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. 2018 Nov 28;12:280. doi: 10.3389/fnbeh.2018.00280

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Copyright © 2018 Brockmann, Basu, Shakeel, Murata, Murashima, Boyapati, Prabhu, Herman and Tanimura.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Effects of lighting conditions on search behavior. Time plots of radial distances for search trajectories induced by different food rewards and different lighting conditions. (A) Drosophila: light condition / 0.2 M sugar-fed n = 14. (B) Drosophila: dark condition / 0.2 M sugar-fed n = 12. (C) Apis mellifera: light condition / 2.0 M sugar-fed n = 9. (D) A. mellifera: dark condition / 2.0 M sugar-fed n = 10. Black lines: walking trajectories with returns to location of the sugar drop; gray lines: no returns. Red lines: threshold distances to identify a return to the sugar drop location (see experimental procedures). The upper red line (r1): Drosophila r1 = 4 mm, A. mellifera r1 = 12 mm); lower red line (r0): Drosophila r0 = 2.5 mm, A. mellifera r0 = 7 mm); red dots: returns to the location of the sugar drop.