. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 124 11 I). PARK, CHRISTYXA E. MECCA AND ANNE B. ORTMEYER. 0 0 FIGURE 1. Four experiments showing percentage sexual forms in 10-hydra cultures exposed by the Loomis injection method twice daily to CO2 (D) ( in I and II, in III, and in IV), or to 100% Oa (A), or to room air ( • ). Fifty hydras per curve in I, 40 in IF. Ill and IV. (2) Bubbling (Loomis stock) (a ) CO, in air vs. CO,-frec air One hundred-hydra cultures in calcium-free I5VT were bubbled 22 hours daily lor 40 days, one with 5'/ CO., in air
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 124 11 I). PARK, CHRISTYXA E. MECCA AND ANNE B. ORTMEYER. 0 0 FIGURE 1. Four experiments showing percentage sexual forms in 10-hydra cultures exposed by the Loomis injection method twice daily to CO2 (D) ( in I and II, in III, and in IV), or to 100% Oa (A), or to room air ( • ). Fifty hydras per curve in I, 40 in IF. Ill and IV. (2) Bubbling (Loomis stock) (a ) CO, in air vs. CO,-frec air One hundred-hydra cultures in calcium-free I5VT were bubbled 22 hours daily lor 40 days, one with 5'/ CO., in air, another with ,-free air. The second and third times this experiment was done a third culture was exposed to standing room air. The results are shown in Figure 2. As in the injection experiments, hydras under nil experimental conditions began to differentiate sexually within 24 hours. In cultures bubbled with COo-free air, as well as in those bubbled with 5% CO., in air, the percentage of sexual forms reached a maximum between days 4 and 6, then decreased rapidly. Cultures bubbled with 5%' in air showed a increase' in percentage of sexual. 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
Size: 1602px × 1559px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
