. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 2 M JAN 50 4 M DEC 4 M JAN 12345678 9 DISTANCE I 23456789 FROM EDGE cm) FIGURE 7. Comparison of observed (solid line) and expected random (dashed line) distributions of edge distances of settled larvae. Expected distributions were calculated by multiplying the total number of larvae by the amount of area in the distance interval. larvae were lying on the bottom of the chamber after one hour, only occasionally swimming up off the bottom. By hours, all larvae had ceased swimming. This is in contrast to the dark experiment
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 2 M JAN 50 4 M DEC 4 M JAN 12345678 9 DISTANCE I 23456789 FROM EDGE cm) FIGURE 7. Comparison of observed (solid line) and expected random (dashed line) distributions of edge distances of settled larvae. Expected distributions were calculated by multiplying the total number of larvae by the amount of area in the distance interval. larvae were lying on the bottom of the chamber after one hour, only occasionally swimming up off the bottom. By hours, all larvae had ceased swimming. This is in contrast to the dark experiment in the lab (Table VI) in which almost half of the larvae were still active after two hours. Thus it appears that larvae can swim longer in lower light environments. This would be important to larvae swept into deeper water. What happens if larvae do not find a suitable substratum for settlement? It has already been shown that larvae prefer dark substrata over light (Table III). This result is seen again in the larval swimming experiment (Fig. 10). In the roof and shade treatments the majority of larvae settled within the first twenty minutes. The 300 LIGHT INTENSITY (AiE/mVs) 200 100. 10 20 DISTANCE FROM EDGE OF PLATE (mm) 30 FIGURE 8. Light intensities measured on the undersides of settling panels. Points labeled "m' correspond to mean "edge distances" of settled larvae at respective 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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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
