COMPARATIVE STUDIES ON INTESTINAL PHOSPHATASES IN FISHES
M. P. BALASUBRAMANIAN *
DEPARTMENT OF PHARMACOLOGY, UNIVERSITY OF MADRAS, TARAMAN COMPUS, MADRAS-600042, INDIA.
S. PALIANICHAMY *
PG-DEPARTMENT OF ZOOLOGY, A. P. A. COLLEGE OF ARTS & CULTURE, PALANI - 624602, INDIA
S. ARUNACHALAM *
PG-DEPARTMENT OF ZOOLOGY, A. P. A. COLLEGE OF ARTS & CULTURE, PALANI - 624602, INDIA
*Author to whom correspondence should be addressed.
Abstract
Biochemical properties of intestinal phosphatases were studied in the fishes Oreochromis mossanbicus (Omnivorous), Labeo rohita (Herbivorous) and Channa striata (Carnivorous). The pH optimum for phosphatases was found to differ in these fishes. Acid phosphatase activity was higher than that of alkaline phosphatase in O. mossambicus, whereas in L. rohita and C striata, the activity of both acid and alkaline phosphatases were more or less similar. Effect of substrate concentrations of the intestinal phosphatases at their respective optimum pH revealed that the V max and Kim varied with fishes. Influence of the chemicals on phosphatases varied with fishes.