. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. ACTIVITY OF THE CONTRACTILE VACUOLK 55 started to be formed until the peak is reached when the embryo was fully de- veloped. The subsequent fall represents the decrease of the vacuolar activity after the completed growth of the embryo. 22 o c z -I o 20 18 16 c o m x 14 12 m 8 o Z 6. 10 20 3O 40 50 60 70 TIME IN MINUTES 100 FIGURE 3. Successive changes in the amount of fluid expelled during the reproductive period. The abscissae give the time in minutes; the ordinates, the amount of fluid in M3 cal- culated for 1 sec. Data fr
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. ACTIVITY OF THE CONTRACTILE VACUOLK 55 started to be formed until the peak is reached when the embryo was fully de- veloped. The subsequent fall represents the decrease of the vacuolar activity after the completed growth of the embryo. 22 o c z -I o 20 18 16 c o m x 14 12 m 8 o Z 6. 10 20 3O 40 50 60 70 TIME IN MINUTES 100 FIGURE 3. Successive changes in the amount of fluid expelled during the reproductive period. The abscissae give the time in minutes; the ordinates, the amount of fluid in M3 cal- culated for 1 sec. Data from Table III. The contractile vacitole in individuals with abnormal reproduction in which the em- bryo underu'ent metamorphosis but persisted as an adult unthin the brood pouch The contractile vacuole of these abnormal Tokophrya (Rudzinska, in press) was studied in order to ascertain whether the presence of the young adult, completely enclosed within the mother and with its tentacles attached to the wall of the brood pouch, had any effect on the activity of the contractile vacuole of the mother. In the six abnormal Tokophrya studied, it was found that the mother developed large, supernumerary contractile vacuoles which pulsated at a faster rate than normal. This is shown in Table IV, which is to be compared with Table I. Of these abnormal individuals, four had been kept unfed. The remaining two were fed and in these the effect of feeding was evident by the still greater accelera- tion of the activity of the contractile 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
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
