GILL CARBOHYDRATE-METABOLISM OF RAINBOW-TROUT IS MODIFIED DURING GRADUAL ADAPTATION TO SEA-WATER

Citation
Jl. Soengas et al., GILL CARBOHYDRATE-METABOLISM OF RAINBOW-TROUT IS MODIFIED DURING GRADUAL ADAPTATION TO SEA-WATER, Journal of Fish Biology, 46(5), 1995, pp. 845-856
Citations number
50
Categorie Soggetti
Marine & Freshwater Biology
Journal title
ISSN journal
00221112
Volume
46
Issue
5
Year of publication
1995
Pages
845 - 856
Database
ISI
SICI code
0022-1112(1995)46:5<845:GCORIM>2.0.ZU;2-3
Abstract
The levels of glycogen and glucose, and the activities of several key enzymes of glycogenolysis, glycolysis and the pentose phosphate shunt were assessed in gills of rainbow trout of two sizes (97.03 +/- 3.03 g and 165.69 +/- 5.01 g) during gradual transfer to sea water (0, 9, 18 and 28 ppt). The results indicated changes, mainly size-independent, in carbohydrate metabolism of gills during gradual adaptation to sea w ater. Glucose availability in gills increased as a result of both high er glycogenolysis and greater supply of exogeneous glucose. This gluco se was mainly used for increased glycolysis, providing the ATP needed to perform the hypo-osmoregulatory work occurring in gills during adap tation to sea water.