The Invasion of the multicoloured Asian ladybird
Once used in the integrated aphid control, the multicoloured Asian ladybird – Harmonia axyridis – is today one of the most abundant species in our regions, even entering the very heart of our homes. But the scientific clever riposte is little by little being put together. Gembloux Agro-Bio Tech has just taken a decisive step in the identification of…the hydrocarbons which play a role in the formation of the animal’s Winter aggregations.
From 2001, people started to become disenchanted. Whilst the insect was thought unable to survive the rough Winters, it started to be noticed here and there in Flanders, out in the wild nature. Then in Brussels. Next in Wallonia. In hardly ten years, the ladybird spread extraordinarily quickly and ended up invading the whole country, a process which has today earned it its status as an invasive species.