Chinese Journal of Vector Biology and Control ›› 2021, Vol. 32 ›› Issue (6): 772-778.DOI: 10.11853/j.issn.1003.8280.2021.06.022

• Control Experiment • Previous Articles     Next Articles

Spatiotemporal variation of Aedes albopictus density treated by hedgerow spraying

ZHU Wei1, LIU Xiang-yu1, ZHOU Yi-bin2   

  1. 1. Department of Infection and Vector Control, Shanghai Xuhui District Center for Disease Control and Prevention, Shanghai 200237, China;
    2. Division of Infectious Diseases Control and Prevention, Shanghai Municipal Center for Disease Control and Prevention, Shanghai 200336, China
  • Received:2021-02-18 Online:2021-12-20 Published:2021-12-15
  • Supported by:
    Supported by the Medical Research Project of Shanghai Xuhui District (No. SHXH201944) and the Scientific Research Project of Shanghai Municipal Health Commission (No. 201940350)


朱伟1, 刘翔宇1, 周毅彬2   

  1. 1. 上海市徐汇区疾病预防控制中心消毒病媒科, 上海 200237;
    2. 上海市疾病预防控制中心传染病防治所, 上海 200336
  • 通讯作者: 周毅彬,
  • 作者简介:朱伟,男,硕士,主管医师,主要从事病媒生物防制工作,
  • 基金资助:

Abstract: Objective To investigate the spatiotemporal effect of hedgerow spraying technique on the control of Aedes albopictus, and to provide a basis for formulating mosquito control strategies. Methods A science and education park and a residential area were selected from the central area of Shanghai as contrast area and control area,respectively. Hedgerow spraying was performed once a week for two consecutive weeks from July to September in 2020, and the density of Ae. albopictus was monitored once a week for nine consecutive weeks before and after spraying. Relative population index (RPI) was calculated to analyze the change in mosquito density in the experimental area. ArcGIS 10.8 software was used for spatial analysis; the global Moran's I index was used to perform the global spatial autocorrelation analysis; the kernel density method was used to estimate the spatial distribution of egg number; the standard deviation ellipse was used to analyze the location of surveillance sites and the spatial distribution direction of mean egg number. Results After the second time of hedgerow spraying, mosquito ovitrap index decreased from 72.22 to 16.67 and the RPI was 25.23 in the control area, and there was a change in the standard deviation ellipse of mosquito distribution in the contrast area. The global spatial autocorrelation peak radius (maximum Z value) of mean egg number distribution in a single surveillance site was 45 m, with a Moran's I index of 0.192 and a Z value of 5.848 (P<0.001), i.e., the spatial autocorrelation of mean egg number reached the maximum at the radius of 45 m. Conclusion After spraying once a week for two consecutive weeks, hedgerow spraying technique can effectively control Ae. albopictus. In order to avoid the influence of Ae. albopictus in the surrounding area, control measures should be implemented in the buffer area at least 45 m outside the experimental area to improve control efficiency.

Key words: Aedes albopictus, Hedgerow spraying technique, Mosquito ovitrap, Relative population index, Spatial distribution

摘要: 目的 研究绿篱喷洒技术控制白纹伊蚊的时空效果,为制定蚊虫防制策略提供依据。方法 2020年7-9月,在上海市中心城区选取1个科教园设为对照区,1个居民小区设为控制区,在控制区每周1次,连续2周实施绿篱喷洒,在喷洒前后每周1次、连续9周使用诱蚊诱卵器法于控制区和对照区进行白纹伊蚊密度监测,通过计算相对密度指数(RPI)分析控制区蚊密度变化情况,使用ArcGIS 10.8软件进行空间分析,通过全局Moran's I指数进行全局空间自相关分析,核密度分析方法估计卵粒数的密度空间分布,标准差椭圆分析监测点位置和平均卵粒数的空间分布方向。结果 在实施第2次绿篱喷洒后,控制区的诱蚊诱卵指数从72.22下降至16.67,RPI为25.23,对照区的蚊虫分布标准差椭圆方向发生变化;单个监测点平均卵粒数分布的全局空间自相关峰值半径(Z值最大)为45 m,Moran's I指数为0.192,Z值为5.848(P<0.001),平均卵粒数的空间自相关在半径45 m时达到最大值。结论 在每周喷洒1次、连续喷洒2周之后,绿篱喷洒技术对白纹伊蚊控制有效;为避免周边白纹伊蚊的影响,应在控制区域向外至少45 m的缓冲区域同时实施控制措施,以提高控制效率。

关键词: 白纹伊蚊, 绿篱喷洒技术, 诱蚊诱卵器, 相对密度指数, 空间分布

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