Abstract
Eight female Gulf coast striped bass (Morone saxatilis) broodfish collected for induced spawning from the Apalachicola River below the Jim Woodruff Lock and Dam were analyzed for organochlorine pesticides (OCs) and metals in muscle and ovarian tissues. Chemical analyses revealed that muscle and ovaries contained detectable amounts of OCs and metals. Concentrations of p, p′-DDE, a derivative of the pesticide DDT, in muscle and ovary (0.54 and 0.65 μg/g, respectively) were significantly higher than α-chlordane, dieldrin, and p, p′-DDD. The presence of p, p′-DDE, an antiandrogenic compound, in females suggests that the compound also may be present in male striped bass. Concentrations of Cr, Hg, Mg, and Mn were higher in muscle than in ovarian tissues. Concentrations of Hg have almost doubled in muscle tissues (0.85 μg/g) and tripled in ovaries (0.15 μg/g) in our samples, compared with the data from 1986 to 1989. Organochlorine pesticides and metal contaminants were present in muscle and ovarian tissues of adult females and may have been retarding development of eggs leading to low hatching rates.
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