摘要
目的了解石渠县青海田鼠鼠疫自然疫源地青海田鼠巢蚤构成及其变化,为鼠疫防治提供科学依据。方法于2011-2012年的5~9月期间每月挖取青海田鼠巢6~12个,对巢穴蚤进行分类鉴定。计算巢蚤指数、染蚤率、Shannon多样性指数、Pielou均匀度指数和Simpson优势度指数。结果鉴定蚤3175匹、属3科8种,染蚤率为100%,蚤指数为41.59,多样性指数平均值0.696;均匀度指数平均值0.887;优势度指数平均值0.524。结论石渠县青海田鼠巢穴染蚤率和蚤指数高,巢蚤优势种为细钩盖蚤和直缘双蚤指名亚种,保存和传播鼠疫的潜在风险较高,应加强疫源地鼠疫监测力度和灭鼠灭蚤工作,防止人间鼠疫发生。
Objective To investigate the formation and change of nest fleas of Microtus fuscus in natural focus of plague in Shiqu county, and to provide a scientific basis for prevention and control of the plague. Methods Six to twelve nests of microtus fuscus were sampled each month during May to Sept. in 2011 and 2012. The nest fleas were separated and identified, and the indexes of nest fleas, infection rate and Shannon diversity index were also calculated. Results A total of 3175 fleas were separated and identified, belonging to 3 families and 8 species. The infection rate of nest fleas was 100%, the index of nest flea was 41.59, the diversity index of nest fleas was 0. 696, the evenness index was 0. 887 and dominance index was 0. 524. Conclusion The C. Sparsilis and A. tutatuta is the dominant species in nest fleas; the rate and the index of nest flea are both high. The potential risk of plague preserving and spreading is relatively high, and thus more efforts should be made to monitor the plague and depulization for prevention of plague in human.
出处
《预防医学情报杂志》
CAS
2015年第3期229-231,共3页
Journal of Preventive Medicine Information
关键词
石渠县
鼠疫自然疫源地
巢蚤
Shiqu county
natural focus of plague
nest flea
