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目的了解东阳市鼠疫历史疫区宿主动物的种群构成、变迁及数量分布情况,为鼠疫防治工作提供基础资料。方法采用笼夜法。对捕获的鼠类及捡获的蚤类进行鉴定;计算鼠染蚤率和蚤指数;采用间接血球凝集试验(IHA)检测鼠疫F1抗体;“四步”检验法进行鼠疫病原学活体培养。结果捕获鼠类动物1269只,隶属1目2科6属10种。褐家鼠(67.57%)为室内优势种,黑腹绒鼠(71.72%)为野外优势种,室内外鼠密度分别为1.42%和2.42%。在1197只鼠类动物中发现染蚤鼠10只,捡获蚤17匹,鼠体染蚤率0.84%,总蚤指数0.01。采集鼠血清1216份,经IHA检测均呈阴性,病原学活体培养1007份,未发现鼠疫菌。结论褐家鼠和黑腹绒鼠仍是东阳市室内外的主要鼠种,不等单蚤为主要蚤种,染蚤率和总蚤指数低于鼠疫控制标准警戒线,鼠疫F1抗体和病原学检测均呈阴性,目前未发现有鼠间鼠疫流行迹象。
Objective To understand the population composition, changes and quantitative distribution of host animals in the plague of Dongyang City for the purpose of providing basic information for the prevention and control of plague. Method using cage night method. The captured rodents and the fleas were seized; the rate of flea infection and flea index was calculated; the F1 antibody was tested by indirect hemagglutination test (IHA); the “four step” test . Results 1269 murine animals were captured, belonging to 1 order, 2 families, 6 genera and 10 species. Rattus norvegicus (67.57%) was the dominant species indoors, and black flock (71.72%) was the dominant species in the wild with indoor and outdoor mouse densities of 1.42% and 2.42%, respectively. In 1197 rats found 10 fleas, 17 fleas were seized flea flea rate of 0.84%, total flea index of 0.01. A total of 1216 serum samples were harvested and tested negative by IHA, and 1007 were cultured in the pathogen. No plague bacteria were found. Conclusions Rattus norvegicus and T.govskii are still the main indoor and outdoor rats in Dongyang City, ranging from single flea to main flea species, with the rate of flea infection and total flea index lower than the standard alert line of plague control. The plague F1 antibody and etiology Detection was negative, there is no evidence of plague epidemic in rats.