The recent article about the Aedes Vexan mosquito led me to want to share with your readers more information about this particular species.

The Aedes Vexan is one of about 50 species that live in Louisiana, out of about 250 species worldwide. You mentioned that it does not carry West Nile, which is a good thing, but they do carry the disease that gives dog’s heartworms. Keep dogs inside when possible, and if they are not on a heartworm preventive, contact your veterinarian. In addition, the species can carry encephalitis and meningitis. For you rabbit lovers and breeders, they also carry mytomatosis, a deadly rabbit disease.

As the name “floodwater” implies, that is, of course, how the mosquitoes hatch. They will often fly up to 10 miles to find a good place to deposit eggs.

Their breeding is such that eggs will not hatch until the eggs are certain they will be covered with water. Next comes the larva stage, 5 to 7 days, and then they become a pupa.

In the larva stage, mosquitoes can be killed in standing water with a larvacide. We use mosquito dunks, but there are many products to choose from. It is imperative that you purchase and liberally use these products when you have standing water. It is not expensive, lasts for 30 days and kills mosquitoes in their larva stage. If the standing water is on your neighbor’s property, ask them to purchase a larvacide. Another solution includes bringing in dirt and filling low-lying areas.

Now the bad news: This outbreak could happen repeatedly over the next 2 to 3 weeks.

This species does not begin its life cycle until night temperatures fall below 65 degrees. Unfortunately, the rain we had again this weekend will bring another round of the species. As those who have been affected can attest, they all hatch at once.

Best of luck, and remember to drain standing water, use larvacide as much as possible and protect dogs and rabbits.

Jim Wood

owner, The Mosquito Authority

Baton Rouge