Summary
The levels of Na+, K+ ATPase were measured in gills fromPlatichthys flesus adapted to seawater and freshwater using a variety of experimental techniques. Na+, K+ ATPase was assayed directly in crude gill homogenates,3H-ouabain binding was determined in isolated, perfused gills and ouabainsensitive oxygen consumption measured in sliced gill filaments. These experimental approaches all failed to show any difference in Na+, K+ ATPase activity or in enzyme turnover rate in gills from seawateradapted and freshwater-adaptedPlatichthys. The results are discussed in terms of the marine origin of the flounder and the energetic demands of ion regulation in euryhaline fish.
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Stagg, R.M., Shuttleworth, T.J. Na+, K+ ATPase, quabain binding and quabain-sensitive oxygen consumption in gills fromPlatichthys flesus adapted to seawater and freshwater. J Comp Physiol B 147, 93–99 (1982). https://doi.org/10.1007/BF00689296
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DOI: https://doi.org/10.1007/BF00689296