Figure 1. Drosophila Larvae perform negative anemotaxis.

A. In air-speed gradients, the larvae navigate down the gradient. The colors of the tracks represent the time from the beginning of the experiment (blue) to the end (orange). Snapshots of the initial positions of larvae in the center of the agar plate are shown B. Navigational index in 3–1 m/s and 5–2 m/s gradient compared to no-gradient conditions. In the box plot the median is indicated by the red horizontal line. Box boundaries represent first and third quartiles, whiskers extend to the most extreme data points not considered outliers. The outliers are indicated by red + C. Larvae alternate periods of runs and turns D. An example of a reorientation event where a larva perpendicular to the direction of the gradient accepts a head sweep and extends a run in a favorable direction is shown. P-values and N of animals are shown in Data S1 and Table S2, respectively).