The tiger mosquito returns to Meurthe-et-Moselle

The tiger mosquito returns to Meurthe-et-Moselle
The tiger mosquito returns to Meurthe-et-Moselle

The tiger mosquito is present in Meurthe-et-Moselle since 2021. Recognizable by its small size, its black and white stripes and its silent flight, it bites mainly on the lower body, in the morning and evening.

The insect is one of the 10 most invasive species in the world. To travel long distances, the tiger mosquito depends on humans; it is not capable of flying more than 150 meters from its birthplace. The species native to the forests of Asia traveled the continents aboard old tires loaded into container ships, and thus colonized 80 countries.

The tiger mosquito arrived in Lorraine by transport, from the Paris region and Alsace, contaminated since 2015. “Its location follows major roads”, explains Florian Vernicho, from the Altopictus company, which monitors the tiger mosquito in the department. It was identified for the first time in Nancy in 2021, and last year in Séchan and Pulnoy. The mosquito is now present in 92 municipalities in the region, compared to 48 municipalities in 2022.

Once established, it is virtually impossible to eradicate this invader, which reproduces quickly. A female can lay up to 800 eggs. The presence of insects is studied using nesting traps, 325 in the Grand-Est. THE individuals can also report their presence on the ANSES portal, but only fourteen reports were verified in Meurthe et Moselle last year.

The mosquito is closely scrutinized by health authorities in the region, because it is a vector of certain diseases such as dengue fever, chikungunya or the zika virus. However, the risks of contamination are very low. The mosquito is not born carrying these diseases, and must therefore have bitten an infected person to transmit it.

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Some tips against the tiger mosquito

To prevent mosquitoes from proliferating, it is necessary empty any container of stagnant water outdoors. Females lay their larvae in any small container and one week is enough for them to grow. If you have a garden, remember to empty plant saucers, containers and children’s toys.

To avoid bites, it is advisable to wear covering, light and loose clothing. Mosquito nets on windows and around beds and fans also help keep mosquitoes away. As for repellents, only insecticide-based products have scientifically proven effectiveness, but using them every day can be harmful.

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