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按全国鼠类抗药性监测协作组规定的方法,以极阳县长沙乡为试点,1991年10~11月对22只褐家鼠(♂9,♀13)、1993年11~12月对24只褐家鼠(♂14,♀10)和14只黄胸鼠(♂8,♀6)进行了抗药性监测.结果显示,1991年褐家鼠平均致死剂量为9.63mg/kg,致死天数为4.5天,抗性发生率为零;1993年褐家鼠平均致死剂量为19.54mg/kg.致死无数为5.35天,存活鼠1只,存活剂量为27.8mg/kg,抗性发生率为4.17%。两年间致死剂量平均增加1倍,致死天数平均延长近1天。黄胸鼠平均致死剂量为143.81mg/kg,平均致死无数为8.43天,未发现抗性鼠。本文提示,使用抗凝血灭鼠剂达6年以上地区,应加强抗性监测,防止抗性鼠出现。
According to the method stipulated by the National Collaborative Group on Resistance Monitoring of Rodents, Changsha Township of Jiyang County was used as a pilot project. Twenty-two Rattus norvegicus (♂ 9, ♀ 13) from October to November in 1991 and 24 Rattus norvegicus (♂ 14, ♀ 10) and 14 Rattus flavipectus (♂ 8, ♀ 6) were tested for drug resistance. The results showed that the average lethal dose of Rattus norvegicus in 1991 was 9.63mg / kg, the lethal days was 4.5 days and the incidence of resistance was zero. In 1993, the average lethal dose of Rattus norvegicus was 19.54mg / kg. Countless deaths of 5.35 days, a surviving rat, the survival dose of 27.8mg / kg, the incidence of resistance was 4.17%. Two-year lethal dose increased by an average of 1, the average number of lethal days extended nearly 1 day. The average lethal dose of yellow rat was 143.81 mg / kg, the average lethal count was 8.43 days, and no resistant rat was found. This article suggests that the use of anticoagulant rodenticides for more than 6 years in areas should be strengthened resistance monitoring to prevent the emergence of resistant mice.