Accumulation and excretion of pesticides used in golf courses by carp ( Cyprinus carpio) and willow shiner ( Gnathopogon caerulescens)

Abstract

1. The average bioconcentration factors (BCF) in whole body of willow shiner ( Gnathopogon caerulescens) were 3.9 for simazine, 18 for chlorothalonil and 350 for captan. 2. The average BCF values in whole body of carp ( Cyprinus carpio L.) were 220 for tolclofos-methyl, 460 for chlorpyriphos, 20 for flutolanil, 27 for isoprothiolane, 25 for chlorothalonil, 100 for captan, 440 for isoxathion and 360 for iprodione. 3. The correlations between n-octanol-water partition coefficients ( P ow) and BCF in willow shiner and carp were investigated for the pesticides studied here and already reported. Correlation factors ( r) except captan were 0.9391 ( N = 10) for willow shiner and 0.7747 ( N = 15) for both fishes. 4. The excretion rate constants ( k) from whole body of willow shiner were 0.77 hr −1 for simazine, 0.04 hr −1 for chlorothalonil and 0.02 hr −1 for captan. 5. The k values from whole body of carp were 0.04 hr −1 for tolclofos-methyl, 0.02 hr −1 for chlorpy-riphos, 0.12 hr −1 for flutolanil, 0.19 hr −1 for isoprothiolane, 0.01 hr −1 for captan and 0.03hr −1 for isoxathion.bl]