Associate Certified Entomologist (ACE) Practice Exam

What is an example of an oxadiazine?

1. Imidacloprid

2. Indoxacarb

3. Chlorpyrifos

4. Malathion

The correct answer is: Indoxacarb

Indoxacarb is an example of an oxadiazine because it contains the specific oxadiazine structure in its chemical composition. Oxadiazines are an important class of insecticides known for their mode of action, which involves blocking the sodium channels in the nerve cells of insects. This disruption can lead to paralysis and death of the targeted pest. In the context of pest management, indoxacarb is particularly useful because it is effective against a wide range of insects, including some that have developed resistance to other classes of insecticides. Its selectivity and low toxicity to non-target organisms further enhance its appeal in integrated pest management strategies. The other substances listed do not belong to the oxadiazine class. Imidacloprid is a neonicotinoid, Chlorpyrifos is an organophosphate, and Malathion is a carbamate, each having distinct modes of action and chemical structures that differentiate them from oxadiazines. Understanding these classifications helps in selecting appropriate pest control methods and managing resistance in agricultural and urban contexts.