For more than three centuries scientists have believed that human sperm swim by swishing their tails in a side-to-side, symmetrical motion. But that’s because we’ve been looking at them with 2D microscopes.
Using state-of-the-art 3D microscopy, a piezoelectric device, and mathematics, researchers in Mexico discovered how sperm really move: They spin, with a wonky asymmetrical wiggle. The researchers reported their discovery today in the journal Science Advances.
“It’s 2020 and we all thought we knew how sperm actually swim, and we couldn’t have been more wrong,” says Hermes Gadêlha, a senior lecturer in the Department of Engineering Mathematics at the University of Bristol. Gadêlha collaborated on the project with colleagues at the Image and Computer Vision Laboratory at the National Autonomous University of Mexico.