... as well as maximal activities of enzymes of intermediary metabolism in tissues from marine and freshwater elasmobranchs,including: the river stingray Potamotrygon motoro (<1 mmol l –1 plasma urea); the marine stingray Taeniura lymma , and the marine shark Chiloscyllium punctatum (>300 mmol l –1...

.... * Author for correspondence (e-mail: hervant@univ-lyon1.fr ) 18 4 2002 © The Company of Biologists Limited 2002 2002 starvation refeeding subterranean surface crustacean intermediary metabolism energy metabolism digestive physiology adaptive strategy food-limited biotope...