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A study on some enzymes in ricefield fish as biomarkers for pesticide exposure

Arshad, Juzu Hayati and Muhammad, Mazlina and Ho, Mei Choo and Surif, Salmijah and Mat Jais, Abdul Manan (1998) A study on some enzymes in ricefield fish as biomarkers for pesticide exposure. In: Rice Agroecosystem of the Muda Irrigation Scheme, Malaysia. Malaysian Institute for Nuclear Technology Research, Bangi, Selangor, pp. 155-166. ISBN 9679970043.

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Abstract

A study was carried out on three enzymes in rice field fish which can be used as possible biomarkers for pesticide exposure. The results obtained showed that the activity of the enzyme EROD (ethoxyresorufin-o-deethylase) increased between 1.5-2.2 fold in snakehead or haruan (Channa striata) sampled from the pesticide polluted areas, particularly the recycled areas and only a slight increase in EROD activity in climbing perch or puyu (Anabas testudineus). Increase in the activity of carboxylesterase was also noted. The percentage inhibition of acety1cholinesterase ranges from 18.4%-57.4% and 2.5%-34.2% for Channa striata and Anabas testudineus, respectively. Generally, a higher percentage of acety1cholinesterase inhibition was noted for those fish sampled from the recycled areas. The noted changes in the activity of these enzymes suggest exposure of rice field fish to foreign compounds, possibly pesticides, which are known to induce EROD activity and inhibit acety1cholinesterase activity. Therefore it may be possible to use these enzymes as biomarkers for pesticide exposure.

Item Type:Book Section
Keyword:Biological markers; Ricefield fish; Enzymes; Pesticide
Faculty or Institute:Faculty of Medicine and Health Science
Faculty of Science and Environmental Studies
Publisher:Malaysian Institute for Nuclear Technology Research
ID Code:18186
Deposited By: Umikalthom Abdullah
Deposited On:01 Jun 2015 10:09
Last Modified:15 Jun 2015 15:49

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