摘要：In this study, we analysed Pb2+ effects upon planarian Dugesia japonica, based on the assessment of acute toxicity, feeding behavior and locomotory velocity. The results showed that the 24, 48, 72 and 96 h LC50 of Pb2+ for D. japonica were 110.52, 64.26, 28.00 and 13.80 mg Pb2+/L, respectively. Planarian locomotory velocity was significantly reduced from 0.5 mg Pb2+/L onward. Feeding behavior was significantly affected by Pb2+, and a dose-response relationship was observed. In this study, the results suggested that feeding behavior and mobility in the aquatic planarian D. japonica could be used as biomarkers for Pb2+ exposure in a freshwater environment.
