Adult sa509 homozygous mutants show abnormal swimming behavior. 10’ spontaneous swimming behavior box-plot analyses; * P < 0.05. sa509 mutants show evidence of impaired movement, as indicated by significant decreases in distance, velocity, and time spent moving. Thigmotaxis (as well as acceleration, mean mobility, and frequency of mobility) were not significantly different between wild-type siblings and sa509 mutants.