Porcasi X, Catalá S S, Hrellac H, Scavuzzo M C, Gorla D E
Centro Regional de Investigaciones Científicas y Transferencia Tecnológica (CRILAR), Entre Ríos y Mendoza s/n. (5301) Anillaco, La Rioja, Argentina.
J Med Entomol. 2006 Sep;43(5):1060-7. doi: 10.1603/0022-2585(2006)43[1060:iorhbt]2.0.co;2.
The impact of control activities against Triatoma infestans (Klug) (Hemiptera: Reduviidae) in South America has a marked contrast within and outside the Gran Chaco region. Development of a geographic information system, as part of an improvement in control program activities, allowed analysis of the spatial pattern of house infestations by T. infestans before and after house spraying with deltamethrin in the San Martin Department (an arid Chaco region of central Argentina). The overall peridomestic infestation index decreased from 48.2 to 28.2% after insecticide application. House infestation was spatially clustered in regions with low or high infestation levels that were located east and southwest of the department, respectively. This pattern was detected both before and after the insecticide application. Three environmental variables calculated from a temporal series of MODIS imagery (average of night temperature, maximum of day temperature, and temporal variation of vegetation index) were capable of correctly discriminating 96% of the places belonging to either high or low house infestation observed after the insecticide application.
在南美洲，针对骚扰锥猎蝽（克鲁格）（半翅目：猎蝽科）开展的防控活动在大查科地区内外产生了显著差异。作为防控计划活动改进工作的一部分，地理信息系统的开发使得能够分析在圣马丁省（阿根廷中部干旱的查科地区）用溴氰菊酯对房屋进行喷洒前后，骚扰锥猎蝽在房屋中的空间分布模式。施用杀虫剂后，整个家栖区域的侵扰指数从48.2%降至28.2%。房屋侵扰在该省东部和西南部分别为低侵扰水平和高侵扰水平的区域呈空间聚集分布。在施用杀虫剂前后均检测到了这种模式。根据一系列MODIS影像（夜间温度平均值、白天最高温度以及植被指数的时间变化）计算得出的三个环境变量能够正确区分施用杀虫剂后观察到的96%的高房屋侵扰或低房屋侵扰区域。
