What is one example of a biological control for mosquitoes?

Gambusia affinis, commonly known as the mosquitofish, is an effective biological control for mosquitoes. This small fish is known for its appetite for mosquito larvae, helping to reduce mosquito populations in aquatic habitats where they breed. By consuming the larvae before they can mature into adult mosquitoes, Gambusia affinis provides a natural method of pest control that aligns well with ecological principles. This approach minimizes reliance on chemical pesticides, which can have harmful effects on non-target species and the environment.

In contrast, the other options listed represent different types of pest control methods. Petroleum distillates and organophosphates are chemical substances used to control pests but are not biological control agents. Beneficial insects may refer to a variety of species that could assist in pest control, but they do not specifically highlight a well-established biological agent against mosquitoes like Gambusia affinis does. Therefore, the focus on a specific species known for its targeted actions against mosquito larvae underscores why it serves as a prominent example of biological control in managing mosquito populations.