Residues of PCB and related compounds were not detected in any of the seabird eggs analyzed in Chile. Trudeau's Tern displayed the highest levels of mercury (486 ng gOHa). Mercury and organochlorines (PCBs, DDT, HCB, HCH, and PCP) were quantified to reveal the interspecific differences, spatial and temporal trends in contamination levels.

Brown-hooded Gull (Larus maculipennis), Kelp Gull (Larus dominicanus), Trudeau's Tern (Sterna trudeaui), Neotropic Cormorant (Phalacrocorax brasilianus), and Pink-footed Shearwater (Puffinus creatopus) eggs were sampled at different breeding sites during the 1990s. Seabird eggs were used as bioindicators of chemical contamination in Chile. Seabird eggs are proposed as biomonitors of chemical contamination in Chile. Sommer, Ute Pacheco, Patricia Schlatter, Roberto Seabird eggs as bioindicators of chemical contamination in ChileĮnergy Technology Data Exchange (ETDEWEB)Ĭifuentes, Jacqueline Munoz Becker, Peter H. Concentrations of organohalogen contaminants and metabolites in eggs of glaucous gulls do not fluctuate with the laying order in a three- egg clutch In general, maternal transfer favored low K ow and/or less persistent compounds, whereas the recalcitrant and/or higher-halogenated compounds were less readily transferred, and consequently more selectively retained in the mother. However, the concentrations of these organohalogen classes fluctuated irrespective of the laying order in the clutch. Î£PCB, Î£OC and Î£PBDE, but not Î£MeSO 2 -PCB, concentrations in eggs were positively associated, with increasing magnitude and significance from the first through the last-laid egg, with concentrations in female plasma. We examined a suite of PCBs, organochlorine (OC) pesticides and by-products, polybrominated diphenyl ethers (PBDEs), polybrominated biphenyls (PBBs) and methylsulfonyl- (MeSO 2 ) PCBs in complete 3- egg clutches of glaucous gulls (Larus hyperboreus), and plasma samples of the laying females collected from the Norwegian Arctic. However, the variability in organohalogen concentration and composition associated with the laying sequence, have not been defined. Letcher, Robert J.Įggs of seabirds have routinely been used as indicators of environmental pollution in the Arctic. Maternal transfer of organohalogen contaminants and metabolites to eggs of Arctic-breeding glaucous gulls Organic contaminant concentrations in Alaskan gull eggs could possibly be affecting chick growth and survival rates, but the eggs should be safe for humans to eat in small quantities STAMP plans to continue collecting and banking gull eggs for future real-time and retrospective analyses. Chick growth and survival rates may be affected by the contaminant levels found in the eggs, but the eggs should be safe for human consumption if they are eaten in small quantities. Concentrations ranged from below detection limits to 322 ng g -1 wet mass in one egg for 4,4'-DDE and differed among the samples collected in the Gulf of Alaska and Bering and Chukchi Seas.

Glaucous and glaucous-winged gull (Larus hyperboreus and Larus glaucescens) eggs collected in 2005 from seven Alaskan colonies were analyzed for organic contaminants. The Seabird Tissue Archival and Monitoring Project (STAMP) is a long-term program designed to track trends in pollutants in northern marine environments using seabird eggs. Gull eggs have been used to monitor contaminants in many parts of the world. International Nuclear Information System (INIS) Monitoring organic contaminants in eggs of glaucous and glaucous-winged gulls (Larus hyperboreus and Larus glaucescens) from Alaska

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