Schmahl Günter, Klimpel Sven, Walldorf Volker, Al-Quraishy Saleh, Schumacher Bärbel, Jatzlau Antje, Mehlhorn Heinz
Institute of Zoomorphology, Cytology and Parasitology, Heinrich Heine University, 40225 Düsseldorf, Germany.
Parasitol Res. 2009 Mar;104(4):809-13. doi: 10.1007/s00436-008-1260-5. Epub 2008 Nov 18.
Deltamethrin (Butox 7.5, Versatrine)-treated hair of cattle and sheep were brought into contact for 15, 30, 60, or 120 s with freshly caught Culicoides specimens, which are the vectors of the Bluetongue virus. The hair was clipped off from the treated animal just above the claws-a region which is one of the predominant biting sites of the midges. Hair obtained on day 7, 14, 21, 28, or 35 after treatment were mingled with the Culicoides specimens for the given contact periods. After separation of the midge from the hair and placing them onto white filter paper in a petri dish, their fate was followed for the next hours by microscopic inspection. It was found that deltamethrin (in both formulations Butox, Versatrine) reaches for 35 days in such sufficient amounts in the hair of the legs to kill attacking specimens of Culicoides in reasonable short periods after very short contacts. The observed speed of kill and the deleting effects were so quick that the midges very probably would not bite before their death.
将用溴氰菊酯（Butox 7.5、Versatrine）处理过的牛和羊的毛发，与刚捕获的库蠓标本接触15、30、60或120秒，库蠓是蓝舌病毒的传播媒介。毛发是从经过处理的动物爪子上方剪下的，该区域是蠓的主要叮咬部位之一。在处理后第7、14、21、28或35天获得的毛发，在给定的接触时间内与库蠓标本混合。将蠓与毛发分离后，放在培养皿中的白色滤纸上，接下来的几个小时通过显微镜检查观察它们的情况。结果发现，溴氰菊酯（在Butox和Versatrine两种配方中）在腿部毛发中能以足够的量持续35天，在极短的接触后能在相当短的时间内杀死攻击的库蠓标本。观察到的杀灭速度和清除效果非常迅速，以至于蠓很可能在死亡前不会叮咬。
