Thorp J H, Giesy J P, Wineriter S A
Arch Environ Contam Toxicol. 1979;8(4):449-56. doi: 10.1007/BF01056351.
Crayfish Cambarus latimanus were subjected over a 5-month period to 0.02, 5, and 10 microgram Cd/L in a continuous flow system at ambient winter temperatures. Uptake of cadmium, growth, and mortality were measured. One-half of the surviving crayfish were analyzed for Cd after completion of the 5-month experiment, while the remaining half were removed from the contaminated water and subjected in a static laboratory experiment to stepwise, daily increases in temperature. The results indicated that (1) the rate of Cd uptake in crayfish was positively related to external concentration, (2) mortality increased significantly with higher Cd concentrations, and (3) neither growth nor thermal tolerance was significantly related to the Cd concentration in the crayfish tissues. The importance of chronic, low-level studies is discussed.
在冬季环境温度下，将小龙虾（Cambarus latimanus）置于连续流动系统中，在5个月的时间里暴露于浓度分别为0.02、5和10微克/升的镉环境中。测定了镉的摄取量、生长情况和死亡率。在为期5个月的实验结束后，对存活小龙虾的一半进行镉含量分析，而另一半则从受污染的水中移出，在静态实验室实验中使其温度每天逐步升高。结果表明：（1）小龙虾对镉的摄取速率与外部浓度呈正相关；（2）镉浓度越高，死亡率显著增加；（3）小龙虾组织中的镉浓度与生长和耐热性均无显著关系。文中讨论了慢性低水平研究的重要性。
