A two patch dispersal system made of two 1.5 mL microtubes connected by a silicon pipe, filled with nutritive medium, used to quantify dispersal rate from cells inoculated in the start patch and allowed to move freely during 6 h
An illustration of the raw trajectory data extracted from videos
Different colours show different individual trajectories. The linearity differed among trajectories with some being very linear and others more tortuous (see arrows). Some very short (in time or space) trajectories correspond to non-moving cells.
Relationships between movement metrics (speed and tortuosity) and cell morphology averaged at the genotype level (N=88)
Lines show the fit of the most parsimonious ANCOVA model relating cell morphology to movement metrics, considering variation due to the dispersal status. Larger cells moved faster and less tortuous and the effect was additive.
Relationships between relative changes in movement metrics (speed and tortuosity) and cell morphology (N=132)
Each point is the difference between the disperser and residents across genotypes and replicates. Lines show the fit of the most parsimonious ANCOVA model relating cell morphology to movement metrics. If disperser cells were relatively larger than residents, they moved faster. In contrast, if dispersers were more elongated than residents, they moved slower. Relative changes in size and shape did not influence the relative tortuosity.
Overview of the genotypes used in the experiment
Details about genotypes used, the experimental system and the trajectory reconstruction.