Guangzhou has been releasing sterilized mosquitoes for 8 consecutive years, releasing 360 million mosquitoes a year and producing 10 million mosquitoes per week

Tech 2023-07-08 23:34:39 Source: Network

Guangzhou has been releasing "sterilized mosquitoes" for 8 consecutive years, releasing 360 million sterilized mosquitoes annually. The mosquito factory of Xi Zhiyong's team of Sun Yat-sen University realizes the automation of equipment and instruments, and produces 10 million mosquitoes every week

Guangzhou has been releasing "sterilized mosquitoes" for 8 consecutive years, releasing 360 million sterilized mosquitoes annually. The mosquito factory of Xi Zhiyong's team of Sun Yat-sen University realizes the automation of equipment and instruments, and produces 10 million mosquitoes every week. In the summer of 2022, 5 million mosquitoes were released from Huangpu District alone to test the biochemical sterilization effect of mosquitoes. So how do sterilized mosquitoes cause female mosquitoes in the wild to lay undeveloped eggs?

Mosquito Factory

It is understood that Xi Zhiyong's team extracted Wolbachia from Drosophila melanogaster, Aedes mosquito and Culex mosquito, introduced it into the Asian tiger mosquito, and then established a mosquito strain carrying Wolbachia. The principle is to release male mosquitoes carrying this parasitic fungus and mate with female mosquitoes in the wild, so the eggs laid cannot develop.

Mosquito control principle

Mosquito Factory

Research on Sterilized Mosquitoes

Many places have been continuously releasing and sterilizing mosquitoes for several years

Some urban villages and old urban areas in Guangzhou, as well as some parks and outdoor public places, have been piloted for several consecutive years. The place where sterile male mosquitoes are released is, of course, a place where there are a large number of wild female mosquitoes. Although everyone didn't feel it, in fact, a lot of results have been achieved.

Although some experts have expressed concerns and fear of biological events. But in recent years, Xi Zhiyong's team has conducted mosquito release experiments on two small islands, Shazi Island in Nansha, Guangzhou and Dadaosha Island in Panyu, basically eliminating the local Asian tiger mosquito population.

Xi Zhiyong, Sun Yat-sen University

The reason why these two islands were chosen for the experiment is mainly because they are equivalent to two closed testing grounds, which are convenient for verifying the effectiveness of the experiment. The current experimental results are significant, and Xi Zhiyong's team has always been confident in this biotechnology.

The lifespan of female mosquitoes is 37-74 days. Female mosquitoes can lay 200-300 eggs at once, and female mosquitoes can lay 6-8 eggs in their lifetime. This means that female mosquitoes can produce 2400 mosquitoes in their lifetime, with over 5 million in two generations. So the amazing reproductive ability is an important reason why mosquitoes have been surviving to this day.

Wild mosquitoes

We also hope that the team of Xi Zhiyong from Sun Yat-sen University will succeed in eradicating most mosquitoes. Even in the wild in summer, there is no need to worry about being bitten by mosquitoes wearing short sleeves.

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