Thiobencarb-Induced Changes in Acetylcholinesterase Activity of the Fish Anguilla anguilla

摘要: Abstract European eels (Anguilla anguilla) were exposed to sublethal thiobencarb concentrations in a continuous flow-through system for 4 days. Brain, muscle, and gill acetylcholinesterase (AChE) activities evaluated after 2, 12, 24, 48, 72, 96 h herbicide exposure. Thiobencarb induced significant inhibitory effects on the total specific AChE activity of A. anguilla, ranging from >30–40% inhibition eel brain gills >50% muscle tissue 2 initial In second experiment, then allowed period recovery pesticide-free water. Following 1 week recovery, affected approached control level. Fish transferred clean water recovered studied tissues slowly next 8 days (without toxicant), reaching about 60–80% normal levels around 4th day beginning (in water). Specific its value while remained depressed (29%) this later. Many behavioral changes such as lowering motility with loss equilibrium, uncoordinated movements, increase respiratory frequency observed during exposure herbicide.