2003年蒙洼蓄洪区鼠情监测及灭鼠效果观察

目的了解蓄洪区鼠患情况以及采取灭鼠措施防止灾区出血热发生流行。方法以夹夜法调查灾区鼠密度,取鼠血、鼠肺标本检测鼠对出血热病毒的感染率,用溴敌隆毒饵灭鼠控制鼠数量。结果蓄洪后室内外鼠密度分别为11.1%和8.9%,室外黑线姬鼠为优势种占82.4%,室内小家鼠为优势种占66.7%,室外还发现了鼠类天敌黄鼠狼和刺猬,室内鼠总感染率为0,室外鼠总感染率为31.25%,室外草垛灭鼠率为100%,室内灭鼠率为45.9%,2003年未发生出血热病例。结论2003年蓄洪区鼠密度低和鼠带毒率也低,较低的密度下难以获得较高的灭鼠率。

Rodent surveillance and control effect in flood areas in 2003

Objective To know rodent density for taking measure to prevent EHF in flooding areas.Methods Rodents were trapped with rodent clips.Blood or lung samples were taken to be tested for infective rate to EHF virus,and the baits made of 0.05% rodenticide for controlling population were applied in flooding areas.Results The density inside and outside flooding areas were 11.1% and 8.9% respectively,accounting for 82.4%.Apodemus agrarius Pallas was prevalent species outside.Mus musculus Linnaeus was prevalent species inside accounting for 66.7%.Natural enemies Mustela sibiricu Pallas and Einaceus europaeus Linnacus were caught in the areas.Rodent total infective rate inside was 0,outside of which was 31.25%.Around straw piles control effect was 100% and inside was 45.9%.There was no any case of EHF in flooding areas in 2003.Conclusion Rodent density was so low in flooding areas in 2003 that it was difficult to obtain higher control effect.