Abstract
THE sea-ward migration of the salmon (Salmo salar) which coincides with the parr-smolt transformation, involves the solution of important osmotic and mineral regulation problems by the fish. The lack of tolerance for salt water at the parr stage has been noted previously1. However, neither the capacities for mineral regulation of this stage nor their probable shift in the smolt have been subjected to an analysis, made more desirable by the fact that, like the endocrinological changes which occur at the same time2, they may be causally connected with migration itself3.
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References
Fage, L., Bull. Inst. Océan. Monaco, 225, 1 (1912). Jones, J. W., Salmon and Trout Mag., 119, 63 (1947). Huntsman, A. G., and Hoar, W. S., J. Fish Res. Bd. Canada, 4, 409, (1939).
Fontaine, M., Biol. Rev., 29, 390 (1954). Fontaine, M., and Olivereau, M., J. Physiol., 49, 174 (1957).
Fontaine, M., and Callamand, O., Bull. Mus. Hist. Nat., XV, 373 (1943). Koch, H. J., Ann. Soc. Roy. Zool. Belg., LXXIII, 5 (1942). Koch, H. J., and Heuts, M. J., Ann. Soc. Roy. Zool. Belg., LXXIII, 165 (1942). Fontaine, M., and Koch, H. J., J. Physiol., 42, 237 (1950).
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KOCH, H., EVANS, J. & BERGSTRÖM, E. Sodium Regulation in the Blood of Parr and Smolt Stages of the Atlantic Salmon. Nature 184, 283 (1959). https://doi.org/10.1038/184283a0
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DOI: https://doi.org/10.1038/184283a0
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