Effects of pentachlorophenol on survival of earthworms (lumbricus terrestris) and phagocytosis by their immunoactive coelomocytes

摘要

Earthworms, Lubricus terrestris, exposed for 96 h to filter paper saturated with five nominal concentrations of pentachlorophenol (PCP: 5-50 μg PCP/cm~2), exhibited a 50/100 lethal concentration (LC50) of 25.0 μg PCP/cm~2 (95/100 confidence interval [CI]: 22.8-27.2) and corresponding whole worm body burden-based 50/100 lethal dose (LD50) of 877.7 μg PCP/g dry mass (95/100 CI:828.5-927.0). Linear regression modeling showed that worms increased body concentrations (BC=μg PCP/g dry tissue mass) with increasing exposure concentrations (EC) according to BC=113.5+29.5 EC (r~2=0.94, p=0.03).