Mosquitoes require water to live, particularly in the early stages, and get much of the nutrients they need through the organisms found in still, stagnant water. As they get older, they require less water. Only the female mosquito, which has a longer life span, actually bites and feeds on blood. Prior to hibernation, she will typically gorge on blood to get through the winter months.
In the dormant stage during cold weather, she can generally go as long as six months without eating or drinking. Once the weather warms up, she requires a meal more regularly. If she becomes trapped or otherwise unable to obtain a food source, she is likely to die within four days.