Even if we're not releasing mosquitoes, why do we need to breed them in captivity?
There's a few reasons...
If we're curious about a modern population, we can compare and use them as a standard.
However, not all populations of Ae. aegypti spread every disease.
Why is that?
Scientists need to know!
journals.plos.org/plosntds/artic…
There's all sorts of cell lines, advanced handling machinery, molecular tools, that aren't available for all insects.
Sometimes, for a number of reasons, fruit flies just can't get the job done.