... in zebrafish gill epithelium are involved in Na + uptake. Gill Acid-sensing ion channels Zebrafish Sodium uptake Ionoregulation In fresh water, teleost fishes experience the continuous diffusive loss of ions to a more hypo-osmotic external environment. To maintain homeostasis, freshwater...

... in the freshwater rainbow trout:effects of environmental pH change and sodium uptake blockade. J. Exp. Biol. 114 , 329 -353. Wright, P. A., Heming, T. and Randall, D. J. ( 1986 ). Downstream changes in water flowing over the gills of rainbow trout. J. Exp. Biol. 126 , 499 -512. Wright, P. A., Randall...

... uptake is also present in trout gills. It demonstrates saturation kinetics with a comparably low K m (9.6 nmol l -1 ) but a lower maximum transport capacity ( J max =3.5 pmol g -1 h -1 )than the sodium-insensitive system. Sodium uptake exhibits saturation kinetics with a K m of 69 μmol l -1 . Copper...

...Rod W. Wilson; Pam M. Wright; Steve Munger; Chris M. Wood ABSTRACT Net ammonia fluxes ( J Amm ) were measured in adult freshwater rainbow trout in vivo under a variety of conditions designed to inhibit unidirectional sodium uptake ( ; low external [NaCl], 10 −4 mol l −1 amiloride), alter...

... activity in fish gills. H + -ATPase activity was also elevated in freshwater fish after chronic cortisol infusion. 29 3 1993 © 1993 by Company of Biologists 1993 H + -ATPase N -ethymaleimide sodium uptake gill rainbow trout Oncorhynchus mykiss The Na + /H + exchanger...