Effects of the Herbicide Atrazine on an Oyster-Food Organism

摘要

Growth rates of semicontinuous cultures of Nannochloris oculata (Chesapeake Bay clone) were determined in repeated experiments each featuring 27 treatment combinations of temperature, light, and the herbicide atrazine. Atrazine's toxicity was maximized when temperature and light conditions were optimal for rapid growth. The percent inhibition for atrazine at 100 ppb ranged from 46.2% at low temperature (15C) and low light (0.208 mW/cm) to 54% at high temperature (25C) and high light (1.352mW/cm).