Abstract
THE relationship between the anadromous lamprey, L. fluveatilis, and the purely fresh-water form, L. planeri, has been the subject of much discussion, and doubt has sometimes been expressed as to whether they should be regarded as distinct species. As Weissenberg1 showed, although there are profound differences in the biology of the two forms, there are no important morphological criteria (other than size) by which they may be differentiated. It is therefore of especial interest to find that significant physiological differences exist between these species in regard to the permeability to water of the integument.
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References
Weissenberg, R., Zool. Anz., 63 (1925).
Smith, H., J. Biol. Chem., 81, 727 (1929).
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HARDISTY, M. Permeability to Water of the Lamprey Integument. Nature 174, 360–361 (1954). https://doi.org/10.1038/174360b0
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DOI: https://doi.org/10.1038/174360b0
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