A Recurrence Model For The Prediction Of DDT Flux In Atlantic Menhaden

A simple recurrence model is developed for the prediction of DDT flux through Atlantic menhaden (Brevoortia tyrannus). The DDT body burden in young-of-the-year menhaden at any time is equal to the body burden on the previous day plus the DDT accumulated on the current day minus the DDT turnover. Accumulation of DDT is simulated and compared with field observations. Estimations of DDT ingestion, assimilation, turnover, and egestion are made on both per fish and population bases. It is estimated that emigrating juvenile menhaden export 20 g DDT year -, from the Newport River estuary in North Carolina.