TOXICITY OF COMPLEX CHEMICAL-MIXTURES - ACUTE AND LONG-TERM EFFECTS ON DIFFERENT LIFE STAGES OF ZEBRAFISH (BRACHYDANIO-RERIO)

Acute and long-term toxicity of 3,4-dichloroaniline and lindane to zebrafish were examined in tap water and water from the Rhine River and the toxicity of the binary mixture 3,4-dichloroaniline/lindane in tap water was investigated. The acute toxicity of 3,4-dichloroaniline and lindane was not influenced by the complex matrix of river water compared with tap water. The binary mixture of 3,4-dichloroaniline and lindane demonstrated an additive effect in the acute test. The survival rate of early life stages in river water was reduced by lindane (80 mu g/liter), whereas the effects of 3,4-dichloroaniline on survival and growth were visible but not significant. The binary mixture of 2 mu g/liter 3,4-dichloroaniline and 40 mu g/liter lindane in tap water had an influence on growth on the early life stages of zebrafish. (C) 1995 Academic Press, Inc.