Ants specializing on one job such as snatching food from a picnic are no more efficient than "Jane-of-all-trade" ants, according to new research. "The question is, why is job specialization a good thing?" said Anna Dornhaus of The University of Arizona in Tucson. "We thought that the fact that ants have specialists was one of the things that made them so successful and live all over the world in all habitats in great numbers.
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