While the Asian hornet raging on the European continent and particularly in France since 2004, its expansion has continued to make significant damage. The French and bees have seen their numbers decrease drastically since the onset of the Asian hornets are very aggressive toward his cousins of the European continent, accentuating their disappearance Read also.: Nantes: A carnivorous plant attacks the Asian hornets However, researchers from the University of Tours seem to have demonstrated that their expansion is not irreversible, indeed, hornets suffer of “inbreeding depression”. The explanation would be that the Asian hornet has few queens, because as its congeners, the Asian hornet produces too many males and not enough “to workers “, especially from spring to mid-August. This anomaly may be related to loss of genetic diversity, males do not participate in the activity of the colony, it will decrease the spread of this species. The Asian hornet has distinguished by the problems it has caused in the European continent since 2009, 4 people have died because of bites hornets. Hornets settled mainly in the vicinity of dwellings and as such represent a real danger to the surrounding population. These insects have a habit of attacking en masse, but bites are rare, but are painful. In addition to being a problem for humans, hornets decimating entire hives of bees, it also pose environmental problems and has a major impact on biodiversity. This study is timely after more than 10 years of coexistence with other dogs, the Asian hornet should be reduced in the coming years, a good thing for the environment hornet Yellowlegs ( Asian predatory wasp ), also called Asian hornet , is, like all the drones, a wasp of the family Vespidae, and type Vespa . There are many subspecies (Carpenter & amp; Kojima, 1997), including Asian predatory wasp nigrithorax described in 1905 by the Buysson deDarjeeling (India). Naturally acclimated to a medium temperate to subtropical, this subspecies was introduced in France (probably before 2004). It is found in mainland Asia to northern India and in the mountains of China, geographical areas where the climate is similar to that of France, which explains its installation may have been possible and colonization of new territories in Europe. In September 2009, a nest is discovered in Île-de-France in Blanc-Mesnil, northeast of Paris, but in reality, the species would have already crossed the border Franco Belgium (a nest of 60- 80 cm in diameter was destroyed by fire brigades, birch, approximately 20m height in Somain (Nord) end of October 2011). In October 2012, a nest is discovered at Jouy-en-Josas, southwest of Paris, and in November, a man was fatally stung in Coron near Saumur. Two nests are destroyed in Eure-et-Loir early August 2013. Three primary nests were destroyed in June and July 2013 in the Eure; no side nests have been detected, the department is not declared formally colonized. Scientists at the National Museum of Natural History offered voluntary naturalists to report changes and movements this population on their website via a report form, in connection with the Daisie network (Delivering Alien Invasive Species Inventories Europe) in Europe which follows the invasive species. An identification card is in using online information system on the site of the nature and the landscapes (SINP). The increase in the invasion front is approximately 60 km per year, the hornet is present on 50% of the metropolitan territory (mostly the southern half) in 2012. The map of its distribution is regularly updated on the website of the INPN and the MNHN dedicated to this species. Asian Hornet -. Asian predatory wasp
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