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. 2014 Dec 10;9(12):e114708. doi: 10.1371/journal.pone.0114708

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© 2014 Paskin et al

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.

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Graph showing escape responses as a measure of the severity of phototactic behavior. The escape index () is based on the number of worms that leave Q1 (direct light), where a value of 1 indicates all worms have left Q1. Thus, higher values indicate stronger photophobic responses. At 30 seconds, the data indicate that UV wavelengths elicited a significantly stronger escape response, distinct from both controls (p<0.001) and all other wavelengths (p<0.01); while IR wavelengths produced an opposite, attractive response (p<0.001). All time points are significantly different from controls (p<0.001) by two-way ANOVA, except for red at 1.5 minutes (p<0.01) and 2 minutes (not significant). Note the latter data indicate by 2 minutes worms have returned to the direct red light source in Q1.

Inline graphic — Graph showing escape responses as a measure of the severity of phototactic behavior. The escape index () is based on the number of worms that leave Q1 (direct light), where a value of 1 indicates all worms have left Q1. Thus, higher values indicate stronger photophobic responses. At 30 seconds, the data indicate that UV wavelengths elicited a significantly stronger escape response, distinct from both controls (p<0.001) and all other wavelengths (p<0.01); while IR wavelengths produced an opposite, attractive response (p<0.001). All time points are significantly different from controls (p<0.001) by two-way ANOVA, except for red at 1.5 minutes (p<0.01) and 2 minutes (not significant). Note the latter data indicate by 2 minutes worms have returned to the direct red light source in Q1.