(A) Speed of P. berghei, P. yoelii and P. falciparum sporozoites 5-120 min after inoculation in box and whisker plots with whiskers displaying the 10-90 percentiles and values below and above the whiskers shown individually. Horizontal lines show the median speed at each time point. Comparisons among the species showed statistically significant difference in sporozoite speeds at the 20 min time point (Kruskal-Wallis test, ****p<0.0001 for both comparisons) and the 120 min time point (Kruskal-Wallis test, **p<0.006 for both comparisons). (B) Linear regression of apparent speed shows a more rapid decrease for P. berghei (slope = -0.005) than for P. yoelii and P. falciparum (slopes = -0.002). Symbols indicate mean values +/- standard deviation. A varying number of videos were processed for each time point after inoculation, using the same data set used for Figure 3: P. berghei; 5 min (3 videos/203 tracks), 10 min (6 videos/292 tracks), 20 min (4 videos/184 tracks), 30 min (6 videos/235 tracks), 60 min (7 videos/162 tracks), and 120 min (6 videos/151 tracks). P. yoelii; 5 min (7 videos/714 tracks), 10 min (16 videos/1514 tracks), 20 min (4 videos/415 tracks), 30 min (4 videos/319 tracks), 60 min (4 videos/255 tracks), and 120 min (4 videos/180 tracks). P. falciparum; 5 min (6 videos/389 tracks), 10 min (6 videos/464 tracks), 20 min (3 videos/184 tracks), 30 min (2 videos/195 tracks), 60 min (2 videos/239 tracks), and 120 min (2 videos/103 tracks). 