What role do IGRs play in pest management?

Insect Growth Regulators (IGRs) are a crucial component of pest management strategies because they specifically target the growth and development of insects at various life stages. Unlike conventional insecticides that kill pests directly, IGRs function by mimicking hormones or disrupting normal hormonal processes that govern growth and maturation. This interference leads to developmental abnormalities, preventing insects from reaching maturity and reproducing effectively.

By targeting growth patterns, IGRs can significantly reduce pest populations over time without the immediate lethal effects of traditional insecticides. They are particularly valuable for managing pests that have developed resistance to other forms of chemical control since IGRs operate through different mechanisms and do not exert the same selective pressure that can lead to resistance.

In contrast, options that suggest elimination of all pest stages, enhancement of reproduction, or acting as attractants do not accurately reflect the function of IGRs. They specifically disrupt growth, making them a valuable tool in Integrated Pest Management (IPM) strategies aimed at reducing reliance on broad-spectrum insecticides and addressing pest populations sustainably.