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目的了解北京顺义温榆河流域蚊虫密度及分布情况,为顺义区虫媒传染病防控提供本底资料。方法2015年5-10月在温榆河顺义段选取4个监测点,采用国家标准GB/23797-2009中的二氧化碳诱蚊灯法,通过描述性研究方法对蚊密度分布情况进行流行病学分析。结果共捕获蚊虫25 999只,包括淡色库蚊、白纹伊蚊、中华按蚊、三带喙库蚊、二带喙库蚊、刺扰伊蚊。年平均密度为45.14只/(灯·h)。总体密度最高峰出现在7月,8月明显回落后,9月出现小高峰,10月明显减少。其中监测点1密度最高。蚊虫携带登革热、疟原虫、乙脑情况为阴性。结论蚊密度明显高于北京市常规监测数据,白纹伊蚊、三带喙库蚊、中华按蚊所占比例与北京市常规监测有明显不同,蚊虫分布情况与北京市常规监测略有不同,这些可能与温榆河顺义段自然生境复杂,远离城市密集人群,接近首都机场口岸等因素相关。
Objective To understand the density and distribution of mosquitoes in Wenyu River basin in Shunyi, Beijing, and to provide background information for prevention and control of insect-borne diseases in Shunyi District. Methods From May to October in 2015, 4 monitoring sites were selected in Shunyi section of Wenyu River. The carbon mosquito lamp method of national standard GB / 23797-2009 was used to carry out epidemiological analysis on mosquito density distribution by descriptive method. Results A total of 25 999 mosquitoes were captured, including Culex pipiens pallens, Aedes albopictus, Anopheles sinensis, Culex tritaeniorhynchus, Culex tritaeniorhynchus and Aedes albopictus. The average annual density of 45.14 / (lamp · h). The peak of overall density appeared in July and August after a clear drop, the small peak appeared in September and obviously decreased in October. Among them, monitoring point 1 has the highest density. Mosquitoes carry dengue fever, Plasmodium, JE is negative. Conclusion The mosquito density was significantly higher than that of routine monitoring data in Beijing. The proportions of Aedes albopictus, Culex tritaeniorhynchus and Anopheles sinensis were significantly different from routine monitoring in Beijing. The distribution of mosquitoes was slightly different from that of Beijing routine monitoring, These may be related to the complex natural habitats of Wenyu River Shunyi, away from densely populated urban areas and close to the capital airport port.