Temnothorax rugatulus. Credit: Arizona State University
Jan. 16, 2017 (PhysOrg) -- As humans, we constantly strive for a good work-life balance. New findings by researchers at Missouri University of Science and Technology suggest that ants, long perceived as the workaholics of the insect world, do the same.
In fact, according to these researchers, it is imperative that some ants rest while others work to conserve food, energy and resources for the colony. And the larger the colony, the more important this work-rest balance becomes.
"It has been a long-standing question in the field as to why large colonies of ants use less per-capita energy than small colonies," says Dr. Chen Hou, assistant professor of biological sciences at Missouri S&T and research team lead. "In this work, we found that this is because in large colonies, there are relatively more 'lazy workers,' who don't move around, and therefore don't consume energy.
"We found that the portion of inactive members of a group increases in a regular pattern with the group size," Hou says.
The research team consistently observed that 60 percent of workers were not moving around in a 30-ant group, whereas this percentage increased to 80 percent when the group size increased to 300 ants.