This blood-feeding fly sacrifices its sight after finding a host

ScienceDaily
Jun 2, 2026, 8:26 am74 ptsTrending
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…

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