The strategy at hand is self-destructing by nature. Per evolution basic theory, the gene most adapted to the environment and which produces more offsprings, sur

The strategy at hand is self-destructing by nature. Per evolution basic theory, the gene most adapted to the environment and which produces more offsprings, survives. Therefore, offsprings of unmodified mosquitos have twice the chance to reproduce, as both males and females can reproduce and both will yield unmodified males and females. I wouldn't know the rate, but even if slowly, unmodified strain will come back, unless it is overwhelmed first. In which case both are extinct and unmodified can come back imported from other countries. There need be no female preference for this to happen, but of course if they evolve to detect modified males it would accelerate the rate which modified mosquitos get extinct. So, even if there damage from the experiment to the ecosystem, it would self heal in this case. (and apparently no major side-effect happened in Brazil) Edit: my understanding, I'm not even from this area