. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 246 R. P. HENRY ET AL. ,W> --!*% out all gills. Further physiological differentiation was re- vealed when the dorsal and ventral epithelia were peeled apart and the individual layers examined. In the central but not the peripheral regions, Na+ + K+ ATPase activity was higher in the ventral portion of the epithelium. Ac- climation to low salinity (15 %o) for 36 h did not result in any increase in enzyme activity in either the gills or the coxal gland (data not shown); lack of short-term Na+ + K+ ATPase activation in Limiih
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 246 R. P. HENRY ET AL. ,W> --!*% out all gills. Further physiological differentiation was re- vealed when the dorsal and ventral epithelia were peeled apart and the individual layers examined. In the central but not the peripheral regions, Na+ + K+ ATPase activity was higher in the ventral portion of the epithelium. Ac- climation to low salinity (15 %o) for 36 h did not result in any increase in enzyme activity in either the gills or the coxal gland (data not shown); lack of short-term Na+ + K+ ATPase activation in Limiihts gills was also reported by Towle ?/«/. (1982). Carbonic anhydrasc activity The distribution of CA in Limu/us gills followed that of the Na/K ATPase, the pattern in most arthropod ion n Figure 3. Semi-tangenlial section through a presumptive ion transporting cell in the ventral portion of the thick region. Note the elaborate membrane tubule network originating from infoldings of the hasal membrane, the dense population of mitochondria, and the basal nucleus (n). Apical region of the cell is under the cuticle (c), and the basal region is in contact with the hemolymph (h). -4515, scale bar = 1 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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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
