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World’s fastest ant sprints the equivalent of a 1-second 200-meter dash

World's fastest ant sprints the equivalent of a 1-second 200-meter dash

The Saharan silver ant is officially the fastest of the world’s 12,000 known ant species, clocking 855 millimeters per second, researchers say.

The six-legged sprinter covers 108 times its body length per second, a feat topped only by two other creatures: the Australian tiger beetle and the California coastal mite.

To run 100 times his body length as quickly, the fastest man in the world, Usain Bolt, would need to sprint the 200-meter dash in less than a second.

Making the exploit even more remarkable, the Saharan silver ant hits top speed racing at midday across desert sands that reach 60 degrees Celsius (140 degrees Fahrenheit), the researchers reported in the Journal of Experimental Biology.

A quartet of researchers from the Universities of Ulm and Freiburg in Germany tracked down Cataglyphis bombycina in the Tunisian desert and set up a field lab as a racecourse.

“Once we had located a nest, it was simply a matter of connecting an aluminum channel to the entrance and placing a feeder at the end to lure the ants out,” said lead author Sarah Pfeffer. “They shuttled back and forth in the channel, and we mounted our camera to film them from the top.”

Pfeffer and her team also excavated a nest and transported it back to Germany, where they recorded C. bombycina’s running prowess in cooler climes.

As expected, when the temperature dropped to a chilly 10 C the ant slowed down by more than a third.

At top speed, the Saharan silver easily outpaces its nearest ant competitor, Cataglyphis fortis, despite having significantly shorter legs. It does this by swinging its 5-mm appendages at speeds of up to 1,300 mm per second.

The length of the ant’s strides increased fourfold as it shifted into high gear, they found.

The scientists also discovered that at its fastest C. bombycina switches from running to a gallop, with all six feet off the ground at regular intervals.

Saharan silver ants are active outside their nests for only about 10 minutes a day, during which they search for heat-stricken lizards and other prey that they can pick apart and carry home.

Video of the ants in motion:

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