What is a potential consequence of overusing aquatic pesticides?

The potential consequence of overusing aquatic pesticides is the development of pesticide-resistant species. When pesticides are applied frequently and in large quantities, it creates a selective pressure on target organisms. This means that while the pesticides may initially control pest populations, individuals within those populations that possess or develop genetic resistance to the chemicals will survive and reproduce. Over time, this can lead to a significant increase in the proportion of resistant individuals, making it increasingly difficult to manage those pests effectively using the same pesticides. This phenomenon can disrupt the management of aquatic ecosystems, as the intended control of specific pest species becomes less effective and may lead to the need for higher doses or new, more potent chemicals, further complicating ecological balance and sustainability efforts.