Abstract
HORMONAL control of calcium homoeostasis in the lower vertebrates has received relatively little attention. This is particularly true for teleost fish in which there is a definite osseous skeleton but no parathyroid glands. Understanding of control of calcium homoeostasis in these animals therefore is a problem of considerable evolutionary and physiological interest. The demonstration of a potent hypocalcaemic factor in the thyroid tissue of certain mammals1 has now provided a new approach, because teleost fish possess definite thyroid follicles in spite of their diffuse occurrence. We have examined the effects of a porcine thyrocalcitonin extract on concentrations of serum calcium and phosphate in the catfish and tried to demonstrate the presence of thyrocalcitonin in catfish tissue which contained thyroid follicles.
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LOUW, G., SUTTON, W. & KENNY, A. Action of Thyrocalcitonin in the Teleost Fish Ictalurus melas. Nature 215, 888–889 (1967). https://doi.org/10.1038/215888a0
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DOI: https://doi.org/10.1038/215888a0
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