Abstract
1. 1. Unidirectional fluxes of Na + and Cl −, ouabain-sensitive Na +, K +-ATPase activity and the protein content have been determined in the intestine of trout in fresh water (FW) and 1, 2, 7 days after sea-water (SW) transfer. 2. 2. After abrupt transfer in SW the Na + and Cl − transports follow in two phases: first, a permeabilization of the epithelium during the first day; secondly, a transient impermeabilization and increase of the protein content of the mucosa (2 days after SW transfer) and a progressive increase of both the unidirectional Na +, Cl − fluxes and the Na +, K +-ATPase activity (7 days after SW transfer). 3. 3. After 7 days SW the Actaptation of the enterocytes which is different for Na +- and Cl − and for the middle and the posterior intestine is not achieved.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
