Faiman R, Cuño R, Warburg A
Department of Parasitology, The Kuvin Centre for the Study of Infectious and Tropical Diseases, The Institute for Medical Research Israel Canada, The Hebrew University, Hadassah Medical School, The Hebrew University of Jerusalem, Jerusalem 91120, Israel.
J Med Entomol. 2009 Jul;46(4):820-31. doi: 10.1603/033.046.0412.
Insecticide-treated vertical net barriers were used to intercept foraging sand flies. Two different nets were draped on fenced enclosures (10 by 10 m; 2 m high) in the central Jordan Valley. One enclosure was draped with a deltamethrin-impregnated net (PermaNet, 225 holes/in2). The holes of this net are sufficiently large to allow sand flies to pass through but not without coming in close contact with the mesh. The other enclosure was covered with SpiderNet+ (1,240 holes/in2) and sprayed with beta-cyfluthrin. Sand flies were captured inside and outside the enclosures before and after draping with the nets using CO2-baited CDC traps or CDC light traps. Both barrier types exhibited > 90% efficacy in blocking sand flies from entering the enclosures (P < 0.01). The Spider-Net+ exhibited high efficiency even before being sprayed with insecticide because the small mesh size physically prevented flies from passing through. In Ma'ale Adumim, a 60-m-long, 2-m-high PermaNet barrier was erected to intercept sand flies approaching houses from their natural habitats. Sand flies were monitored on all sides of the barrier using CO2-baited CDC traps or CDC light traps. Results showed a 60% reduction in the mean number of sand flies trapped behind the net compared with the untreated areas adjacent to it (P < 0.05). Integrated vector control campaigns for reducing the burden of sand fly bites should consider vertical fine-mesh nets to reduce the numbers of sand flies arriving at inhabited areas.
使用经杀虫剂处理的垂直网屏障拦截觅食的白蛉。在约旦河谷中部，将两种不同的网覆盖在围栏围场（10×10米；高2米）上。一个围场覆盖有溴氰菊酯浸渍网（PermaNet，每平方英寸225个孔）。该网的孔足够大，可让白蛉通过，但白蛉必须紧密接触网眼。另一个围场覆盖有SpiderNet+（每平方英寸1240个孔）并喷洒了高效氟氯氰菊酯。在覆盖网之前和之后，使用二氧化碳诱饵的疾控中心诱捕器或疾控中心灯光诱捕器在围场内外捕获白蛉。两种屏障类型在阻止白蛉进入围场方面均表现出>90%的功效（P<0.01）。Spider-Net+即使在喷洒杀虫剂之前也表现出高效率，因为其小网眼尺寸从物理上阻止了苍蝇通过。在马阿勒阿杜明，竖起了一道60米长、2米高的PermaNet屏障，以拦截从其自然栖息地接近房屋的白蛉。使用二氧化碳诱饵的疾控中心诱捕器或疾控中心灯光诱捕器在屏障的所有侧面监测白蛉。结果显示，与相邻的未处理区域相比，网后捕获的白蛉平均数量减少了60%（P<0.05）。为减轻白蛉叮咬负担而开展的综合病媒控制活动应考虑使用垂直细网眼蚊帐，以减少到达居民区的白蛉数量。
