. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 300 400 500 600 Wavelength [nm] 700 Figure 2. Spectral sensitivity of Calanopia americana. The percentage of copepods displaying positive phototaxis (upward swimming ± 30°) is plotted as a function of wavelength. All other symbols are as described for Figure 1. (Fig. 2). Positive phototactic responses significantly greater than the control value were found in the UVA (350, 380, 400 nm), with even greater response values from 420 to 580 nm (one-factor RM ANOVA. P < ; Dunnett's test, P ). The reverse migrator, Anom
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 300 400 500 600 Wavelength [nm] 700 Figure 2. Spectral sensitivity of Calanopia americana. The percentage of copepods displaying positive phototaxis (upward swimming ± 30°) is plotted as a function of wavelength. All other symbols are as described for Figure 1. (Fig. 2). Positive phototactic responses significantly greater than the control value were found in the UVA (350, 380, 400 nm), with even greater response values from 420 to 580 nm (one-factor RM ANOVA. P < ; Dunnett's test, P ). The reverse migrator, Anomalocera ornata, was similar to Centropages typicus in that it also responded to few wavelength stimuli (Fig. 3). RCD index values were signif- icantly less than the control value in the spectral region between 460 and 540 nm, with a sensitivity peak at 520 nm (one-factor RM ANOVA. P < : Dunnett's test. P ). 450 -. 300 400 500 600 Wavelength [nm] 700 Figure 3. Spectral sensitivity of Anomalocera ornata. The index of rate of change in direction (RCD) is plotted as a function of wavelength. All other symbols are as described for Figure Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Marine Biological Laboratory (Woods Hole, Mass. ); Marine Biological Laboratory (Woods Hole, Mass. ). Annual report 1907/08-1952; Lillie, Frank Rattray, 1870-1947; Moore, Carl Richard, 1892-; Redfield, Alfred Clarence, 1890-1983. Woods Hole, Mass. : Marine Biological Laboratory
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