Preferential biomagnification of aryl hydrocarbon hydroxylase- inducing polychlorinated biphenyl congeners in the lake michigan, USA, lower food WEB

摘要

Preferential biomagnification of 14 dioxin-like polychlorinated biphenyls(PCBs) was determined in lower-trophic-level organisms of the Lake Michigan, USA, food web. Bioaccumulation of these coplanar, aryl hydrocarbon hydroxylase (AHH)- inducing PCB congeners and total PCBs in phytoplankton, zooplankton, Mysis relicta, and Diporeia sp. Were studied for tow locations in Lake Michigan over time. The results indicated that both total PCB and AHH-inducing PCBs biomagnify with increasing food web trophic level, with biomagnification of the AHH-inducing PCBs occurring to a greater degree.