The female lays her eggs on the cardboard paddles. The eggs then fall through the mesh into the water, where the larvae hatch and develop into pupas. When the adult mosquitoes emerge, they are trapped beneath the mesh and are unable to escape from the ovitrap.
Ovitraps do not require electricity for functioning. They are simple mechanical traps that work passively by attracting mosquitoes.
Autocidal gravid ovitraps protect humans from chikungunya virus infection by reducing Aedes aegypti mosquito populations.
It involves the release of non-biting male Wolbachia-carrying mosquitoes to mate with urban female mosquitoes. As these matings produce eggs that do not hatch, continued releases result in reduced mosquito populations.
Even when used correctly, a mosquito trap takes time. It has to be in place four to six weeks to have a significant effect on the mosquito population. It takes that long for existing eggs to hatch and get captured. Once they have been trapped, the population starts to decline.
DISADVANTAGES: Water must be treated to avoid adult emergence from the trap medium. Requires frequent water changes to ensure proper habitat. Requires carrying buckets of water into the field to replenish the trap.
Final Verdict. The Dynatrap Mosquito & Flying Insect Trap is our top pick because it utilizes three methods—UV light, TiO2 coating, and a fan—to eliminate mosquitoes effectively. It has a lightweight design for easy portability and covers up to half an acre.
During the survey period, 36 (0.12%) mosquitoes from amongst 29,252 female mosquitoes were positive for a DENV type. In total, 22.20% of dengue-positive mosquitoes were DENV-1, 25% were DENV-2, 17% were DENV-3, but none were positive for DENV-4.
NEA's comprehensive risk assessment (see detailed reports below) of Wolbachia-Aedes suppression technology has determined it to be safe, with no risk to human health and insignificant risk to ecology. This conclusion is consistent with findings from other groups around the world.
Several Aedes-specific traps such as the Biogents Gravid Aedes Trap (BG-GAT), CDC- Autocidal Gravid Ovitrap (CDC-AGO), and Springstar Trap-N-Kill are designed to reduce mosquito populations by attracting and killing ovipositing females.
While larvicidal ovitraps only reduce larval growth, they do not kill the adult mosquitoes that may carry diseases. Adulticidal ovitraps act to kill the viremic (disease-carrying) female mosquitoes and act to directly stop disease transmission.
The evidence available at this time demonstrates that Chikungunya virus infection produces lifelong immunity. The disease can be acquired only once due to the presence of antibodies that protect against future infection by the virus.
Pregnancy and breastfeeding
Chikungunya virus has not been found in breast milk, and there have been no reports to date of infants being infected through breastfeeding.
The Gravitrap is a simple, hay infusion-filled cylindrical trap with a sticky inner surface to serve as an oviposition site for gravid female Aedes mosquitoes.
Currently, ovitraps (Figure 1) are used as a means of detecting Aedes aegypti presence as well as an approximate gauge of the adult population in an area. It can be used to estimate fairly well the population of adult mosquitoes in the environment by counting the number of eggs laid on the moist paddle.
Gravid traps use a small electric fan, typically powered by a 6-volt lantern battery (Fig. 1), to suck up the mosquitoes that visit the bait container and blow them into a collection bag.
By releasing male Wolbachia-infected mosquitoes into the community, Singapore is following a protocol that aims to suppress the population of native mosquitoes. When such males mate with local Wolbachia-free females, the females lay eggs that won't hatch, and in time the number of mosquitoes decreases.
The top three best-performing emulsions for repelling Aedes aegypti mosquitoes and Ixodes scapularis ticks were emulsions with clove oil, cinnamon oil, and geraniol. These three essential oils contained 20, 39, and 26 identifiable terpenes.
The average lifespan of an Aedes mosquito in nature is two weeks. The mosquito can lay eggs about three times in its lifetime, and about 100 eggs are produced each time.
The first locally acquired case of dengue virus in 2024 was reported in a Cameron County resident. It has been a highly active year for dengue virus globally. As of today, there have been 106 travel-associated dengue cases, including one death reported in Texas.
Dengue causes flu-like symptoms and lasts for 2–7 days. Dengue fever usually occurs after an incubation period of 4–10 days after the bite of the infected mosquito. High Fever (40 °C/104 °F) is usually accompanied by at least two of the following symptoms: headaches.
Mosquitoes are turned off by several natural scents, including citronella, peppermint, cedar, catnip, patchouli, lemongrass, lavender and more. You can add some of these plants to your landscaping to fend them off.
Many birds will eat mosquitoes. The more important among these are purple martins, swallows, waterfowl (geese, terns, ducks) and migratory songbirds. Bird predators usually eat both the adult and aquatic stages of mosquitoes.
Mosquito control professionals use plant-derived pyrethrins, often referred to as pyrethrum, to kill adult mosquitoes using ULV spraying.