Asian Fisheries Society

Glucose, Lactate and PyruvateMetabolism in Labeo rohita with Reference to Ambient Oxygen



Anaerobic metabolism and its link in energy utilization such as glycogen utilization, lactate production and pyruvate utilization were quantitatively analyzed in Labeo rohita under four different oxygen concentrations (5.20-control, 3.52, 2.46 and 0.48 ppm oxygen levels) and recovery after two hours. The glycogen levels in the muscle and liver decreased significantly with reduction in oxygen levels, but the blood glucose level increased from 48.90 to 68.49 mg% at 3.52 ppm oxygen level but slightly decreased to 60.99 mg% at 2.46 ppm. The lactate level increased as the level of ambient oxygen decreased in all tissues. Muscle tissue showed the highest accumulation of lactate (48.93 mg%) under hypoxia and it was reduced to 13.50 mg% during recovery period. The level of residual pyruvate decreased from 9.12 mg% (at 5.20 ppm oxygen level) to 2.08 mg% under hypoxia. The amount of glycogen accounted for pyruvate production, lactate production and oxidative phosphorylation was calculated under anaerobic condition and discussed.


Publication Date : 2003-01-01

Volume : 16

Issue : 1

Page : 51-58

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Date 2003/01/01
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