Spatial variation in polycyclic aromatic hydrocarbon exposure in Barrow's goldeneye (Bucephala islandica) in coastal British Columbia

作者：Willie Megan^*; Esler Daniel; Boyd W Sean; Molloy Philip; Ydenberg Ronald C

来源：Marine Pollution Bulletin, 2017, 118(1-2): 167-179.

DOI：10.1016/j.marpolbul.2017.02.010

• British Columbia
• Bucephala islandica
• CYP1A
• Hydrocarbon
• Biomarker
• Mussel

Barrow's goldeneyes are sea ducks that winter throughout coastal British Columbia (BC). Their diet consists primarily of intertidal blue mussels, which can accumulate PAHs; accordingly, goldeneyes may be susceptible to exposure through contaminated prey. In 2014/15, we examined total PAH concentrations in mussels from undeveloped and developed coastal areas of BC At those same sites, we used EROD to measure hepatic CYP1A induction in goldeneyes. We found higher mussel PAH concentrations at developed coastal sites. Regionally, goldeneyes from southern BC, which has relatively higher coastal development, had higher EROD activity compared to birds from northern BC Our results suggest goldeneyes wintering in coastal BC were exposed to PAHs through diet, with higher exposure among birds wintering in coastal areas with greater anthropogenic influence. These results suggest the mussel-goldeneye system is suitable as a natural, multi-trophic-level indicator of contemporary hydrocarbon contamination, occurrence and exposure useful for establishing oil spill recovery endpoints.

• 出版日期2017-5-15