ABSTRACT
Bioassays using insects have been used for several years as a means of elucidating chemical components. Successful mass rearing methods and testing designs have eliminated much of the unreliability of earlier bioassays. The term "bioassay" covers a broad category of evaluating candidate compounds as to their effects on the test animal. Injection has been used by many investigators during the formative years of Juvenile hormone (JH) bioassays. JH deranges the normal physiological processes associated with development and metamorphosis of insects. Attractants have great potential for survey and detection of potential pest species and may have potential for controlling pest populations. Sex attractant are chemical messengers produced by one sex to lure and sexually excite the opposite sex for mating. Repellents provide protection for man and animals against annoying insect pests such as mosquitoes, flies, ticks, fleas, and chiggers. Antifeedants differ from repellents in that they do not repel the insects, but inhibit their feedings.
