After two dry summers in a row, with significantly less mosquitoes in the exchange of humidity and heat this year was very mosquito-friendly, said the biologist of the German press Agency. "The harassment is regional but very different."

Where is strong rainfall caused the water levels of the waters are rising, speaks of plague, the researcher of a mosquito. Examples are the Or, but also the lake Starnberger see and the Ammersee in Bavaria.

From a plague, one speaks from about 20 mosquitoes per Minute

In Germany, home of the expert, according to over 50 species of mosquitoes. In the past two years were mostly house mosquitoes, which were about in rain barrels or puddles of their eggs. This summer, the so-called flooding, according to Werner mosquito boom.

In flood areas such as the Or the biologist per Minute registered a hint of more than 100 flood mosquitoes for receiving a blood meal. Of a plague, one can speak of approximately 20 mosquitoes per Minute. The Or led in the last few weeks of high water due to lots of rain, especially in southern Poland and the Czech Republic.

The water flow from the flooded areas and ditches in the floodplain forests and meadows not so fast, says Werner. There developed currently, mosquitoes are very good, the warm temperatures shortened their development time. Flood mosquitoes are very stechlustig, because they were under development pressure. According to the scientist, you need to suck in the shortest amount of time, blood, their eggs develop and then drop in order to allow over the summer, as many generations.

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mosquito Also invasive mosquitoes such as the tiger or the Asian Bush mosquito can spread

The biologist uses the high mosquito emergence for their research. So you want to examine in a comparative way, if any of the local mosquitoes to transfer to the same extent as immigrant mosquitoes such as the Asian tiger mosquito - pathogens. Further studies would be carried out at the Friedrich-Loeffler-Institute (FLI), Federal research Institute for animal health,.

invasive mosquitoes such as the tiger mosquito or the Asian Bush mosquito, which is widely used in Germany is relatively wide, know you well, what disease could transmit the agent to you, says Helge Kampen, from the Friedrich-Loeffler-Institut. Asian tiger mosquitoes are considered as Vectors of tropical pathogens such as Zika-, Chikungunya and Dengue Virus.

"Such knowledge, we lack actually still largely in the control of local mosquitoes," explains the scientist. This is due to the fact that the topic has been neglected. On the other, many of the local mosquitoes could not be bred. Now the Chance was here, with the variety of flood mosquitoes in laboratory infection experiments.

The biologist Werner compares currently faces, Or, the Spree, the Elbe, the Weser and the Rhine, to see what are the ecological niches to be colonized by invasive species. Populations of the Asian tiger mosquito, there is according to her, already in the Federal States of Bavaria, Baden Württemberg, Thüringen, and Hessen. The study will examine whether the animals migrate to other regions such as Berlin and Brandenburg.

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rob/dpa

Date Of Update: 28 July 2020, 09:27