Stripped weakfish (Cynoscion guatucupa): A biomonitor of organochlorine pesticides in Bahia Blanca estuary, Argentina

LANFRANCHI ANA LAURA; MENONE MIRTA; MIGLIORANZA KARINA SILVIA BEATRIZ; AIZPUN JULIA ELENA; MORENO VICTOR JORGE

MARINE POLLUTION BULLETIN

Elsevier

Año: 2006 vol. 52 p. 74 - 80

0025-326X

The general goal of this study was to investigate the role of Cynoscion guatucupa as a biomonitor of organochlorine pesticides (OCP) contamination in Bahý´a Blanca estuary.Thus, we evaluated whether or not OCP fish distribution pattern reflects the OCP land sources, and if size-related bioaccumulation and biomagnification of these contaminants does occur by comparing different tissues of juvenile and adults of C. guatucupa (Cuvier, 1830). Size-related bioaccumulation in C. guatucupa was observed and it was more important for the more lipophilic and biomagnifying OCP, being determined over time by diet influence. Endosulfan sulfate, chlordanes, HCH isomers and DDT compounds predominated in tissues and ingested food of C. guatucupa, being a-chlordane, heptachlor and p,p0-DDE highly bioaccumulated and biomagnificated. Our findings also showed that male adults of C. guatucupa are biomonitors of OCP pollution so we propose this species for further investigations in other coastal zones of South America.