Essonne and its neighboring departments are colonized by the tiger mosquito. For several years, the fight has been organized at different levels to ward off the invasion.
Posted on 31 Jul 20 at 12:29
As every year for a little less than 20 years in France, the return of heat is accompanied by that of tiger mosquito. Arrived in France in 2004, in Menton (Alpes-Maritimes), this particularly tough and invasive insect has today colonized 58 departments of the metropolis includingEssonne.
A call to report the presence of the tiger mosquito
In an attempt to contain this dazzling proliferation, national, regional and departmental authorities are implementing various actions.
For example, the Health Security Agency (ANSES) has relaunched, for the third consecutive year, a call to all to report the presence of the invader via the site signalement-moustique.anses.fr.
At the Ile-de-France level, the Regional Health Agency (ARS) notably carries out entomological surveillance (i.e. mosquito populations) in areas where the mosquito is present or likely to establish itself.
“Provided throughout the region by means of nesting traps. This surveillance aims to detect the implantation and activity of the mosquito, ”explains the body responsible for implementing the health policy.
470 nesting traps in Île-de-France
Contacted, the ARS of Île-de-France indicates that it does not communicate the communes where traps have been installed. However, it specifies the criteria that determine the location of these traps:
They depend on the one hand on reports made in the field, on the weather, on the “sensitivity” of the place such as hospitals, airports or places with high tourist traffic such as the Château de Vincennes or Disneyland.
In total, 470 traps were installed throughout the Ile-de-France region by the Regional Health Agency:
The tiger mosquito has been identified in all departments of the region except Val d’Oise.
Mosquito control campaigns with a larvicide
Among the municipalities where nesting traps have been placed is the municipality of Yerres. Nevertheless, the town went further by renewing its mosquito control operation.
A truck fitted with a turbine propelling a larvicidal product used in organic farming is currently treating (and for a few more days) around thirty wetlands in the city (stagnant water points, river banks, parks, retention ponds, rooms water) allowing the reproduction of the tiger mosquito.
The mayor of the town, Olivier Clodong emphasizes that this larvicide is “a harmless product for people, fauna and flora”:
This product only attacks mosquitoes and works within hours, releasing bacteria that will enter the larvae and eat them.
Recommendations for individuals
The development cycle of mosquito larvae extending over a period of two to three weeks, the municipality is planning a second treatment campaign within three weeks on the same points, representing a total of fifteen hectares.
The mayor of Yerres specifies:
This is a process that we are implementing for the third consecutive summer, each time with convincing results. The two treatment campaigns make it possible to eradicate as many larvae as possible.
In addition to the public authorities, everyone can also participate in limiting the proliferation of the tiger mosquito.
How to fight?
Eliminate places where water can stagnate (green waste, used tires, bulky items, etc.)
Change the water in plants and flowers every week
Empty containers containing water (watering cans, saucers, etc.)
Check the proper flow of the gutters
Cover water tanks (cans, cisterns, basins and out-of-service swimming pools)