Abstract
We compared the uptake of water-accommodated fractions of Alaska North Slope crude oil in pre- and post-spawn herring ( Clupea pallasi) and the resulting induction of mixed function oxygenase activity. Both groups of herring accumulated significant quantities of polycyclic aromatic hydrocarbons in muscle tissue. Pre-spawn herring accumulated higher concentrations of hydrocarbons and retained them longer. Induction of mixed function oxygenase activity in pre-spawn fish was one-third to one-half that in post-spawn fish. Inability of pre-spawn herring to induce mixed function oxygenases at as high a level as post-spawn fish may explain higher tissue concentrations and retention of hydrocarbons in the pre-spawn animals.
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