Abstract: One variation of a method includes: at a feeder module, subjecting a first set of cages to a first set of environmental conditions configured to promote deposition of fly eggs by adult flies, each cage, in the first set of cages, containing a fly population, in a set of fly populations, genetically modified to generate amounts of a target compound; at an incubator module, subjecting a second set of cages to a second set of environmental conditions configured to promote transformation of fly eggs into fly larvae; at a treatment module, subjecting a third set of cages to a third set of environmental conditions configured to promote generation of a target compound in fly larvae contained within the third set of cages; and, at a repopulation module, subjecting a fourth set of cages to a fourth set of environmental conditions configured to promote transformation of fly larvae into adult flies.