Red alarm level: Asian hornets threatens bees in NRW!

Red alarm level: Asian hornets threatens bees in NRW!

The Asian hornets (Vespa Velutina) is an invasive way that has shown a worrying distribution five years ago since its first appearance in North Rhine-Westphalia. Lately, she has increasingly attracted the attention of the authorities and the public. Nevertheless, the hornet, which can be seen due to their predominant black color and the typical yellow legs, is usually harmless to humans without allergies, but can cause pain due to their stitch.

The insect was first introduced to Germany in the Heinsberg district in 2020, presumably through Asian import goods. In recent years, sightings in large cities such as Cologne, Düsseldorf, and Duisburg and in the district of Viersen have also been registered. Especially floors and city belts below 200 meters represent preferred habitats for the Asian hornets. Despite their more painful stitch compared to local bees, the Asian hornets represents a significant threat to biodiversity, since they specifically attack bee colonies.

threat to biodiversity

The Asian hornets in NRW was declared a serious danger for the domestic fauna. The domestic honeybees that have no special defense mechanisms against the attacks of the hornets are particularly at risk. These insects are not only a threat to beehives, but they also tear damage to fruit and wine cultures. Last year, over 1,385 reports on sightings were received by the responsible authorities, which is a dramatic increase compared to only around 400 reports in 2023

The way of life of the Asian hornets clearly differs from European relationship. While the queen can grow up to 3 cm, the workers reach a length of up to 2.4 cm. Their nests are often in high tree tops, where they are protected from weather influences. From March, the hornets often build primary nests in hedges, bushes or roof overhangs that are easier to remove than the later secondary nests.

recognize and report sightings

Citizens are called to report sightings of the Asian hornets immediately. The responsible authorities in cities such as Mönchengladbach urge to observe and note the nests and hornets themselves, but to avoid independent distance. This should only be done by specialist staff, since the hornets can react aggressively in the event of disorders. A useful reporting platform is the "My Environment" app, which facilitates the exchange of information about such views.

The increase in invasive species, which include the Asian hornets, is favored by global trade and traffic. Around 900 established neobiota species are currently known in Germany, which together make up around 1 % of the approximately 74,000 species. These developments require measures to protect existing biodiversity, since invasive types such as the hornet could spread further due to changed climatic conditions.

Overall, it should be noted that the spread of Asian hornets must be taken seriously to protect domestic ecosystems. Citizens who come across this way should make informed decisions and report their observations.

Further information can be found on the websites of 24rhein and bfn .