Figure 1 | Scientific Reports

Figure 1

From: Social signaling via bioluminescent blinks determines nearest neighbor distance in schools of flashlight fish Anomalops katoptron

Figure 1

Frequency-dependent light stimuli transmitted by artificial light organs mediate changes in positioning, swimming speed, blink frequency and light organ occlusion of A. katoptron. (a,b) Example trajectories of A. katoptron (60 s) without (a) and with (b) a 1 Hz light stimulation of the fish dummy. (c) Relative positioning in exit or center area of isolated A. katoptron during different light stimuli (DC; 0.5, 1, 2 Hz) (n = 5). (d) Swimming speed of isolated A. katoptron during different light stimuli (DC; 0.5, 1, 2 Hz) (n = 5). (e) Blink frequencies of isolated A. katoptron induced by different light stimuli (DC; 0.5, 1, 2 Hz) (left) in comparision to blink frequencies detected in a small group of five individuals in the reef tank (GC) (right) (n = 5). (f) Mean light organ exposure and occlusion times during different light stimuli (DC, 0.5, 1, 2 Hz) (left) in comparision to exposure and occlusion times measured in a small group of five individuals in the reef tank (GC) (right) (n = 5). Figures were created with SigmaPlot 12.0 (www.sigmaplot.co.uk) and processed with CorelDraw Graphics Suite 2017 (www.coreldraw.com). DC, dark control; GC, group control. Significance values are reported as *p < 0.05, **p < 0.01, ***p < 0.001. Error bars indicate ± SEM.

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