关键词: 鼠疫自然疫源地, 干预性灭鼠, 预警, 溴鼠灵

Abstract: Objective To investigate the application of interventional rodent control for monitoring and early warning in the natural foci of Meriones unguiculatus plague. Methods The population density of M. unguiculatus was monitored by 24 hour arch trap method and was predicted using the classic quantitative prediction formula for animals, and early warning was made in consideration of the local conditions. The anticoagulant brodifacoum was used as a rodenticide, and the poison bait with a brodifacoum concentration of 0.008% was put at the gerbil holes. Results On average, 10 kg of poison bait was applied per hectare; 14 days later, over 99% of gerbils were killed, and the mean population density of M. unguiculatus was decreased from 31 gerbils/hm2 to 0.25 gerbils/hm2. Conclusion In the high - risk areas of the natural foci of M. unguiculatus plague, the interventional rodent control measures using brodifacoum can effectively decrease the population density of main plague host, inhibiting the risk factors for plague outbreak among animals.

Key words: Natural foci of plague, Interventional rodent control, Early warning, Brodifacoum