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

Credit: Science

4. Mosquito Ecology

Mosquitoes are everywhere! They are found in every land region on Earth except for Antarctica and several islands with freezing climates. For example, Iceland is a polar island that has almost no mosquito activity.

Colder climates are not conducive the life cycle of a mosquito. There are virtually no wetlands in these places, leading to only about 1,500 insect species, most of which were inadvertently brought there by humans. Very few species of mosquito can make it to adulthood in a subzero climate. In warm, humid climates, many mosquito species are active all year round. In colder regions they tend to hibernate, only being active for several weeks per year.