FIGURE 3.

Ultraviolet avoidance is mediated by a visual process, and it depends on the presence of functional UV cones. (A) Preferences of eyeless chokh mutant fish and their wildtype siblings for the UV, blue and red stimuli vs. darkness. White bars show the wild type animal results and black bars the blind mutant results (N = 18). (B) Preferences of sws1::TeNT-CFP transgenic fish with inactive UV cones vs. their wildtype siblings. The stimuli consisted of darkness vs. varying intensities of the UV, blue or red stimuli as in part A and Figure 1. The white bars show the wild type fish results and the black bars show the transgenic animal results (N = 8, bars in both experiments are mean ± SEM with animals from different clutches. Stars represent a p-value < 0.05 in an unpaired t-test comparing the two conditions).