Honeybees Can Learn Foreign 'Languages'

A colony of honeybees. An unknown pathogen is pushing the industrious honeybee to disaster as scientists scurry to figure out what the cause is. Early results of a key study by the USDA and Pennsylvania State University point towards some kind of disease or parasite. About one-third of the human diet comes from insect-pollinated plants and the honeybee is responsible for 80 percent of that pollination, according to the USDA. CREDIT: Haraz N. Ghanbari/AP

They may "speak" different languages, but Asian and European honeybees living in the same hive can learn to translate each others' dances to help one another find food, a new study reveals.

Honeybees produce and store honey and build colonial hives from wax. The nine species of honeybees found worldwide diverged, in evolutionary terms, about 30 million to 50 million years ago and developed different dance "languages" that they use to tell each other where a tasty flower or choice nesting site is.

"The scouts perform the so-called bee dances inside the nest," said study leader Shaowu Zhang of The Australian National University. "The coordinates of distant locations are encoded in the waggle phase of this ballet, with the direction and distance to the food source indicated by the orientation and duration of the dance."

The duration of the "waggle dances" differs from species to species, even if bees are trying to communicate the same distance information.

"It's these differences which we can think of as distinct languages," Zhang said.

Zhang and his team mixed two species of honeybees, Asian (Apis cerana cerana) and European (Apis mellifera ligustica), together in a hive, and once they had adjusted to each other, the scientists trained one species to fly to a feeder set at varying distances from the hive.

When European honeybees were trained to find the feeder , Asian honeybees were able to decipher the dances of their European cousins and interpret where the feeder was. The same was true when the experiment was reversed.

"They can understand and communicate [with] each other," Zhang said.

Whether bilingual bees occur in nature though is uncertain, because "the different species of honeybees do not live together in nature," Zhang told LiveScience. "We established an artificially mixed colony for our experiments."

The team's findings are detailed online in the journal PLoS ONE. The study was funded by the National Natural Science Foundation of China and the Australian Research Council Centre of Excellence in Vision Science.

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