... ., smoltification) and following changes in environmental salinity. Smolts had higher transcript levels of CRF ligands than parr and this difference persisted following seawater transfer. Additionally, seawater transfer caused transient increases in transcription of urocortin 2 (UCN2) and CRFR2 (posterior intestine...

... ligands, but transcript levels of crfr2a , crfbp2 , crfb2 and ucn2a decreased by ∼50% following seawater transfer. Accordingly, transfer of seawater-acclimated fish into freshwater increased crfr2a and ucn2a levels. Cortisol treatment of cultured gill filaments had marked effects on the CRF system...

.... † To whom correspondence and reprint requests should be addressed. 28 1 1991 © 1991 by Company of Biologists 1991 renin ANP juvenile salmon seawater transfer Salmo salar Oncorhynchus mykiss Ionic regulation of freshwater and marine fish has been extensively studied...

... control values. Flux rates were calculated by the methods presented in McWilliams and Potts (1978) . Significance of results was tested by means of a paired r-test. chloride uptake rainbow trout seawater transfer ion regulation © 1990 by Company of Biologists 1990 21 08 1989...