硫酰氟熏蒸4种媒介致死顺序与影响因素研究

    李金有1，王林1，李西标2，陈春田1，慈颖1，郭文静1，刘明杰2，孙薇3

    1.中国检验检疫科学研究院卫检所，北京 100123；2.烟台出入境检验检疫局；

    3.广州机场出入境检验检疫局

   摘要：目的研究硫酰氟对蚊、家蝇、蜚蠊和鼠熏蒸绝对致死顺序及温度、湿度等因素对熏蒸致死效果的影响，以指导实际应用。方法蚊、家蝇和蜚蠊每个浓度梯度选用50只供试成虫，小鼠、SD大鼠每个浓度梯度选用10只，熏蒸24h，进行连续观察，实时记录其死亡情况。固定硫酰氟的用量和熏蒸时间，调节环境温度、湿度，观察媒介的死亡情况。在相同的实验条件下，观察蚊、蜚蠊不同种致死量的差异。结果硫酰氟熏蒸蚊、家蝇、蜚蠊和鼠24h绝对致死顺序为：蚊（1.099 g/m3）<家蝇（1.520 g/m3）<蜚蠊（3.817g/m3）<小鼠（3.874 g/m3）<大鼠（5.122g/m3）。温度、湿度影响硫酰氟对4种媒介的熏蒸致死率。硫酰氟熏不同蚊种和不同蜚蠊种间致死量无明显差异。结论本研究结果对指导口岸处理集装箱个案化用药具有参考作用。

    关键词：硫酰氟;熏蒸;蚊;家蝇;蜚蠊;鼠

    中图分类号：R187　文献标识码：B

    Sequencing absolute lethal dose of Sulfuryl Fluoridefumigation against

    four vectors and its influencing factors

    LI Jin-you*,WANG Lin, LI Xi-biao, CHEN Chun-tian, CIYing, GUO Wen-jing, LIU Ming-jie, SUN Wei

    *Chinese Academy of Inspection and Quarantine,Beijing 100123,China

    Abstract:   Objective   To explore theabsolute lethal dose( LD100) sequence of Sulfuryl Fluoridefumigation against mosquitoes, flies, cockroachs, Kunming mice andrats  for the guidandance of practical application. Methods   The trial were carried out in a transparentsimulating container with 50 mosquitoes, flies, cockroachs and 10 Kunming mice, 10 SD rats in each dose group being fumigatedfor  24h. The influencing factors of  fumigatingdurations, temperature , humidity and different species ofmosquito, cockroach was performed to observe vectors absolutelethal dose.   Results   Absolute lethal dose(LD100Sequence) of sulfuryl fluoride against flies, mosquitoes,cockroachs, Kunming mice, SD rats were 1.099 g/m3 < 1.520g/m3< 3.817 g/m3<3.874 g/m3   <5.122 g/m3respectively. While different levels of temperature and humidity had influence on the lethal effect of Sulfuryl Fluoride, ithad no significant difference between different  species ofmosquito and cockroach.  Conclusion    The findingsis helpful for the individualized dosage selection whenuseingSulfuryl Fluoride fumigates containers with multiple vectorscoexisting.

    Key words:   Sulfuryl fluoride; Fumigation;Mosquito; Fly; Cockroach; Rat

    《中国国境卫生检疫杂志》2013年10月刊