. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 420 EARL SEGAL AND PAUL A. DEHNEL 24-hour period the concentration difference between blood and external medium was approximately 5% sea water, a gradient to which no significance is attached. At all of the salinities, except 25% sea water, no natural deaths occurred within 48 hours. Within six hours limpets held at 25% sea water were extremely swollen. These animals were all dead by 24 hours. Body fluid concentrations. • DIKE ROCK , SCRIPPS O OPEN COAST, PUNTA BANDA • BAY , PUNTA BANDA • • 150 % •• 125 % Baseline •• 75 % ••
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 420 EARL SEGAL AND PAUL A. DEHNEL 24-hour period the concentration difference between blood and external medium was approximately 5% sea water, a gradient to which no significance is attached. At all of the salinities, except 25% sea water, no natural deaths occurred within 48 hours. Within six hours limpets held at 25% sea water were extremely swollen. These animals were all dead by 24 hours. Body fluid concentrations. • DIKE ROCK , SCRIPPS O OPEN COAST, PUNTA BANDA • BAY , PUNTA BANDA • • 150 % •• 125 % Baseline •• 75 % •• 50% 25 % 48 TIME IN HOURS FIGURE 1. Change in blood concentration, expressed as per cent sea water, as a function of time, in hours, for three populations of Aciuaca liiuatiila. Each point is the mean value for at least ten animals. Line at the 100% sea water value represents the baseline for the three populations. Experiments were run at 20° C. of control animals for all salinity experiments at the three collecting areas were determined, and differed only slightly from 100% sea water. No biological significance is attached to these differences. Animals in 125 and 150% sea water were isotonic with the media in three hours; in 50 and 75% sea water they were not. Furthermore, the lower the external concentration, the greater the gradient between blood and external medium. For example, at three hours, animals in. 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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