Figure 4.

C. elegans exhibits T_c-dependent navigation behaviors on spatial thermal gradients. (A) Schematic of navigation behaviors exhibited at temperatures relative to T_c (T_c is defined here as the temperature experienced 3–5 hr prior to the assay). T: ambient temperature. (B) Example trajectories of individual animals grown at either 15° (blue) or 25° (red) and placed at 20° on a shallow spatial thermal gradient. Note movement of animals toward cooler temperatures when T > T_c, and movement toward warmer temperatures when T < T_c. Trajectories are adjusted to the same starting point (white circles). Adapted from Luo et al. (2014a).