They're 5000 times faster than the blink of an eye.
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| © Ant Lab, YouTube A Dracula Ant's Jaws Snap at 200 Mph—Making It the Fastest Animal Appendage on the Planet |
By Emily Petsko, Mental Floss
As if Florida’s “skull-collecting” ants weren’t terrifying enough, we’re now going to be having nightmares about Dracula ants. A new study in the journal Royal Society Open Science reveals that a species of Dracula ant (Mystrium camillae),
which is found in Australia and Southeast Asia, can snap its jaws shut
at speeds of 90 meters per second—or the rough equivalent of 200 mph.
This makes their jaws the fastest part of any animal on the planet,
researchers said in a statement.
These
findings come from a team of three researchers that includes Adrian
Smith, who has also studied the gruesome ways that the skull-collecting
ants (Formica archboldi) dismember trap-jaw ants, which were
previously considered to be the fastest ants on record. But with jaw
speeds of just over 100 miles per hour, they’re no match for this
Dracula ant. (Fun fact: The Dracula ant subfamily is named after their habit of drinking the blood of their young through a process called "nondestructive cannibalism." Yikes.)
Senior
author Andrew Suarez, of the University of Illinois, said the anatomy
of this Dracula ant’s jaw is unusual. Instead of closing their jaws from
an open position, which is what trap-jaw ants do, they use a
spring-loading technique. The ants “press the tips of their mandibles
together to build potential energy that is released when one mandible
slides across the other, similar to a human finger snap,” researchers write.
They
use this maneuver to smack other arthropods or push them away. Once
they’re stunned, they can be dragged back to the Dracula ant’s nest,
where the unlucky victims will be fed to Dracula ant larvae, Suarez
said.
Researchers used X-ray imaging to observe the ants’ anatomy
in three dimensions. High-speed cameras were also used to record their
jaws snapping at remarkable speeds, which measure 5000 times faster than
the blink of a human eye. Check out the ants in slow-motion in the
video below.
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