In a container of water crowded with mosquito larvae, killing only some of them can sometimes result in more adult mosquitoes emerging than would have otherwise. New research on three container-breeding mosquito species details the complex dynamics between changes in larval density and mosquito survival and offers insight into the optimal timing for mosquito-control treatments.
In a new study on truck-mounted mosquito-control sprays, the proportion of local mosquito populations that could potentially carry West Nile virus decreased after treatments, even though overall numbers of mosquitoes weren't affected—an "invisible" but positive sign about the utility of such mosquito management efforts.
Researchers in Florida find that male Aedes aegypti mosquitoes live longer when irradiated as adults rather than pupae, an important advance in protocols for deploying the sterile insect technique to manage wild populations of disease-transmitting mosquitoes.
In an analysis of mosquito sampling across 20 years in Connecticut, mosquito populations were often correlated at sites 10 kilometers apart and sometimes as far as 40 kilometers apart. But the same data showed the presence of mosquito-borne viruses rarely correlated across distances more than 5 kilometers, complicating potential approaches to managing mosquitoes and the risk of vector-borne disease.
A new meta-analysis indicates that the yellow fever mosquito (Aedes aegypti) travels an average distance of 106 meters in mark-release-recapture studies, a figure that could play an important role in mosquito-management efforts.