灵武市鼠疫自然疫源地鼠情监测及干预性灭鼠效果评价

Surveillance of rodents and evaluation on interventional rodent control in plague natural foci in Lingwu City

目的探讨宁夏回族自治区灵武市长爪沙鼠鼠疫自然疫源地鼠情监测,以及干预性灭鼠措施对鼠疫自然疫源地的影响。方法长爪沙鼠鼠情监测采取一日弓形夹法,并结合当地实际情况采取预警及干预性灭鼠措施,灭鼠药选用抗凝血剂大隆,毒饵浓度0.005%,采用洞群投药方式。结果平均投毒饵约9.9 kg/hm2,15d后灭效达97.0%以上,长爪沙鼠平均密度从灭鼠前的15.4只/hm2下降至灭鼠后的0.5只/hm2。结论春季采用浓度0.005%大隆毒饵可迅速降低长爪沙鼠鼠疫疫源地主要宿主密度,降低鼠间鼠疫流行的风险。

Objective To explore surveillance of rodents in gerbil plague natural foci in Lingwu City and effect of interventional rodent control in the foci.Methods The population density of rodent was monitored by 24-hour bow-clip.Precaution and interventional rodent control were taken according to the local condition.Anticoagulant rodenticides Dalong was selected with bait concentration of 0.005% by medication in caves.Results The baits was administrated about 9.9 kg/hm^2 averagely,with the efficacy over 97.0% after 15 days.The average density of gerbils decreased from 15.4 gerbils/ hm^2 before administration to 0.5 gerbils/hm^2 after the medication.Conclusions Brodifacoum bait of concentration 0.005% can rapidly reduce the main host density of gerbil,so as to reduce the risk of plague epidemic in rodents in spring.