Well, the way i see it, uv got about 4-5 main options...
-Explorers/ cataloguers - the people that find and identify new species (a job i'm sure we'd all love)
-Biologists/ geneticists - i.e. drosophila work - finding out the genes and *internal workings* of insects
- Exterminators - speaks for itself...
- Breeders/ feeders/ zoo keepers - the people that grow them for food or for the pet trade
...and probably a few others i've forgotten...