Abstract
The effects of 25 herbicides applied to fertilized eggs and fry of 5 spp. of fish were determined. Herbicide levels at the rates suggested for the control of aquatic plants were not lethal to developing eggs or yolk sac fry. Exposure of the fertilized eggs to high concentrations of some herbicides apparently reduced the number of fry that hatched. With the exception of the diquat cation, the toxicity levels of the aquatic herbicides to fry agreed with that for small bluegills and other species of small fish. The data indicate that the suggested rates of application of aquatic herbicides for the control of aquatic plants do not present a serious hazard to the survival of embryonic and post-embryonic fish.

This publication has 0 references indexed in Scilit: