All articles tagged with #aedes aegypti
San Gabriel Valley Mosquito and Vector Control District is releasing about 480,000 sterile male Aedes aegypti mosquitoes over 16 weeks in a 25-acre Bassett area to prevent wild females from producing offspring, using Wolbachia bacteria; since these are males, they don’t bite, and the program aims to reduce mosquito bites and dengue risk as peak season arrives.
Sacramento’s Rosemont neighborhood kicked off a Sterile Insect Technique program by releasing 144,000 sterile male Aedes aegypti mosquitoes to outcompete wild males and reduce the invasive population, part of a plan to release 2.3 million sterile insects over 16 weeks. The Wolbachia-based approach is environmentally friendly and targets only Aedes aegypti, with previous Natomas pilot showing up to 40% population reduction. The program aims to lower disease risk from dengue, Zika, and chikungunya, while public health officials emphasize the need for residents to drain standing water, use repellents, and report unusual activity. If successful, the program could expand to additional areas.
With Cayman’s rainy season underway, the Mosquito Research and Control Unit is intensifying efforts, conducting island-wide daytime aerial larviciding to kill mosquito larvae before they become biting adults, alongside surveillance and biological controls. Scientists identify 36 species on the islands, notably Aedes aegypti, which spreads dengue, Zika and chikungunya. Mosquito bites are more likely in people with higher body heat and carbon dioxide output, skin bacteria, or sweat chemistry, and ankles, wrists, and neck are common bite sites. Residents are urged to remove standing water and support integrated pest management, including Gambusia fish, to curb emergences.
A UCSB-led study found infrared radiation from human skin temperatures doubles female Aedes aegypti mosquitoes’ host-seeking when combined with CO2 and human odor, revealing a new heat-detection cue that helps mosquitoes locate humans up to ~70 cm away. The mechanism likely involves heat-activated neurons on the mosquitoes’ antennae rather than visible-light receptors, with implications for improved traps and understanding disease transmission as climate change expands mosquito ranges.
Los Angeles County’s vector-control district is expanding the sterile insect technique to curb Aedes aegypti mosquitoes linked to dengue, releasing sterilized males and seeking to broaden the program beyond Sunland-Tujunga. The expansion hinges on a new funding mechanism—a up to $20 per year per single-family home via a property benefit assessment on top of the existing $18.97—despite only 47% of ballots supporting the increase and opposition from some business owners. Pilot releases in two Sunland-Tujunga neighborhoods cut the female mosquito population by about 82%, but officials say broader adoption requires more funds and public buy-in; a second ballot round is planned while production continues in the insectary and field releases.
Researchers warn that the mosquito species Aedes aegypti has become 50 to 100 times more common in transmitting diseases like dengue, Zika, and chikungunya due to its evolution and global spread, driven by climate change and urbanization, posing increased health risks worldwide.
Aedes aegypti mosquitoes, native to tropical regions and carriers of diseases like dengue and Zika, have been found thriving in Grand Junction, Colorado, due to warmer winters and climate change, raising concerns about potential disease outbreaks in the region.
Authorities in California are concerned about the spread of the invasive Aedes aegypti mosquito, which can transmit diseases like dengue and Zika, as it expands across multiple counties, driven by climate change and urbanization. Efforts include increased surveillance and community participation to control its spread, highlighting the need for environmental action to address broader ecological impacts.
A study using fluorescent sperm and high-resolution filming revealed that female Aedes aegypti mosquitoes actively participate in mating by signaling readiness, challenging the previous view that males are solely in charge, which could impact strategies for controlling disease-carrying mosquitoes.
Officials in Canyon County, Idaho, detected the first known Aedes aegypti mosquito, a species that can spread diseases like dengue and Zika, prompting increased monitoring and public awareness efforts to prevent its spread and protect local ecosystems and health.
Invasive aedes aegypti mosquitoes, capable of spreading diseases like Zika and dengue, have been found in south Ashland, prompting local vector control efforts and public awareness campaigns to eliminate standing water and prevent further spread.
Two aggressive, disease-causing Aedes aegypti mosquitoes were found in Livermore, California, marking the first detection in the area. Residents are urged to eliminate standing water and take protective measures to prevent the spread of diseases like dengue and Zika.
Santa Clara County officials have identified the invasive Aedes aegypti mosquito in six locations, including four in San Jose. Known for aggressive daytime biting, this mosquito can transmit diseases like dengue and Zika. The county urges residents to eliminate standing water and cooperate with inspections to prevent the mosquito from establishing a permanent presence. Efforts include larvicide spraying and public education on protective measures. The mosquito's spread is linked to climate change, and its presence is noted in 19 California counties.
The Southern Nevada Health District has detected the first West Nile virus-positive mosquitoes in Clark County, specifically in the 89031 and 89032 ZIP codes. The district urges residents to participate in the "Fight the Bite" campaign to reduce mosquito impact by eliminating standing water, taking precautions against bites, and reporting mosquito activity.
Santa Clara County officials will spray an East San Jose neighborhood with a bacterial pesticide next week to eradicate invasive Aedes aegypti mosquitoes, which can carry diseases like Zika and dengue. The treatment targets mosquito larvae and is safe for humans and wildlife. The county plans multiple sprayings over the next few months to control the mosquito population, which poses a low but significant health risk. Residents are advised to eliminate standing water and use insect repellents to protect against bites.