Par Busybee le 13 Décembre 2018 à 22:23
The Asian hornet has many subspecies. A black subspecies, Vespa Velutina Nigrithorax, was introduced into Europe before 2004 where it has become an invasive species. By April 2017, the hornet had already colonized most of France, Portugal, northern Spain and parts of Italy, Germany, Belgium and Great Britain.
Distribution of Vespa Velutina in France from 2004 to 2016
Departments colonized between 2004 and 2010
Colonized departments between 2011 and 2015
Departments in the process of colonization (2016)
Vespa velutina was first observed in France in 2004 in Lot-et-Garonne, probably from containers of Chinese pottery imported into Lot-et-Garonne via the port of Le Havre.
Par Busybee le 22 Novembre 2018 à 09:48
In fact, the Asian hornet is not more dangerous than a wasp! Its sting is even less painful than the one of a bee that will leave its sting and part of its abdomen. The hornet just stings and then withdraws. The victims identified each year die because of an allergic reactions. The only problem is that if you've never been stung, you don't know if you're allergic or not. And even if you are, it is sometimes difficult to avoid the bite.
Nevertheless, the main victim of the Asian hornet is the bee! The Asian hornet represents a real danger for French bees. Why? Because it is used to feeding its larvae with insects, especially bees!
It is therefore a terrible bee-killing insect, which does not hesitate to attack the bees' hives in order to destroy them. And this species is very effective in destroying bees because it is estimated that only 10 Asian hornets are needed to destroy a whole hive of bees.
Par Busybee le 15 Novembre 2018 à 14:41
The asian hornet measures around 25mm for the worker and up to 35mm for the queen.
A worker's life is from 30 to 55 days in comparison to 1 year for the queen.
It has a black brown thorax and the 4th segment is a yellowy-orange colour.
The difference between the male and female asian hornets are the two little yellow circles at the extremity of the belly and a male has 11 rings on the antenna whereas the female has 10.
You can find around two hundred queens in a hive compared to only one for the bees.
Last winter in France no queen died whereas as usual around 85% die every winter.
At the beginning of the spring the queen searches for a place to create a nest. The nest can be anywhere. It's often light grey and the size of a tennis ball.
The queen makes a new nest every year because it degrades itself with time.
Par Busybee le 11 Novembre 2018 à 14:38
The Asian hornet is really widespread.
Thus, to eliminate it, it is necessary to use different methods that are more or less efficient.
The w ays to fight :
The frogs : They can eat the Asian Hornet and when they eat it, the frogs are immunized against the Asian Hornet stings, so when they eat them, they survive.
The bottle : to fight against Asian Hornet, people can make a trap. This trap is a bottle made of plastic. You make some 5mm holes and then, you fill the bottle with a glass of beer, one of white wine (to repel bees) and a little bit of syrup (raspberry or blackberry).
Destroy the nest : we can destroy Asian Hornet nests by using a telescopic pole. The destruction must be done between July and November because they migrate after this period. This is the most efficient method.
But scientists also have doubts about the frenzy of traps. An irrational fight against an invasive species could lead to favor its installation !!
Par Busybee le 6 Novembre 2018 à 20:06
The Asian hornet, or by its real name, Vespa Velutina, is an insect which arrived in France in 2004 from Asia. In 2017, it had invaded almost all Western Europe. In France, it appears between July and October in the South-West. It destroys bee hives, because it's its favourite target, and so, accelerates the disappearance of beekeepers. All the insects are preys for it and in France, it's very invasive because it doesn't have any predators. Its stings are very painful, but it will be mortal only if there are many. It's not aggressive except when you get too close to an active nest. The nest can reach one meter high and 0,8 meter in diameter. The asian hornet builds it in spring. The nest is most often located in trees but it's sometimes at ground level, under a frame or in chimneys for example.
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