. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. C 0-3 3-6 6-9 9-12 HOURS 23456789K) DAYS 12 13 14 TIME FIGURE 5. Activity (A, 0 = operculum closed, = foot out, but not attached, = foot out and attached to substrate), ammonia excretion (B, in j/moles-g dry weight"1 • h ') and primary amine excretion (C, in ^moles • g dry weight ' • h ') over 14 days in Thais haemastoma directly transferred from 30 to 10%o. (x±, n = 12). and Stickle (1980) found a very small, yet statistically significant increase in body water content in T. haemastoma as the acclimation sa
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. C 0-3 3-6 6-9 9-12 HOURS 23456789K) DAYS 12 13 14 TIME FIGURE 5. Activity (A, 0 = operculum closed, = foot out, but not attached, = foot out and attached to substrate), ammonia excretion (B, in j/moles-g dry weight"1 • h ') and primary amine excretion (C, in ^moles • g dry weight ' • h ') over 14 days in Thais haemastoma directly transferred from 30 to 10%o. (x±, n = 12). and Stickle (1980) found a very small, yet statistically significant increase in body water content in T. haemastoma as the acclimation salinity was decreased from 30 to 10%o from 72% to 77%, 10%o yielding a beta of , still indicative of excellent volume regulation. This is in direct contrast to the pattern of body water regulation in Thais lapillus, where beta values range from to , depending on the temperature (Stickle el ai, in press). Although there is no significant change in the total amount of body water in snails acclimated to salinities between 5 and 30%o and the hemolymph of T. haemastoma is isosmotic to ambient seawater (Stickle and Howey, 1975; Hildreth and Stickle, 1980), it is possible that the distribution of water between the intra- and extracellular compartments might show a reciprocal change with salinity. Staaland (1970) was able to measure the volume of the extracellular space (as inulin space) in Bucciniim undatiim acclimated to several salinities and found that as salinity was raised from 10 to 35%o, the size of the intracellular fluid compartment decreased as the size of the extracellular compartment increased. The total amount of body water decreased and the concen-. 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
Size: 3192px × 783px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
