Mosquito infestation around Lake Constance

Mosquito infestation around Lake Constance
Mosquito infestation around Lake Constance

Mosquitoes are spreading explosively around Lake Constance after the floods. We can already speak of an invasion, local authorities indicated on Monday.

According to Rainer Bretthauer, head of environmental protection in the German town of Radolfzell, the floods of recent days provide perfect conditions for egg laying, leading to mass reproduction.

So-called ‘flood’ mosquitoes are particularly ferocious in their quest for blood, as they must reproduce quickly before favorable conditions disappear. They lay their eggs on moist soils, often in riparian and alluvial areas of rivers, where they can survive for several years in the soil.

When the egg-laying sites are flooded and the temperature is favorable, egg development begins. In the event of large-scale flooding, massive outbreaks may occur.

Birds and fish benefit

Tourists visiting Lake Constance and local residents should equip themselves accordingly, for example by adapting their clothing, warned Mr Bretthauer. Loose, long clothing is recommended. The time also plays a role when staying outdoors: ‘At dusk, above 18 degrees, they become aggressive’

According to the nature conservation association Naturschutzbund (Nabu), however, mosquitoes are a good thing for many animals: ‘All insects that are now thriving are a very important food base for many species of fish and also for birds’, underlines Eberhard Klein, from Nabu in Constance (D).

/ATS

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