Gz. Pan et Hm. Dutta, THE INHIBITION OF BRAIN ACETYLCHOLINESTERASE ACTIVITY OF JUVENILE LARGEMOUTH BASS MICROPTERUS-SALMOIDES BY SUBLETHAL CONCENTRATIONS OF DIAZINON, Environmental research (New York, N.Y. : Print), 79(2), 1998, pp. 133-137
An effect of diazinon on brain acetylcholinesterase (AChE) activity of
juvenile largemouth bass Micropterus salmoides was observed. The expo
sure concentration started from 1/10 of the 24-h LC50 value, 90 mu g/l
iter. The exposure duration was 24 h. Statistically significant and do
se-dependent reductions in the mean AChE activities we seen at 90, 180
, 270, 360, and 450 mu g/liter. The results show that juvenile brain a
cetylcholinesterase activities were significantly inhibited by subleth
al doses of diazinon. Inhibition of brain AChE will definitely cause p
hysiological and behavioral modifications that reduce survival ability
of the animals at an early stage Of growth. (C) 1998 Academic Press.