Mosquitoes and the West Nile Virus Still Affect the United States – and the World


2. Mosquito Life Cycle

The life cycle of a mosquito is completed in four stages. The first stage is the egg stage. Mosquito eggs are laid on the surface of the water in a lake, pond, or even puddle. These eggs hatch into larvae that feed on organic material and algae in the water.

Next is the pupa stage, which also happens in the water. The first three stages of a mosquito’s life last between 5 and 14 days. As the pupae float on the surface of the water, the adult mosquitoes emerge. Mosquitoes that suck blood can live from about a week to several months, depending on their sex, species, and weather conditions.