Long term trends in PBDE concentrations in gannet (Morus bassanus) eggs from two UK colonies

作者：Crosse John D^*; Shore Richard F; Jones Kevin C; Pereira M Gloria

来源：Environmental Pollution, 2012, 161: 93-100.

DOI：10.1016/j.envpol.2011.10.003

• Polybrominated diphenyl ethers
• Penta-BDE
• Gannet
• Time trend
• BDE35
• Reproduction

We used the eggs of an avian sentinel, the Northern gannet (Moms bassanus), to determine long-term (1977-2007) trends in PBDE contamination in Western Atlantic (Ailsa Craig colony) and North Sea (Bass Rock colony) waters around the UK. BDEs 47, 49, 99, 100, 153, 154 were the most abundant and were found in all eggs. Individual congener and Sigma PBDE concentrations in eggs from both colonies increased mainly from the late 1980s. peaked in 1994, and then rapidly declined so that concentrations in 2002 were similar to or lower than those in the 1970s and 1980s. The PBDE congener profile and temporal variation in PBDE concentrations suggests that the Penta-BDE technical formula was the main source of PBDE contamination. However, contributions of heavier BDE congeners to Sigma PBDE concentrations have increased over time, suggesting other sources are becoming more important. PBDEs had no measurable effect on egg volume or eggshell index.

• 出版日期2012-2