Range: ±40 µm/sec
||Benjamin Bower, Sarah Fisher, Candy Fu, Colin Todd, Determining the effect of copper sulfate concentration on the swimming speed of Tetrahymena thermophila, The Expedition Home > Vol 2 (2012) > Bower link abstract & p.6 2nd paragraph
||"Cell speed was determined by capturing the organism’s movement using a DinoXcope camera, before analyzing the videos with CellTrack and ImageJ software. Copper sulfate concentrations of 1 ppm, 3 ppm, and 5 ppm were used, as well as both medium and distilled water controls."
||"Tracking the speed of generally slow-moving cells showed a trend of Tetrahymena thermophila having the lowest speed (0.25 +/- 0.03 mm/sec BNID 111434) at the highest copper concentration (5 ppm). However, when measuring speeds of generally fast-moving cells, there was a trend towards Tetrahymena thermophila showing the highest speed (0.35 +/- 0.04 mm/sec) at the highest copper concentration (5 ppm)." "The displacement data shows faster movement at higher concentrations of CuSO4, ranging from 0.27 mm/sec, to 0.32 mm/sec, to 0.35 mm/sec for 1 ppm, 3 ppm, and 5 ppm respectively."