Take that, you ants!

LiveScience.com (via Yahoo!): Vicious ants made to attack their own

They may be tiny, but Argentine ants can kick some ant butt. This invasive species has nearly wiped out native ants in California.

Now scientists have discovered a way to turn one of the ants' strongest weapons into a weakness.

By altering the identifying chemicals coating the ants' bodies, researchers turned typical cooperative behavior into an ant-family feud.

Like most ants, the Argentine ant (Linepithema humile) relies on chemical tags to identify friend or foe. The chemicals are waxy and can't evaporate into the air like other animal communication chemicals called pheromones. The ants must make physical contact to smell them.

Due to time constraints, we now move to further action.

To try and outsmart the ants, the research team, led by UC Irvine evolutionary biologist Neil Tsutsui, whipped up batches of chemical compounds with a similar structure to those coating the Argentine ant colonies. When they coated one of the colony ants with the new compound, the other ants began attacking it as an enemy.

"Our preliminary results strongly suggest that by manipulating these chemicals on the exoskeleton, one could disrupt the cooperative behavior of these ants and, in essence, trigger civil unrest within these huge colonies," Shea said.

The work was described today at a meeting of the American Chemical Society in San Francisco.

"I think that this is really important, because they are finally starting to crack the code of how Argentine ants recognize and communicate with each other," said Brian Fisher, curator of entomology at the California Academy of Sciences. Fisher was not involved in the study.

Getting the chemical treatment was dizzying. First, Tsutsui and his team coated the inside of a vial with the chemical. They plopped an ant into the tube and spun it in a machine for 90 seconds to make the chemical stick.

"After all that shaking it's a little bit wobbly but usually it's still alive," Sulc said. "Then, we put it back into the Petri dish with ten of its friends from the same colony and then we observe how aggressive they are toward him."

The other ants immediately attacked, using their large mandibles, or jaws, to bite and tear off its legs, Sulc said.

The invasion of Argentine ants could ripple through the ecosystem, affecting more than just the native ants. For instance, the Coastal Horned lizard relies exclusively on the native ants for food, and as these ants dwindle so could the lizard.

Until now, neither pesticides nor trapping has thwarted the spread of the Argentine ants.

The scientists hope the strategy could be used in the future to finally check the spread of the Argentine ants.