. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 6B. 2 4 1 Ion is 0 2 4 1 lou rs 6 FIGURE 6. Experiments comparing planula settlement on pinnules from Schizobranchia and Edistylia; (A) separate dish design, (B) competitive design. Time elapsed following the addition of 25 planulae to each trial dish is plotted on the abscissas. The ordinates designate the mean number of planulae attached in all trials for each experimental design. (Fig. 7). During elongation the cavity within the planula narrowed and some- times nearly disappeared. Simultaneously the greatest diameter of t
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 6B. 2 4 1 Ion is 0 2 4 1 lou rs 6 FIGURE 6. Experiments comparing planula settlement on pinnules from Schizobranchia and Edistylia; (A) separate dish design, (B) competitive design. Time elapsed following the addition of 25 planulae to each trial dish is plotted on the abscissas. The ordinates designate the mean number of planulae attached in all trials for each experimental design. (Fig. 7). During elongation the cavity within the planula narrowed and some- times nearly disappeared. Simultaneously the greatest diameter of the elongating planula shifted from anterior to posterior. The greater thickness of the posterior entoderm probably accounted for the posterior bulge of maximally elongated planulae (Fig. 7). The orientation of attachment (anterior, posterior, or lateral) had no visible effect on the shape of a planula upon elongation. Data were obtained on the time between attachment and complete elongation for 25 planulae. Elongation required from to 11 min (x = 4 min, — ). 8. 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
