Daniel Hitchcock

• Hitchcock, Daniel James; Andersen, Tom; Varpe, Øystein & Borgå, Katrine (2019). Effects of Maternal Reproductive Investment on Sex-Specific Pollutant Accumulation in Seabirds: A Meta-Analysis. Environmental Science and Technology.  ISSN 0013-936X.  53(13), s 7821- 7829 . doi: 10.1021/acs.est.9b01296
• Hitchcock, Daniel James; Andersen, Tom; Varpe, Øystein; Loonen, Maarten; Warner, Nicholas Alexander; Herzke, Dorte; Tombre, Ingunn; Griffin, Larry R.; Shimmings, Paul & Borgå, Katrine (2019). Potential Effect of Migration Strategy on Pollutant Occurrence in Eggs of Arctic Breeding Barnacle Geese (Branta leucopsis). Environmental Science and Technology.  ISSN 0013-936X.  53(9), s 5427- 5435 . doi: 10.1021/acs.est.9b00014 Fulltekst i vitenarkiv. Vis sammendrag

  Arctic-breeding geese acquire resources for egg production from overwintering and breeding grounds, where pollutant exposure may differ. We investigated the effect of migration strategy on pollutant occurrence of lipophilic polychlorinated biphenyls (PCBs) and protein-associated poly- and perfluoroalkyl substances (PFASs) and mercury (Hg) in eggs of herbivorous barnacle geese (Branta leucopsis) from an island colony on Svalbard. Stable isotopes (δ13C and δ15N) in eggs and vegetation collected along the migration route were similar. Pollutant concentrations in eggs were low, reflecting their terrestrial diet (∑PCB = 1.23 ± 0.80 ng/g ww; ∑PFAS = 1.21 ± 2.97 ng/g ww; Hg = 20.17 ± 7.52 ng/g dw). PCB concentrations in eggs increased with later hatch date, independently of lipid content which also increased over time. Some females may remobilize and transfer more PCBs to their eggs, by delaying migration several weeks, relying on more polluted and stored resources, or being in poor body condition when arriving at the breeding grounds. PFAS and Hg occurrence in eggs did not change throughout the breeding season, suggesting migration has a greater effect on lipophilic pollutants. Pollutant exposure during offspring production in Arctic-breeding migrants may result in different profiles, with effects becoming more apparent with increasing trophic levels.

• Hitchcock, Daniel James; Varpe, Øystein; Andersen, Tom & Borgå, Katrine (2017). Effects of reproductive strategies on pollutant concentrations in pinnipeds: a meta-analysis. Oikos.  ISSN 0030-1299.  126(6), s 772- 781 . doi: 10.1111/oik.03955
• Bizarro, Cristina; Eide, Marta; Hitchcock, Daniel James; Goksøyr, Anders & Ortiz-Zarragoitia, Maren (2016). Single and mixture effects of aquatic micropollutants studied in precision-cut liver slices of Atlantic cod (Gadus morhua). Aquatic Toxicology.  ISSN 0166-445X.  177, s 395- 404 . doi: 10.1016/j.aquatox.2016.06.013

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• Hitchcock, Daniel James; Loonen, M. J.; Warner, Nicholas Alexander; Herzke, Dorte; Tombre, Ingunn; Shimmings, Paul; Griffin, L. R.; Varpe, Øystein; Andersen, Tom & Borgå, Katrine (2018). Migration effects on pollutants in eggs of Arctic - breeding geese.

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