[News Script: Screwworm fly] Part: 3 of 8
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SCREWWORM FLY 2-2-2-2-2-2-2-2-2
LONG OF PLANE
The program, in little more than two years,
has reduced screwworm infestation in the
Southwest by 90 percent. But a live-fly
barrier 100 miles wide is being maintained
along the U-S-Mexico border to prevent
infestation from Mexico. The barrier stretches
from the Rio Grande Valley to Arizona. Planes,
operating out of Del Rio, spread the sterile
flies along the border. A Department of
Agriculture employe rides in each plane,
dropping the boxes of flies at regular
intervals through a chute in the aircraft.
Scientists some time ago learned that the
female fly mates only once in her lifetime.
If she mates with a sterile male, her eggs
do not hatch. If sterile males are scattered
in large numbers over a wide area, the fly
population dies out.
Here’s what’s next.
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WBAP-TV (Television station : Fort Worth, Tex.). [News Script: Screwworm fly], item, May 17, 1964; (texashistory.unt.edu/ark:/67531/metadc960756/m1/3/: accessed August 16, 2018), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; crediting UNT Libraries Special Collections.