Gambusia affinis is known for its effectiveness against which stage of mosquitoes?

Gambusia affinis, commonly known as the mosquitofish, is particularly effective in controlling larval mosquitoes. This species preys on mosquito larvae found in aquatic environments, thus significantly reducing the population of mosquitoes before they can mature into adults. By targeting larvae, Gambusia affinis interrupts the mosquito life cycle, preventing the emergence of adult mosquitoes, which are responsible for biting and disease transmission.

The other life stages, such as eggs and adults, do not present the same control possibility with this fish. For example, while adult mosquitoes are already in the flying and biting stage and are not vulnerable to predation by Gambusia affinis, eggs are laid in water but are not consumed by the mosquitofish. Therefore, focusing on the larval stage allows for a proactive approach in mosquito control, leveraging the natural predation behavior of Gambusia affinis effectively.