Organochlorine contamination in Odontesthes bonariensis from five water reservoirs of San Luis, Argentina.

RODRÍGUEZ, N.; NAVARRO BECERRA, N.; ANTÓN, R. I.; ENRIQUE CAVIEDES VIDAL

Merlo, San Luis

Congreso; Reunión Científica Anual de la Sociedad de Biología de Cuyo; 2004

ORGANOCHLORINE CONTAMINATION IN Odontesthes FROM FIVE WATER RESERVOIRS OF SAN LUIS, ARGENTINARodriguez N, Navarro Becerra N, Antón R, Caviedes-Vidal EFac Quim Bioquim Farm, Univ Nac San Luis, 5700 San Luis.No information is available about organochlorine pesticide (OCPs)contamination in the fauna of the water reservoirs of the centerregion of San Luis. Thus, the aim of this study was to survey (OCPs)pollution in five water reservoirs of San Luis, La Florida, EstebanAgiiero, Potrero de 10s Funes, Villa General Roca y Cruz de Piedra.We selected silverside (0. bonariensis) as a model, since thisfish is a secondary consumer occupying a high position in the foodchain and is ate by humans. OCPs were assayed by GC-ECD.Samples from all five water reservoirs exhibited OCPs detectablelevels. The range of values (min-max) for each OCPs family in nglg fat were: 1) HCH and isomers: a, P, y and 6: not detected (ND) -76.74 2) DDT and methoxichlor: ND-154.4 3) the cyclo diene group:a) chlordane: ND-96.25 b) aldrin, endrin, dieldrin and endosulfan:ND-219.26. In summary, this is the first report OCPs contaminationof silversides in water reservoirs from the center region of San Luis.