Preliminary survey on some detoxication/toxication enzymes in fishes from the Muda area

TL;DRAbstract

Xenobiotic metabolising enzymes, specifically the mixed function oxidase (mfo), UDP-glucuronyl transferase (UDP-GT) and glutathione S?transferase (GST) in fishes have been used in this study as indicators of pesticide pollution in the ricefields. Activities of these enzymes were assayed in four fish species namely snakehead or haruan (Channa striata), climbing perch or puyu (Anabas testudineus), snakeskin gouramy or sepat siam (Trichogasterpectoralis) and walking catfish or keli (Clarias spp.) taken from six different locations within the Muda Irrigation Scheme on two different occasions. These areas are namely ACRBD4, Alor Gunung, Tanah Merah, Block 14, Sungai Sala in Kedah and Kampung Jelempok in Arau, Perlis. The last site, which practises biological and nonchemical pest control methods was taken as the control plot. Results from this study show no significant difference between the GST levels in Channa striata and Anabas testudineus taken from areas where pesticides are routinely u

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