Climate Change Impact on Mosquito Populations

Aedes albopictus, widely recognized as the Asian tiger mosquito, has been increasingly observed by residents like Abigail Krich-Starr in eastern Massachusetts. The emergence of more mosquitoes in urban areas raises questions about broader environmental trends.

Mosquitoes hold the grim title of the deadliest animal worldwide, a concern particularly for those noticing their growth in numbers. For instance, in Abigail’s neighborhood, outdoor activities have become challenging due to these insects. The Washington Post’s 2024 data analysis indicated that mosquito seasons in several US regions now extend for days or weeks longer.

Boston-area entomologist Doug Bidlack, associated with the East Middlesex Mosquito Control Project, notes that climate change contributes to warmer, wetter conditions favoring mosquitoes. These changes could impact mosquito behavior, habitats, and the way diseases they carry are transmitted.

To counteract the rising mosquito presence, Vivian Zeng, the director of public health in Sudbury, Massachusetts, offers practical advice:

• Review local mosquito surveillance data to assess risk levels.
• Plan outdoor events outside of peak mosquito hours, typically from dusk to dawn.
• Wear long-sleeved apparel to minimize skin exposure.
• Use EPA-approved DEET repellents or permethrin sprays on clothing and gear.

This discussion is part of the Nature Quest segment by Short Wave, targeting listener inquiries about environmental changes. Readers are encouraged to contribute questions by sending a voice memo to [email protected].

Short Wave episodes are available without advertisements on platforms like Spotify and Apple Podcasts. Support for Short Wave comes through subscription options at Short Wave+ on plus.npr.org/shortwave.

The episode was produced by Hannah Chinn and Rachel Carlson, edited by Rebecca Ramirez, and verified by Tyler Jones. Jimmy Keeley contributed as the audio engineer.