Abstract
THE special osmo-regulatory mechanisms of the marine teleosts were originally outlined by Homer Smith1; he postulated that these animals maintain a constant blood concentration lower than that of the external sea-water by continual drinking of sea-water and simultaneous excretion of ions mainly through the gills. In addition to this and the work of Keys2 on the common eel, several workers, Mullins3 and House4, have recently confirmed this theory of osmotic regulation by ion transport experiments in vivo. However, there have been no reported in vitro transport studies of the epithelial membranes involved in the regulation processes. The purpose of the investigation reported here was to determine the magnitude and direction of net transport of sodium and water, if any, across the small intestine of the marine teleost, Cottus scorpius.
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References
Smith, H. W., Amer. J. Physiol., 93, 480 (1930).
Keys, A. B., Proc. Roy. Soc., B, 112, 184 (1933).
Mullins, L. J., Acta Physiol. Scand., 21–22, 303 (1950).
House, C. R., J. Exp. Biol., 40, 87 (1963).
Young, J. Z., Pub. Staz. Zool. Napoli, 12, 425 (1933).
Schoeffeniels, E., Biological Structure and Function, edit. by Goodwin, T. W., and Lindberg, O., 11, 621 (Academic Press, London and New York, 1961).
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HOUSE, C., GREEN, K. Sodium and Water Transport across Isolated Intestine of a Marine Teleost. Nature 199, 1293–1294 (1963). https://doi.org/10.1038/1991293a0
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DOI: https://doi.org/10.1038/1991293a0
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