The results could help scientists devise new traps and repellants to help protect people from deadly mosquito-borne diseases.
In the dead of night, 200 bloodthirsty creatures make their way through a tented mesh arena the size of an ice rink. Scientists study them from afar, pumping in air scented with the aroma of human prey. They’re hoping to reveal just what triggers these deadly predators.
Taking this work out of the lab “really strengthens our understanding of [mosquito] behavior,” says Manuela Carnaghi, an insect behavioral ecologist at the University of Greenwich who was not involved with the research. “We’re moving toward more realistic studies.” Body odors, carbon dioxide , and body heat all alert mosquitoes to a person’s presence. The bugs pick up scents through olfactory neurons on their antennae—they can smell body odor up to 60 meters away—and use body heat to zero in on their target.
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