Shown here
is a yellow
mite crawling among fungi growing on a citrus plant.
It's
just one of the many high-magnification, psuedo-color photos produced
by Eric Erbe, a botanist, and Chris Pooley, a computer specialist. They
both work at ARS' Nematology Laboratory in Beltsville, Maryland.
There,
Erbe has developed a special holder for steadying mite specimens while
they're frozen in liquid nitrogen at -320 degrees Farenheit (That's 352
degrees below the temperature at which water turns to ice!). This technique
allows him to photograph the critters up to 50,000 times their actual
size. It also avoids squashing the mites, which can happen when glass
slides are used for light microscope examination.
Using
these photos, scientists known as acaroligsts (ack-ar-ahlogists)
can study the shape and size of all of a mite's leg and body parts. This
makes them easier to identify, notes Ron Ochoa, an acarologist at ARS'
Systematic
Entomology Laboratory, also in Beltsville.
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