Can the world survive without mosquitoes and should we even try to find out?

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Can the world survive without mosquitoes and should we even try to find out?

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Sowjanya Pedada,  LA Post,  2025.

Scientists have developed gene editing technology that could wipe out malaria-carrying mosquitoes within subsequent  generations, offering hope against diseases like Malaria, which kills nearly 600,000 people each year. But as field trials approach, bioethicists warn that deliberately driving a species to extinction raises profound questions about our right to reshape nature. Communities in hard-hit regions now face a difficult tradeoff: accept ecological risks or continue losing lives to preventable mosquito-borne diseases. Mosquito-borne diseases extend far beyond Malaria. Dengue infects up to 3.9 billion people annually across 132 countries, causing approximately 40,000 deaths each year. Zika, documented in 89 countries, can cause severe congenital disabilities like microcephaly. The CDC calls mosquitoes the “world’s deadliest animal,” responsible for over 700,000 deaths each year.

In sub-Saharan Africa, scientists at Target Malaria have developed genetic modifications that render female mosquito offspring infertile, causing populations to collapse within a few generations in lab tests. “There are so many lives at stake,” said Alekos Simoni, a molecular biologist with the group. Their method uses male mosquitoes to spread ovary-disrupting genes throughout wild populations. Gene-driven mosquito extinction has ignited ethical debate. A recent study published in Science concluded that deliberately wiping out a species may be justifiable, but only under rare, extreme conditions. “These cases highlight the tension between the intrinsic value of a species and the benefits of eradicating a harmful pest,” said Clare Palmer, a bioethicist at Texas A&M. Environmental experts warn of ecological risks, but scientists stress that only a few mosquito species, mainly malaria-spreading Anopheles, would be targeted. “Extinction is not a likely outcome, nor even a desirable one,” said Tony Nolan of the Liverpool School of Tropical Medicine. “It’s not necessary to make the mosquito extinct to eliminate malaria.”