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The invasion of the Asian ladybird

Asian ladybird harmonized is an Asian species of ladybird which was in the USA in the Sixties after several attempts to fight against the plant louses of which it is very fond of delicacies, but it is only into 1988 that the acclimatization was noted. Europe also introduced it more recently into the crops under greenhouses then bound for the private individuals by placing at the disposal them larvae to be deposited on the plants in the garden-centers. It was imported into France by the in 1982. The intention was creditable in the measurement or it was a question of fighting against the development of the plant louses in the crops in the place of the pesticides. Why thus does not have one to privilege our local species?

This ladybird originating in China, Korea and Japan adapted so much well that it invades from now on whole areas while progressing of north towards the south. On sale in Belgium since end of the year 90, it invaded the Flanders in 4 years! The invasion of France is proven. Today it is present on most of the territory. She was recently discovered in Loire-Atlantique and the observations multiply in the Pays-de-la-Loire, in Burgundy, in Franche-Comté and the Rhone-Alps.

Inoffensive for the man, she with the detriment of the endemic species like our ladybird at seven points ( 7-punctata). The larva of this ladybird can attack the larvae of the local ladybirds when its food has suddenly missed or that the opportunity arises.

The Asian ladybirds gather with the autumn thanks to a substance which they issue and move in groups to find a refuge to spend the winter. The interior of a house will be often privileged.

Once again the man while trying to intervene on nature by introducing this species with contributed to an irreversible unbalance. It will be necessary from now on to count on this new species and with its invasive presence initially before a new balance is done.

Your comments
Comment of (Country of the Loire):
This ladybird has to banish our slack it is so much well adapted which now it eats even our ladybirds Frenchwoman.

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