Chapter 29 Assessment of the Hazard Potential of Environmental Chemicals by Quantifying Fish Behaviour

摘要: Using the spontaneous locomotor behaviour of fi sh as a toxicological parameter, sublethal effects to naturally occurring cyanotoxin microcystin-LR (MC-LR) and characteristic man-made chemical 2.4.4'-trichlorobiphenyl (PCB 28) were investigated under laboratory conditions. Swimming activity two species (Danio rerio Leucaspius delineatus) was monitored continuously by using an automated video-monitoring object-tracing system. For analysing cyclic aspects basic behavioural analyses combined with chronobiological procedures such power spectral analysis. these methods it shown that dissolved MC-LR concentrations between 0.5 50 µg l 1 PCB 28 concen- trations at 100 150 acted stressors caused signifi cant changes in circadian rhythms Danio well delineatus. both elevated led reduc- tion their activity. It proved could be valuable tools for study stressful or even harmful environmental factors eld ecotoxicology biomonitoring. Some ndings this build basis development new low-budget biomonitoring system drinking water protection.