So when he woke up the next morning he was dead?
A science fiction movie just explained an insect eradication technique to me: Expose males to sterilizing radiation. Then when they have offspring, the offspring will be sterile, and after a few generations the species will be extinct.
A … bit of a reasoning gap there.
Now, messing up their genome so that their offspring were not viable might work, if these modified insects were reintroduced each generation. Breeding or engineering the flies to be stronger and sterile might work, if they could compete with normal males and make the latter starve — again given that this were repeated. Or introducing a terminator gene so that offspring were sterile could be a good strategy. All sorts of hand-waves work. Just not this one.
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