Journal
MARINE POLLUTION BULLETIN
Volume 158, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.marpolbul.2020.111435
Keywords
Seabirds; Plastics; Phthalates; Contaminants; Marine debris; Plastic ingestion
Funding
- ConocoPhillips endowment fund [12099 243678]
- US Fish and Wildlife Service Alaska Maritime National Wildlife Refuge
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Phthalates, plastic-derived contaminants, are of increasing global concern. This study quantified phthalates in seabirds collected across > 1700 km of the Aleutian Islands, Alaska, and contributes to a body of knowledge on plastic contaminants in marine wildlife. We measured six phthalate congeners in seabirds representing ten species and four feeding guilds. Phthalates were detected in 100% of specimens (n = 115), but varied among individuals (3.64-539.64 ng/g). DEHP and DBP occurred at an order of magnitude higher than other congeners. Total phthalates did not vary geographically, but differed among feeding guilds, with significantly higher concentrations in diving plankton-feeders compared to others. Plastic particles were detected in 36.5% of randomly subsampled seabird stomachs (n = 74), suggesting plastic ingestion as a potential route of phthalate exposure. Our findings suggest feeding behavior could influence exposure risk for seabirds and lend further evidence to the ubiquity of plastic pollutants in marine ecosystems.
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