Fate of fenitrothion in several developmental stages of the killifish (Oryzias latipes)

Abstract

14C-Fenitrothion at 0.1 ppm in running water, is rapidly absorbed at each stage of the embryo, yolk sac fry, postlarva, juvenile, and adult of the killifish (Oryzias latipes). The14C and fenitrothion concentrations 2 in organisms including those in eggs produced from mature female reach equilibrium after 1 to 3 days exposure except the juvenile stage, which shows a gradual increase in concentration, and the maximum bioaccumulation ratios 3 of the parent compound ranges from 88- (postlarva) to 540-fold (female adult) relative to the water concentration.