. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. O '00 A. B I 4 7 10 13 16 19 22 17 20 23 26 29 2 APRIL JUNE FIGURE 2. The long-term cycle of activity for group 3 (A) which was studied in Evanston. 111., and that for group 4 (B) which was studied in Woods Hole, Mass. For explanation of D and E, see text. 2A) and for group 4 (Fig. 2B) show the minor peaks of a cycle with periods of lower activity on either side. It is also evident that the curve for group 3 can be superimposed on those for groups 1 and 2 from points A to C in Figure 1. Further- more, the curve for group 4 s
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. O '00 A. B I 4 7 10 13 16 19 22 17 20 23 26 29 2 APRIL JUNE FIGURE 2. The long-term cycle of activity for group 3 (A) which was studied in Evanston. 111., and that for group 4 (B) which was studied in Woods Hole, Mass. For explanation of D and E, see text. 2A) and for group 4 (Fig. 2B) show the minor peaks of a cycle with periods of lower activity on either side. It is also evident that the curve for group 3 can be superimposed on those for groups 1 and 2 from points A to C in Figure 1. Further- more, the curve for group 4 simulates those for groups 1 and 2 from points B to C in Figure 1, and also that for group 3 from D to E in Figure 2A. It was thought that the clams in each of the first three groups were probably in synchrony with one another since they were reported to have been collected in the same area of the Virginia coast. Examination of the activity records of the indi- vidual animals of a single group supports this assumption. Within a group, all the individuals have their maxima and minima occurring within a particular 48-hour pe- riod. In group 4, the variation is even less. With the exception of one animal, all the latter showed their highest observed activity on June 17 and a secondary peak of activity on June 24. All the clams of this group had their lowest observed activity. 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
