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Pyrethrum: How One of the Oldest Natural Insecticides Keeps Mosquitoes Away With mosquito season upon us, people are stocking up on repellents to prevent itchy bites. Bug repellents are important because they don’t just protect against the buzzing, blood-sucking little pests they also safeguard against the diseases they carry, which kill some 700,000 people worldwide each year. Surprisingly, despite widespread use, no one understood exactly how most mosquito repellents keep the insects away. Now researchers are starting to uncover the first pieces of the puzzle. A new study has identified a scent receptor in mosquitoes that helps them sniff out and avoid trace amounts of pyrethrum, a plant extract used for centuries to repel biting insects. ....
Date Time How One of Oldest Natural Insecticides Keeps Mosquitoes Away The Aedes aegypti mosquito, which can spread dengue fever, Zika virus and yellow fever. New research shows mosquitoes are able to “sniff out” trace amounts of insecticides using specialized receptors on their antennae. Photo by James Gathany, CDC DURHAM, N.C. With mosquito season upon us, people are stocking up on repellents to prevent itchy bites. Bug repellents are important because they don’t just protect against the buzzing, blood-sucking little pests they also safeguard against the diseases they carry, which kill some 700,000 people worldwide each year. Surprisingly, despite widespread use, no one understood exactly how most mosquito repellents keep the insects away. Now researchers are starting to uncover the first pieces of the puzzle. ....
E-Mail DURHAM, N.C. With mosquito season upon us, people are stocking up on repellents to prevent itchy bites. Bug repellents are important because they don t just protect against the buzzing, blood-sucking little pests they also safeguard against the diseases they carry, which kill some 700,000 people worldwide each year. Surprisingly, despite widespread use, no one understood exactly how most mosquito repellents keep the insects away. Now researchers are starting to uncover the first pieces of the puzzle. A new study has identified a scent receptor in mosquitoes that helps them sniff out and avoid trace amounts of pyrethrum, a plant extract used for centuries to repel biting insects. ....
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Credit: Argonne National Laboratory Six groups that included 17 scientists, engineers and other staff from the U.S. Department of Energy s (DOE) Argonne National Laboratory were recipients of the recently announced DOE 2020 Secretary of Energy s Honor Awards. The Laboratory can be very proud. The number of Argonne researchers who earned this prestigious recognition from DOE, the Secretary s Honor Awards, is more than double that of the previous year, said Argonne Director Paul Kearns. Congratulations to all the honorees and a special thanks to your research teams for their contributions to this impactful science. These achievements demonstrate the exceptional ways Argonne discoveries benefit the nation and contribute to the worldwide fight against COVID-19. ....