BIOCHEMICAL COMPARTMENTATION OF FISH-TISSUES - DISTRIBUTION OF GLUCONEOGENIC ENZYMES IN THE BRAIN

  • 1 January 1981
    • journal article
    • research article
    • Vol. 30  (4) , 375-380
Abstract
Specific G-6-Pase and fructose-1,6-diphosphatase activity were biochemically compartmentalized in 4 parts of the brain of 9 nutritionally important fishes [Labeo rohita, Cirrhina mrigala, Catla catla, Channa punctatus, C. marulius, C. striatus, Clarius batrachus, Heteropneustes fossilis and Mystus seenghala]. Glucose-6-phosphatase and fructose-1,6-diphosphatase activity were highest in the cerebrum and lowest in the cerebellum. Piscivorous fishes had the highest gluconeogenic enzyme content, followed by catfishes and major carps. After the liver and muscles, various parts of the brain play an important role in carbohydrate metabolism. A direct relationship between the stage of evolution and elevation of gluconeogenic enzyme levels was observed. Evolution apparently modifies the biochemical organization of fishes in general, particularly the brain.