QUICK SEARCH:   [advanced] Author: Keyword(s):
Home     Help     Feedback     Subscriptions     Archive     Search     Table of Contents

This Article Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Email this article to a friend Similar articles in this journal Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via Google Scholar Google Scholar Articles by Gibson, J. S. Articles by Cossins, A. R. Search for Related Content PubMed Articles by Gibson, J. S. Articles by Cossins, A. R.

Journal of Experimental Biology 114,355-364 (1985)
Published by Company of Biologists 1985

Temperature Acclimation of Intestinal Na Transport in the Carp (Cyprinus Carpio L.)

J. S. Gibson ¹, J. C. Ellory ¹, and A. R. Cossins ²

¹ The Physiological Laboratory, Cambridge, CB2 3EC
² Department of Zoology, University of Liverpool, Liverpool, L69 3BX

1. Carp intestine mounted in vitro has a positive serosal potential and a net Na absorption greater than the short-circuit current.

2. At 30°C in vitro, tissues from 10°C-acclimated fish are thought to show heat-damage.

3. When measured at 10°C in vitro, intestine from fish acclimated to 10°C shows a greater rate of sodium transport than that from 30°Cacclimated fish.

4. Mucosal application of amphotericin B, at 10°C in vitro, increases short-circuit current and net Na flux in both 10°C- and 30°C-acclimated fish but does not diminish the difference in Na transport between the two groups, under conditions when the apical membrane permeability is not limiting.

5. It is concluded that the principal acclimatization in carp intestine to low temperature is via an increased basolateral membrane Na pumping capacity.

Key words: Acclimation, intestine, epithelium.

Accepted on August 2, 1984