Scientists have released more than 200 million male Asian tiger mosquitoes from Shazai Island and Dadaosha, Guangzhou, where dengue fever is serious. These mosquitoes lose their reproductive capacity by briefly exposing themselves to gamma rays and infecting three different types of Walbacterium. Male mosquitoes are also fed sugar to make them stronger and more attractive to female mosquitoes during the mating season, and the eggs laid by the females after mating with these males will not hatch. After two years of experiments, the wild mosquito population basically disappeared.
Researchers found that there were mosquitoes living on the island, but genetic analysis showed that they came from other places, probably by means of transportation. At first, the islanders were skeptical about the experiment, and only Shazai Island had one.
Although specially fed mosquitoes don't bite, islanders still feel uncomfortable releasing so many mosquitoes. But at the end of the experiment, there was a huge increase in the number of supporters, partly because the record of mosquito bites had fallen.
A hotel owner said that in the past there were so many mosquitoes that they dared not stay out for too long in the afternoon. This technology is a miracle. We used to be skeptical, but now we all support it.