A 2022 study found that mosquitoes in parts of South-east Asia had developed resistance to a common insecticide. Read more at straitstimes.com.
new technology has been developed to eradicate the insects without the use of pesticides.
An aqueous surfactant solution that rapidly coats the wings and body of a mosquito can prevent it from flying and knock it down, Kao found. Additionally, the solution can block spiracles – small openings on the abdomen of the insect that allows it to suck in air – and prevent the mosquito from taking in oxygen.
This comes after a study found that most Aedes aegypti mosquitoes, which carry diseases such as dengue and Zika, collected in Cambodia and Vietnam had developed a mutation that made them “super-resistant” to a commonly used insecticide, according to scientific journal Science Advances in December 2022.
But the effectiveness of aerosols in controlling Aedes aegypti populations has been debated, as the spray needs to make direct contact with the mosquito, said infectious diseases expert Ooi Eng Eong.
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