Planarians Sense Simulated Microgravity and Hypergravity

Figure 4

Hypergravity impairs regeneration of small planarian fragments. General images of the different planarian groups in the LDC conditions at the end of Experiment 2 are shown in the upper panel. Note that at 8 g all planarians are dead. In the lower panel stereoscopic images of planarians show that, while control fragments regenerated properly, head fragments under 4 g conditions present an aberrant morphology. Moreover, no tail fragments were found, which means they died during the experiment.