedes albopictus larvae
e increase in the number of imported cases of dengue fever in Japan is of particular concern as Aedes albopictus is a vector of dengue fever. Due to the potential for insecticide resistance and the impact of insecticides on non-target species, increased attention is being paid to alternative methods of pest control. Placing salt in used tires has been recommended by the Ministry of Health, Labor and Welfare in Japan as a means of controlling mosquitoes. However, the e ectiveness of salt as a larvicide against Ae. albopictus are currently unclear. is study examined the acute toxicity of sodium chloride against rst and fourth larval instars of Ae. albopictus. Acute toxicity tests were conducted according to World Health Organization guidelines. e susceptibility of Ae. albopictus larvae was tested against 0.25%, 0.5%, 0.75%, 1.00%, 1.25% and 1.5% NaCl solutions. Larval mortality was correlated with an increase in NaCl concentration and exposure duration. First instar Ae. albopictus larvae were more sensitive to NaCl than fourth instar, and 72-h LC90 values for rst and fourth larval instars were 0.49% and 1.01% NaCl, respectively. Our results suggest that the application of 0.5% NaCl to a habitat for 3 days is e ective for Ae. albopictus