Abstract
The kinetics and hypocalcemic potency of stanniocalcin (STC) were examined in freshwater and seawater eels. The secretion rate and the metabolic clearance rate of STC were calculated from the STC disappearance curve after intra-arterial injection of trout STC. Basal plasma STC concentrations in freshwater and seawater eels did not differ but the STC secretion rate and metabolic clearance rate in seawater eel were 70–75% higher than in FW eel. The increased STC distribution space in seawater eels suggests that the STC receptor density was increased. STC had a higher hypocalcemic potency in seawater than in freshwater eels. These observations support the hypothesis that seawater fish require more hormonal control over transcellular influx of calcium than freshwater fish.
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Hanssen, R.G.J.M., Mayer-Gostan, N., Flik, G. et al. Stanniocalcin kinetics in freshwater and seawater european eel (Anguilla anguilla). Fish Physiol Biochem 10, 491–496 (1993). https://doi.org/10.1007/BF00004604
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DOI: https://doi.org/10.1007/BF00004604