Many studies have been carried out on the toxicity of pollutants to aquatic animals , most of them are focused on the information of lethal concentrations , few have concerned the effects of sublethal concentration on the metabolism conditions 在污染物对于水生生物的毒害作用方面已经进行了大量的研究,但是大多为毒物致死浓度方面的报道,而关于在亚致死浓度时它们对于机体的生理影响却很少报道。