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dc.contributor.authorNacci, Diane E.  Concept link
dc.contributor.authorHahn, Mark E.  Concept link
dc.contributor.authorKarchner, Sibel I.  Concept link
dc.contributor.authorJayaraman, Saro  Concept link
dc.contributor.authorMostello, Carolyn  Concept link
dc.contributor.authorMiller, Kenneth M.  Concept link
dc.contributor.authorBlackwell, Carma Gilchrist  Concept link
dc.contributor.authorNisbet, Ian C. T.  Concept link
dc.date.accessioned2016-11-04T18:06:06Z
dc.date.available2017-08-26T08:30:53Z
dc.date.issued2016-09
dc.identifier.urihttps://hdl.handle.net/1912/8497
dc.descriptionAuthor Posting. © The Author(s), 2016. This is the author's version of the work. It is posted here by permission of American Chemical Society for personal use, not for redistribution. The definitive version was published in Environmental Science & Technology 50 (2016): 10226–10235, doi:10.1021/acs.est.6b02108.en_US
dc.description.abstractCommon and roseate terns are migratory piscivorous seabirds with major breeding colonies within feeding range of the PCB-contaminated New Bedford Harbor (NBH, MA, USA) Superfund site. Our longitudinal study shows that before PCB discharges into NBH ceased (late 1970s), tern eggs had very high but variable PCB concentrations. But egg concentrations of PCBs as well as DDE, the degradation product of the ubiquitous global contaminant DDT, have since declined. Rate constants for temporal decline of PCB congeners in tern eggs varied inversely with log10KOW (n-octanol-water partition coefficient), shifting egg congener patterns away from those characterizing NBH sediment. To estimate the toxic effects on tern eggs of PCB dioxin-like congener (DLC) exposures, we extrapolated published laboratory data on common terns to roseate terns by characterizing genetic and functional similarities in species aryl-hydrocarbon receptors (AHRs), which mediate DLC sensitivity. Our assessment of contaminant risks suggests that terns breeding near NBH were exposed historically to toxic levels of PCBs and DDE; however, acute effects on tern egg development have become less likely since the 1970s. Our approach demonstrates how comparative genetics at target loci can effectively increase the range of inference for chemical risk assessments from tested to untested and untestable species.en_US
dc.description.sponsorshipThis work was supported in part by NOAA grant number NA14OAR4170074 (Woods Hole Sea Grant Project R/P-80) and by National Institute of Environmental Health Sciences (NIEHS) grant P42ES007381 (Superfund Basic Research Program at Boston University).en_US
dc.language.isoen_USen_US
dc.relation.urihttps://doi.org/10.1021/acs.est.6b02108
dc.subjectTernsen_US
dc.subjectSpecies sensitivityen_US
dc.subjectNew Bedforden_US
dc.subjectPCBsen_US
dc.subjectEcological risk assessmenten_US
dc.titleIntegrating monitoring and genetic methods to infer historical risks of PCBs and DDE to common and roseate terns nesting near the New Bedford Harbor Superfund site (Massachusetts, USA)en_US
dc.typePreprinten_US
dc.description.embargo2017-08-26en_US


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