Status of Contamination of the Jawfish (Chrysichthys nigrodigitatus, (Lapécède, (1803)) by Organophosphorus Residues in the Hydroelectric Dams of Faé, Kossou and Taabo (Ivory Coast)

The present study aims at determining the level of contamination jawfish (Chrysichthys nigrodigitatus) by organophosphate residues in hydroelectric dams Faé, Kossou and Taabo. Ninety (90) fish were collected from these three during eight sampling campaigns. Composite samples formed, each for two fish. A total forty-five (45) composite formed. detection pesticide was determined gas chromatography-mass spectrometer (GC/MS). results show that average residue load is 0.184 mg/kg. Faé scheme had highest 0.266 mg/kg samples, compared to 0.197 Taabo 0.089 dam. relatively high concentration observed parathion-methyl with a value 0.130 ± 0.023 Chlorfenvinphos, 0.046 0.007 only molecule all analyzed dams. In addition, most molecules detected concentrations exceeded Maximum Residue Limits (MRLs) pesticides, whose values range 0.01 0.05