Ein naturgemäßes Verfahren zur Bekämpfung von Stechmücken (Diptera: Culicidae)1

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Abstract
A natural method for controlling mosquitoes (Diptera, Culicidae). The application of “poisonous substances” in pest control means a measure contradicting natural conditions. However, the conversion of the natural environment into a human environment — a process which cannot be stopped — would also have to be counted under this heading unless it will be possible to recall, or develop intentionally, measures for landscape development, for shaping the human environment as such that eventually will not have destructive but rather constructive effect, i.e. that take effect within the context of life. This means that the living conditions of the pests concerned will have to be designed to be less favourable for them while a sound landscape structure is maintained. For all long time, drainage has been considered as one of the most elegant measures to resolve mosquito problems. Drainage can be formed, however, only in situations where, due to human interference, the groundwater level has not yet decreased to a critical degree. And where could we still afford a reduction beyond the present level? The life of mosquitoes is closely interrelated with water levels in their habitat. Together with the hydrologic conditions of a given region which in turn depend on climate, a superordinate entity is formed. In this case, control of a mass development of mosquitoes as a pest that does not affect the environment, is achieved by a corresponding adjustment of hydrologie conditions. A uniform water supply to mosquito breeding areas and maintenance of an approximately constant water level over the year will eliminate the risk of a mass development of mosquitoes of the genus Aëdes meaning pests at our geographical latitude, because flooding (which cannot take place any more) will be required for the eggs deposited at dry sites; otherwise, the larvae which are aquatic could not hatch.

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