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The German Mosquito Control Association, in German Kommunale Aktionsgemeinschaft zur Bekämpfung der Schnakenplage (KABS) is an association founded in 1976, with its seat in Speyer (Germany), by 98 bodies (towns, parishes, counties including Baden-Wuerttemberg, 2013 figure) along the upper Rhine to combat the problem of gnats in the area. Gnat refers here to the biting midge rather than the mosquito. Of the 33 species found in the upper Rhine area over 80% are ''Aedimorphus vexans''. It is not uncommon to find 50 thousand Aedes eggs in a single square meter of river bank in a flood plain area. KABS employees carry out gnat control on a 300 km stretch of the Rhine between Bingen and Offenburg over an area of around six thousand square kilometers. There use exclusively protein produced by Bacillus thuringiensis israelensis (BTI). This work is carried out, depending on the current water levels, accessibility of the terrain and statutory requirements, either on foot or by helicopter. In both cases the biologically active ingredient, which is not allowed to contain living bacteria, is applied in areas of water where the larvae breed. The agent must then be ingested by the larvae, as only then is it activated and leads to a breakup of intestinal cells, and thus extremely selectively kills the organisms. == Distribution == The active substance is stirred with water and distributed with a backpack spray by workers on foot, or applied as an ice granulate from the air by helicopter. In 2007, 260 tons of the agent were spread by the two available helicopters and 250 helpers, on 84 action days of which 47 were supported by helicopter. This involved 33 thousand working hours and 270 thousand kilometers. The 400 thousand Euros this cost bring local residents a reduction of 99% in the gnat population compared to untreated areas. The time of application is critical for the efficiency of the treatment. Gnats lay their brood in hollows above the normal water level, and they are activated when flood levels are reached. Treatment must follow within a week. In addition, residents of the KABS areas are supplied with CULINEX tablets free of charge in order to treat smaller water sources such as water butts and garden ponds which do not contain fish. A single water butt can be a source of several hundred gnats. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「German Mosquito Control Association」の詳細全文を読む スポンサード リンク
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