Performance characteristics of a fish monitor for detection of toxic substances—I. Laboratory trials

Abstract The results of a laboratory assessment of the performance characteristics of a fish monitor, designed for the detection of toxic pollution events at drinking water intakes, are presented. The equipment assessed was developed by WRc in the U.K. and monitors significant changes in fish ventilation frequency as an indicator of the occurrence of a toxic pollutant. Rainbow trout ( Salmo gairdneri ) were used in these trials being most commonly used in operation. Data from a trial period of 1 year were analysed to establish sensitivity to ten test substances and the estimated rate of false responses for the sensitivities quoted. Comparison with trout acute toxicity data (96 h LC 50 ) show responses at between 10 and 250% of the LC 50 with a response within 40 min. Comparison is also with 24 h SNARLs (suggested no adverse response levels) for humans where this is available. The monitor is capable of responding at concentrations below or close to these levels where the test substance could be expected to produce acute toxic symptoms, but the concentration of response may be considerably higher than the SNARL where toxic symptoms are of a chronic, long-term nature. The estimated rate of false responses for the monitor was between 1 in 3 and 1 in 5 months.

[1]  Walter Geller,et al.  A toxicity warning monitor using the weakly electric fish, Gnathonemus petersi , 1984 .

[2]  R. Drummond,et al.  An Electrode Chamber for Recording Respiratory and Other Movements of Free-swimming Animals , 1971 .

[3]  J. Robinson,et al.  The no-effect dose of aniline in human subjects and a comparison of aniline toxicity in man and the rat. , 1972, Food and cosmetics toxicology.

[4]  W S. G. Morgan,et al.  An Appraisal of the Performance of a Continuous Automatic Fish Biomonitoring System at an Industrial Site , 1982 .

[5]  D. Gruber,et al.  Industrial effluent monitoring incorporating a recent automated fish biomonitoring system , 1981 .

[6]  J. Diamond,et al.  Rapid detection of sublethal toxicity using fish ventilatory behavior , 1990 .

[7]  I. Chaston.  Influence of Light on Activity of Brown Trout (Salmo trutta) , 1968 .

[8]  M. Cairns,et al.  Use of Fish Ventilation Frequency to Estimate Chronically Safe Toxicant Concentrations , 1982 .

[9]  P. Campbell,et al.  Microcomputer‐based monitoring of the effect of phenol on electric organ activity in the mormyrid fish gnathonemus petersi , 1990 .

[10]  B. Macmahon,et al.  Epidemiology: Principles and Methods , 1970 .

[11]  J. B. Sprague.  Avoidance reactions of rainbow trout to zinc sulphate solutions , 1968 .

[12]  K Meyer-Waarden,et al.  A biological monitoring system employing rheotaxis of fish , 1976 .

[13]  J. B. Sprague,et al.  AVOIDANCE REACTIONS OF SALMONID FISH TO REPRESENTATIVE POLLUTANTS , 1969 .