A tardigrade walking. Image: Nirody et al, PNAS 2021
ABSTRACT breaks down mind-bending scientific research, future tech, new discoveries, and major breakthroughs.
Advertisement
The results reveal that “tardigrade walking replicates several key features of walking in insects despite disparities in size, skeleton, and habitat,” according to a new study published in Proceedings of the National Academy of Sciences. “I had always thought of tardigrades as being these kind of clumsy, fumbling, bumbly things that plod along,” Nirody said in a call. “That's a big misconception because they're ecologically so successful that it makes sense that they are good at locomoting to be able to find food. They've survived for so many millions of years and diversified into 1,000 species, so they're doing something right.” Nirody first started planning this experiment years ago with her colleague Daniel Cohen, an assistant professor of mechanical and aerospace engineering at Princeton University, who is the senior author of the new paper.
Advertisement
The team’s videos of the tardigrades reveal gaits that are analogous to walking patterns seen in much larger arthropods, a family that includes insects and crustaceans. For instance, both groups of animals tend to use the same stepping patterns regardless of speed, which sets them apart from vertebrates that employ different stepping patterns in gaits, such as a horse that trots, canters, or gallops.
Advertisement