Deer keds
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This blood-feeding fly sacrifices its sight after finding a host
This blood-feeding fly sacrifices its sight after finding a host - Date: - June 2, 2026 - Source: - Aberystwyth - Summary: - Deer keds rely on flight and vision to find a host, but everything changes once they land. After shedding their wings forever, these parasites reduce the activity of key vision-related genes by about half. Scientists believe they are effectively trading sharp eyesight for extra energy that can be used for feeding and reproduction.
Parasitic fly 'sacrifices sight' after finding host, study shows
Parasitic fly 'sacrifices sight' after finding host, study shows Sadie Harley Scientific Editor Robert Egan Associate Editor Deer keds—biting flies found across Europe, Asia, Africa and the Americas—use their eyes and flight to locate a host, typically deer, but occasionally humans or other mammals. Once they land, however, they shed their wings permanently and spend the rest of their lives crawling through fur and feeding on blood. A sensory trade off Researchers at Aberystwyth University...