male butterflies genetically engineered to kill females

To deal with certain pests, scientists have found a method to remove them by changing their DNA.

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A group of scientists has carried out a strange experiment to limit the reproduction of certain moths accused of ravaging fields and crops.

Genetically modified butterflies

The researchers published the results of this crazy study in Frontiers, January 29. They explain the course of the experience.

The process is quite simple. They recovered male moths (plutella xylostella) and changed their DNA by injecting them with a gene self-limiting. When this gene is transmitted to their female offspring, it prevents the caterpillar from surviving to adulthood, and therefore from reproducing.

Very promising results

After conducting a series of laboratory experiments, the scientists tested this method in the field. By spraying the genetically modified butterflies with a fluorescent powder, they were able to follow their every move.

Thanks to clever calculations, they were able to demonstrate that in just a few generations, this would considerably reduce pest population, and even to wipe it out completely if necessary.

An advantageous technique

The main advantage of this method is that it does not affect other species present in the same ecosystem, unlike pesticides, for example, which affect all fauna and even flora.

Professor Anthony M. Shelton of the Department of Entomology at Cornell University, lead author of the study, explained to Newsweek why this technique could be important for the future.