Influence of weathered crude oil on liver enzyme metabolism of testosterone in gulls

Abstract
Experiments were conducted with glaucous-winged gulls, Larus glaucescens, to evaluate the effect of petroleum hydrocarbons on testosterone metabolism by liver enzymes, using an assay which measured the metabolism of [4-14C]testosterone. Diets containing 100 and 500 mg of weathered crude oil per day had no significant effect on testosterone metabolism.