Bioconcentration of organophosphorus pesticides to hazardous levels by amphibians

摘要: Organophosphorus pesticides have generally low persistence in the environment, but they may persist water and accumulate certain aquatic vertebrates. Frogs are resistant to cholinesterase inhibitors; thus it was suspected that might pesticides. Tadpoles concentrated from up 60 times; those exposed to1 ppm parathion 5 fenthion were lethal when fed mallard ducks. Dicrotophos, molathion, acephate not accumulated levels such consumed a single meal by Brain correlated with dose effect. Metabolites of produced tadpoles rapidly excreted concluded play small role toxicity larvae Dangerous some be amphibians nature adversely affect carnivorous species.