Evolution of Ant Waist: From Structure to Locomotion
The waist of Apocrita is not only a key taxonomic feature but also plays a crucial role in their remarkable biological diversity. Ants, in particular, possess a uniquely segmented two-part waist not found in other insect groups, highlighting its taxonomic significance. However, the functional role of the waist and the reasons behind its wide morphological variation remain unclear. To address these questions, I investigate the relationship between movement, exoskeletal structure, and muscle morphology using synchrotron-based CT imaging and computer simulations.
3D model of an ant abdomen rigged for movement
3D model of ant waist segments (petiole and postpetiole)
Sample scanning at DESY (Deutsches Elektronen-Synchrotron): Photo by Bernhard Bock