ORGANOCHLORINE PESTICIDES RESIDUES IN SOM E COMMERCIAL FISH SPECIES FROM FLOODPLAIN OF HIGH PARANA RIVER, PORTO-RICO REGION, PARANA STATE, BRAZIL

Organochlorine pesticides concentrations have been monitored in fishes of high Parana river, during the period August 1992 to November 1993. The species monitored were Prochilodus lineatus, Pseudoplatystoma cor ruscans and Salminus maxillosus representing more than 50% of relative biomass. The P. lineatus presented larger contents and frequency of c ontamination by organochlorines. The pesticides detected in this fishe s were HCH, aldrin, endossulfan, heptachlor, p,p'-DDE and p,p'-DDT.