. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 202 K. R. JOHN, M. SEGALL AND L. ZAWATSKY 70 - UJ < 50 - O. tr 30 H II 1 1 1 1 1 1 1 II SS 2200 2400 0200 0400 SR TIME IN HOURS FIGURE 1. Pattern of migration of double cones during first night of darkness. • Group A, O group E, and 3 group F. SS = sunset, SR = expected sunrise, — = mean values. merits. There was no change in the difference hetween the lengths of short and long segments for eyes fixed at different times. The patterns of photomechanical changes during the course of the first night are shown for douhle cone
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 202 K. R. JOHN, M. SEGALL AND L. ZAWATSKY 70 - UJ < 50 - O. tr 30 H II 1 1 1 1 1 1 1 II SS 2200 2400 0200 0400 SR TIME IN HOURS FIGURE 1. Pattern of migration of double cones during first night of darkness. • Group A, O group E, and 3 group F. SS = sunset, SR = expected sunrise, — = mean values. merits. There was no change in the difference hetween the lengths of short and long segments for eyes fixed at different times. The patterns of photomechanical changes during the course of the first night are shown for douhle cones in Figure 1, and for single cones in Figure 2. Each graph is a composite of results from experimental groups A, E, and F. The points on the graph within a group are not hased upon equal numbers of fish because some of the eyes did not produce useful histological sections. In Figure 1, the points for group A at 0100 hr., 0200 hr., and 0400 hr. represent three fish; all other points represent 4 fish. The point for group E at 2100 hr. represents one fish and all other points represent two fish. Each point for group F represents two fish. In Figure 2, the points for group A at 0100 hr. and 0400 hr. represent three fish ; 0200 hr., two fish; all other points 4 fish. In group E, the point at 2100 hr. represents one fish, and all other points represent two fish. Each point for group F represents two fish. 70 - 50 - Q_ tr 30 H. SS 2200 2400 0200 0400 SR TIME IN HOURS FIGURE 2. Pattern of migration of single cones during first night of darkness. • Group A, O group E, and 3 group F. SS = sunset, SR = expected sunrise, -- = mean 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
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
