Researchers in the United States have genetically modified mosquitoes to make people less attractive to them-an opening that can significantly reduce the spread of mosquito-borne diseases such as dengue, malaria and zia.
Female mosquitoes were long. It's known that they use a range of touch-sensitive data to find people to bite them.
They may feel exhaled carbon dioxide at a distance of up to 10 meters, and also be able to detect body odor and body moisture
Studies published in Current Biology have shown that the sour component in human sweat plays a key role in attracting insects.
"We wanted to understand the genetic basis of how mosquitoes manifest their human hosts," said Matthew DeGennaro, researcher of mosquito neurobiology at the International University of Florida told Al Jazeera.
Scientists have identified a gene ̵
Using advanced CRISPR / Cas9 gene edit technologies, researchers have been able to break this gene by making the female Aedes aegypti mosquitoes much less interested in humans.
"Deleting the Ir8a function removes approximately 50% of the activity that the host is looking for," DeGennaro said.
Genetically modified mosquitoes were less likely to be detected and bitten by humans,
For species such as Aedes aegypti, which lives alongside half the world's population – and annually spreading diseases that kill millions of people – this genetic modification has enormous potential benefits for Healthy
"Transmission of diseases such as dengue fever, yellow fever, zia and malaria may be blocked if we stop these mosquitoes from biting us," DeGennaro said. Ial
Although the release of genetically modified mosquitoes into wildlife to combat the spread of the dengue fever is a controversial practice, this latest study does not focus only on the potential for cross-fertilization with wild populations.
Researchers say their work can also offer a deeper understanding of how mosquitoes hunt and feed their human goals and allow them to develop improved repellants from mosquitoes.
"Smells that disguise the way of IR8a can improve the efficiency of current repellents such as DEET or picanidine. Thus, our discovery can help people to disappear as potential hosts for mosquitoes," said DeGennaro.