Biomonitoring: cadmium deteriorates electro-orientation performance in catfish.
1. Exposure of catfish, Ictalurus nebulosus, to sublethal concentrations of cadmium deteriorates electro-orientation performance. 2. Cadmium, at a concentration of 40 micrograms/l, doubles the behavioural threshold for electric stimuli within 48 hr of exposure; both prolonged exposure and higher concentrations result in higher thresholds. The effect is reversible. 3. Electro-orientation performance can be used to monitor the quality of surface water.
Laboratory of Comparative Physiology, University of Utrecht, The Netherlands.
I S
IS
Neuman
C
C
van Rossum
F
F
Bretschneider
P F
PF
Teunis
R C
RC
Peters
D000818:Animals; D002104:Cadmium / Q000633:toxicity*; D004305:Dose-Response Relationship, Drug; D004566:Electrodes; D004784:Environmental Monitoring / Q000379:methods*; D007059:Ictaluridae / Q000502:physiology*; D009949:Orientation / Q000187:drug effects*
D002104:Cadmium