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目的掌握宁波市白纹伊蚊种群密度指数变动规律及其影响因素,为登革热媒介防控提供依据。方法对宁波市不同生境的白纹伊蚊幼虫密度进行监测,对幼虫密度变动规律及其与气候、环境的关系进行分析。结果 2011年宁波市白纹伊蚊容器指数、房屋指数和布雷图指数分别为9.26%、8.88%和10.57,于8月达到密度高峰;永久性容器密度明显高于暂时性容器,且以水池、水缸最高;居民区密度明显高于公园、建筑工地、废品收购站,学校、医院等特殊单位最低。结论登革热媒介白纹伊蚊种群密度与季节消长规律由多方面影响因素综合作用所致。
Objective To understand the rule of variation of population density index of Aedes albopictus and its influencing factors in Ningbo so as to provide basis for prevention and control of dengue fever. Methods The density of Aedes albopictus larvae in different habitats of Ningbo City was monitored. The variation of larval density and its relationship with climate and environment were analyzed. Results In 2011, the Aedes albopictus index, housing index and Brettiler index of Ningbo were 9.26%, 8.88% and 10.57 respectively, reaching their peak in August. The density of permanent containers was significantly higher than that of temporary containers, Water tank highest; residential density was significantly higher than the park, construction sites, waste acquisition stations, schools, hospitals and other special units the lowest. Conclusion Dengue fever vector Aedes albopictus population density and the law of seasonal fluctuation is caused by a combination of various factors.