caa a22 4500 465826385 CHVBK 20180323112150.0 cr unu---uuuuu 170327e19900401xx s 000 0 eng 10.1007/BF00258756 doi (NATIONALLICENCE)springer-10.1007/BF00258756 Growth hormone kinetics during adaptation to a hyperosmotic environment in rainbow trout [Elektronische Daten] [Tatsuya Sakamoto, Tsuyoshi Ogasawara, Tetsuya Hirano] Summary: To clarify the role of growth hormone (GH) in salmonids during seawater (SW) adaptation, we examined GH kinetics in chronically cannulated rainbow trout, weighing about 1 kg. When trout were transferred from fresh water (FW) to 75% SW, plasma chloride concentration was normalized within 1 week. Plasma GH concentration increased significantly 2 days after transfer and decreased to the initial level thereafter. Metabolic clearance rate (MCR) and secretion rate (SR) of GH were calculated from the plasma levels of GH measured by radioimmunoassay after intra-arterial injection of recombinant chum salmon GH. 4 days after transfer to 75% SW, both MCR and SR increased to levels five times higher than those in FW, and returned to the FW levels after 3-4 weeks. In rainbow trout GH seems to be involved in the development of hypoosmoregulatory mechanisms, especially during the early phase of adaptation. Springer-Verlag, 1990 Growth hormone nationallicence Cortisol nationallicence Metabolic clearance rate nationallicence Seawater adaptation nationallicence Rainbow trout nationallicence Sakamoto Tatsuya Ocean Research Institute, University of Tokyo, Nakano, 164, Tokyo, Japan aut Ogasawara Tsuyoshi Ocean Research Institute, University of Tokyo, Nakano, 164, Tokyo, Japan aut Hirano Tetsuya Ocean Research Institute, University of Tokyo, Nakano, 164, Tokyo, Japan aut Journal of Comparative Physiology B Springer-Verlag 160/1(1990-04-01), 1-6 0174-1578 160:1<1 1990 160 360 https://doi.org/10.1007/BF00258756 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00258756 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Sakamoto Tatsuya Ocean Research Institute, University of Tokyo, Nakano, 164, Tokyo, Japan aut NATIONALLICENCE 700 1- Ogasawara Tsuyoshi Ocean Research Institute, University of Tokyo, Nakano, 164, Tokyo, Japan aut NATIONALLICENCE 700 1- Hirano Tetsuya Ocean Research Institute, University of Tokyo, Nakano, 164, Tokyo, Japan aut NATIONALLICENCE 773 0- Journal of Comparative Physiology B Springer-Verlag 160/1(1990-04-01), 1-6 0174-1578 160:1<1 1990 160 360 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer