Organochlorine compounds (OCCs) in common carp (Cyprinus carpio) from patagonia Argentina.

ONDARZA, PAOLA MARIANA; MIGLIORANZA, KARINA SILVIA BEATRIZ; GONZALEZ, MARIANA; SHIMABUKURO, VALERIA MERCEDES; AIZPÚN , JULIA ELENA; MORENO, VICTOR JORGE

Journal of the brazilian Society of Ecotoxicology

RIMA

Año: 2010 vol. 5 p. 41 - 47

1809-8401

AbstractThe Negro River is the most important hydrological system of Patagonia, Argentina, drains a watershed of 140,000 km2. Its main economic activities are agriculture and industry, representing potential sources of Organochlorine Compounds (OCCs): organochlorinepesticides (OCPs) and PCBs, respectively. These pollutants are persistent, ubiquitous and hydrophobics and are accumulated in the lipid fraction of biota. Fish are excellentbiomonitors of pollution because incorporate OCCs from water and through diet, andrepresent different trophic levels. The aims of the present study were to investigate OCCslevels in wild common carp, Cyprinus carpio (Cyprynidae) focusing on: *the distributionpattern of OCPs and PCBs in gills, gonads, liver, muscle, and stomach content, *the potentialof common carp as indicator of aquatic OCCs pollution, and *the evaluation of residues in gills and stomach content to discuss different input pathways of OCCs.HCHs, Chlordanes, DDTs, Endosulfan, Heptachlors, Drins and PCBs were quantified by GC42ECD. The distribution of OCCs (ng g-1 lipid) was gills> gonads> liver> muscle> stomachcontent. Endosulfan accounted for 64% of OCCs in gills while, DDTs, PCBs and Chlordanespredominated in the stomach content suggesting the incorporation of more hydrophilicpollutants from the water column and those most persistent and hydrophobic from the diet.