What contributes to a pest's ability to become resistant to pesticides?

The ability of a pest to become resistant to pesticides is significantly influenced by the repeated use of the same pesticide class. When a single class of pesticide is used repeatedly, it exerts selective pressure on the pest population. Pests that have genetic traits allowing them to survive exposure to that pesticide will continue to reproduce, leading to a population that is increasingly tolerant or resistant to the chemical. Over time, this can result in a situation where the effectiveness of the pesticide diminishes, requiring higher doses or alternative strategies to manage the pest.

While factors like pest infestation frequency, genetic mutations, and pesticide storage can play a role in pest management, they do not directly contribute to the development of resistance in the same pivotal way as the repeated application of a specific pesticide class does. Continuous use creates an environment conducive to the selection of resistant individuals, leading to a reinforced cycle of resistance within the pest population.