. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. SALT AND WATER BALANCE IN LUGWORMS RESULTS 183 The osmotic concentrations of centrifuged coelomic fluids of Ab. pacifica adapted to salinities from 29% SW to 97% SW are presented in Figure 2, Cl" concentrations in Figure 2, and Naf concentrations in Figure 3. Coelomic fluid/ medium ratios for osmotic, Cl~, and Naf concentrations are presented in Figure 4. PER CENT SEAWATER 600. 100 200 300 400 MEDIUM: mM CI" or NaCI 500 600 FIGURE 2. Relationship of osmotic and chloride concentration in coelomic fluid of Ab. pi-ici
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. SALT AND WATER BALANCE IN LUGWORMS RESULTS 183 The osmotic concentrations of centrifuged coelomic fluids of Ab. pacifica adapted to salinities from 29% SW to 97% SW are presented in Figure 2, Cl" concentrations in Figure 2, and Naf concentrations in Figure 3. Coelomic fluid/ medium ratios for osmotic, Cl~, and Naf concentrations are presented in Figure 4. PER CENT SEAWATER 600. 100 200 300 400 MEDIUM: mM CI" or NaCI 500 600 FIGURE 2. Relationship of osmotic and chloride concentration in coelomic fluid of Ab. pi-icifica to Cl" concentration of external medium. Diagonal line indicates equal internal and external concentration; solid circles, Cl~ concentrations; open circles, osmotic concentrations; Cl" concentrations for Arcnicola marina: 1, from Robertson (1949). The coelomic fluid of Ab. pacifica is slightly, but significantly, hyperosmotic to the medium at all salinities tested, by (CF/M = ± ; N = 60). There is no indication of increasingly hyperosmotic regulation by lugworms adapted to the lower salinities. The coelomic fluid is slightly, but significantly, hypo-ionic to the medium at all salinities with respect both to Cl", by (CF/M == ±; N==60), and to Na+, by (CF/M := ± ; N:=60). There are no statistically significant trends in changes of either osmotic or Na+ concentrations with lowering of external salinity. However, the Cl" concentration of the coelomic fluid of lugworms adapted to 97% SW is. 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, Al
Size: 1630px × 1533px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
