. The Biological bulletin. Biology; Zoology; Marine biology. RESPONSES OF SIPHONARIA TO OSMOTIC STRESS 105 ^tl %s. 24 48 72 hours Figure 4. Responses of attached animals to sudden salinity change. O O Hemolymph, hypoosmotic tanks; • • hemolymph, hyperosmotic tanks ; %S = per cent survival. initial value of 24%o to a final value of 4%o by the addition of fresh water. Similarly, two other tanks were quickly concentrated to a value of 74%o by the addition of a concentrated sea salt solution. The salinity changes were effected as quickly as possible in order to obtain an approximately instantaneou
. The Biological bulletin. Biology; Zoology; Marine biology. RESPONSES OF SIPHONARIA TO OSMOTIC STRESS 105 ^tl %s. 24 48 72 hours Figure 4. Responses of attached animals to sudden salinity change. O O Hemolymph, hypoosmotic tanks; • • hemolymph, hyperosmotic tanks ; %S = per cent survival. initial value of 24%o to a final value of 4%o by the addition of fresh water. Similarly, two other tanks were quickly concentrated to a value of 74%o by the addition of a concentrated sea salt solution. The salinity changes were effected as quickly as possible in order to obtain an approximately instantaneous change to a stress condition. After the alterations in salinity, hemolymph samples and a water sample were taken from each experimental salinity at the following time intervals: , , , , 3, 6, 12, 24, 48, and 72 hours. The Atf of the hemolymph and sea water samples were determined and per cent of the animals surviving in each tank at each time period was also recorded (Fig. 4).. 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 Lillie, Frank Rattray, 1870-1947; Moore, Carl Richard, 1892-; Redfield, Alfred Clarence, 1890-; Marine Biological Laboratory (Woods Hole, Mass. ); Marine Biological Laboratory (Woods Hole, Mass. ). Annual report; HighWire Press. Lancaster, Pa. [etc. ] : Lancaster Press, inc. [etc. ]
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