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RESEARCH PRODUCT

Changes in carbohydrate metabolism in the eelanguilla anguilla, during short‐term exposure to diazinon

subject

description

The present communication deals with the effect of diazinon (0.042 mg/L) on the energy metabolism of the european eel Anguilla anguilla. Analysis of various parameters such as glycogen, lactate and glucose was made on different eel tissues after 6, 24, 48, 72 and 96 hr of diazinon exposure. Liver and muscle glycogen content decreased significantly (p < 0.05) from 6 to 96 hr pesticide exposure. Mean blood glucose values were elevated significantly after exposure to this sublethal diazinon concentration. Liver, blood and muscle lactate levels in fish increased during all exposure time being the highest at 96 hr exposure. Diazinon intoxicated fish showed signs of pesticide poisoning as muscular twitching, gyrating swimming movements and diminished sensory activity but survived the stipulated exposure period. The results are discussed in relation to the stress effect produced by the pesticide and the related responses of the fish.