The larva of an insect makes a hormone which keeps it from changing into a pupa until it has reached its full growth. Recent experiments with this substance have produced both dwarf and giant ...

hormones and semiochemicals to enhance sterile male behavior, and quality control and management of the reared and released insects. The decision as to which species are included in the activities of ...

Now insect hormones promise to provide insecticides that are not only more specific but also proof against the evolution of resistance The first generation is exemplified by arsenate of lead; the ...