Abstract: BACKGROUND ＆ AIM: Dugesia japonica is sensitive to water pollution. The possibility of using Dugesia japonica as an indicator for assessing water pollution induced by used battery was explored in this paper. MATERIALS AND METHODS: Used-battery soakage liquids, named BX1，BX2，NF，JQ and SX, was prepared and each was diluted at five different concentrations (1,1/10,1/50,1/100,1/500). Dugesia japonica was bred in the used-battery soakage liquids and mineral water and the effects of these liquids on Dugesia japonica life and feeding were studied. RESULTS: All the used-battery soakage liquids had influences on Dugesia japonica life and feeding. When treated for 96 hours at 1/50 concentration, as compared to control group, there was no significant influence(P>0.05) for SX and there were significant influences for NF, BX1, BX2 and JQ(P<0.01).Their toxicity intensities were NF>BX1>BX2≈JQ>SX. For a definite battery soakage liquid, the higher its concentration，the stronger was its toxicity. When treated for 50 min at 1/50 concentration, all the five kinds of liquids had significant inhibition to Dugesia japonica feeding (P<0.01). Intensities were NF>JQ>BX2≈BX1>SX. CONCLUSION: These results suggested that using Dugesia japonica to monitor used-battery pollution of water would be suitable.

Key words: dugesia japonica, used-battery soakage liquid, life, feeding