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Eching's mosquito plague is only a temporary phenomenon

2022-06-26T10:43:56.425Z


Eching's mosquito plague is only a temporary phenomenon Created: 06/26/2022, 12:34 p.m By: Dieter Roettig Eching is temporarily "stronghold for flood mosquitoes." On the other hand, they want to use the natural toxin BTI. In the private sector, traps are recommended that Dr. Silke Göttler explains to Mayor Siegfried Luge (left). On the right landscape ecologist Johann Schmidt. © Roettig Eching


Eching's mosquito plague is only a temporary phenomenon

Created: 06/26/2022, 12:34 p.m

By: Dieter Roettig

Eching is temporarily "stronghold for flood mosquitoes." On the other hand, they want to use the natural toxin BTI.

In the private sector, traps are recommended that Dr.

Silke Göttler explains to Mayor Siegfried Luge (left).

On the right landscape ecologist Johann Schmidt.

© Roettig

Eching – As early as November 2019, 79.53 of those entitled to vote in Eching had voted in favor of measures to combat mosquitoes in a council request.

The summers of 2017 and 2019 were remembered too well, when the aggressive critters undertook particularly extreme blood raids in beer gardens, on private terraces and on the lawn by the lake.

The plague reached Dießen, where a soccer player had to be hospitalized after more than 460 bites.

Despite the clear result, the municipality only took the first step in May 2021 with a counting campaign in order to be able to take action with the blessing of the authorities in the event of a mosquito overpopulation.

Mayor Siegfried Luge presented the result at a public council meeting in the sports hall.

Speakers were qualified biologist Dr.

Silke Göttler, "Mosquito Monitoring Project Manager" at the trap manufacturer Biogents and Dipl.-Ing Johann Schmidt from Ökon, Society for Landscape Ecology.


To anticipate the result right away: The years 2017 and 2019 with the extreme mosquito plagues were probably only "temporary phenomena".

During the monitoring period and so far this year, there has only been “a small plague of mosquitoes”, according to Dr.

Silke Goettler.

They had set up carbon dioxide suction traps at six locations in the municipal area, which attracted the mosquitoes with a scent that smelled like human skin.

Volunteer "trap keepers" from the community periodically swapped out the trap bags and sent them to the lab for accurate species identification.


The result in the period July/August 2021: 649 flood mosquitoes, 123 house mosquitoes and 17 forest mosquitoes.

In addition, a so-called counter-trap at the Echingen sewage treatment plant transmitted the number of mosquitoes caught online in real time.

Identifying the species is so important because only the flood mosquitoes can be fought with the previously favored protein preparation BTI (Bacillus Thuringiensis Israelensis).


In the 15 areas examined with scoop samples, ditches, meadows and reed stands with small and old water, almost exclusively flood mosquitoes were found.

However, most damp and wet terrain areas are designated as biotopes or protected areas, where combating with BTI is prohibited anyway.

The flood mosquitoes prefer to lay their eggs in these flooded areas.

If they are inundated by heavy rain or high water, millions of mosquitoes hatch within a few days and begin their 'merciless hunt' for people, covering kilometers of distance depending on the wind.

They appear in swarms, especially in the afternoons and evenings, when the humidity is high and in shaded areas.


In the event of a future increase in the number of mosquitoes, the two experts recommended a combination of BTI on the permitted areas and special traps, which are primarily used in private gardens and public areas.

Source: merkur

All news articles on 2022-06-26

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