How does Culex tarsalis survive the winter?

Culex tarsalis, a species of mosquito, has a specific overwintering strategy that allows it to survive cold conditions. This mosquito overwinters as an adult, typically in a dormant state. During cooler months, adult females seek sheltered locations such as tree holes, animal burrows, or even human-made structures where temperatures are milder. In this dormant state, they are able to survive until warmer temperatures return, prompting them to emerge for feeding and reproduction in the spring.

This strategy is advantageous for several reasons. It enables the mosquito to avoid the harsh conditions that would be life-threatening in other life stages, such as eggs or larvae, which are more susceptible to freezing. By surviving as an adult, Culex tarsalis can quickly take advantage of suitable breeding conditions when they arise, ensuring the continuation of their lifecycle.