Mosquitoes Use Infrared Radiation to Locate Humans

Scientists at the University of California, Santa Barbara have made a groundbreaking discovery regarding the behavior of the Aedes aegypti mosquito. Apart from utilizing other cues, these mosquitoes also employ infrared radiation to locate their hosts. This finding holds the potential to enhance mosquito control methods and aid in reducing the spread of diseases such as dengue fever and malaria. The relevant research results were recently published in the journal Nature.

While many may perceive mosquito bites as temporary nuisances, in certain parts of the world, these bites can have severe, even fatal consequences.

Although male mosquitoes are harmless, female mosquitoes require blood to lay eggs. Scientists have studied how they locate hosts for over a century, revealing that these insects rely on a combination of sensory information from various distances, rather than a singular source.

The research conducted at the University of California, Santa Barbara sheds light on another sensory information avenue for mosquitoes in locating hosts: infrared detection. When infrared radiation combines with carbon dioxide and human odors, an infrared heat source equivalent to human skin temperature causes the mosquitoes' host-seeking behavior to double. Researchers have also identified the internal organ responsible for infrared detection in mosquitoes and its functioning principles.