Scientists plan to trick Zika-carrying mosquitoes into breeding themselves out of existence - The Washington Post
This summer, a Silicon Valley tech company will have millions of machine-raised, bacteria-infected mosquitoes packed into windowless white vans, driven inland and released into the wild — or, at least, the streets of Fresno, Calif.
And, yes, Fresno County officials are encouraging this.
It’s all part of the “#Debug_Fresno” project, which aims to cut down on the number of Aedes aegypti mosquitoes, an unwelcome invasive species that arrived in California’s Central Valley in 2013. In addition to being potential carriers of the #Zika, dengue fever and chikungunya viruses, the Aedes aegypti also adapted rapidly to the area’s residential neighborhoods, to the chagrin of residents and officials alike.
“It’s a terrible nuisance, a terrible biting nuisance. It’s changed the way people can enjoy their back yard and it’s a threat for disease transmission,” said Steve Mulligan, district manager for the region’s Consolidated Mosquito Abatement District. “So we’re looking for new ways to eliminate it.”
To do so, district officials have partnered with tech companies to use an approach that has gained traction in recent years. Inside a lab, millions of the mosquitoes will be infected with Wolbachia bacteria, which changes the reproductive ability of males. Afterward, only those male mosquitoes — which don’t bite — will be released to mate with unsuspecting female Aedes aegypti.
Even if the females lay eggs, those eggs will never hatch. Eventually, officials hope to reduce the population of Aedes aegypti, generation by generation, until they are eliminated from the area.
This year’s mosquitoes are being bred and distributed by #Verily, a subsidiary of #Alphabet that was formerly known as #Google_Life_Sciences. Verily officials estimate that this year, they will release 1 million mosquitoes per week in Fresno County, more than 25 times last summer’s numbers. That is possible because they’ve developed ways to breed and separate male and female mosquitoes on a larger scale.