Within and between breeding-season changes in contaminant occurrence and body condition in the Antarctic breeding south polar skua

Midthaug, Hilde Karin; Hitchcock, Daniel J.; Bustnes, Jan Ove; Polder, Anuschka; Descamps, Sébastien; Tarroux, Arnaud; Soininen, Eeva M.; Borgå, Katrine

doi:10.1016/j.envpol.2021.117434

Cited by 11 publications

(7 citation statements)

References 60 publications

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“…given as footnotes to Table 1 and in a separate Supplementary Table 2 in Supporting Information and detailed results from these studies are reported in detail in Munoz et al (2017) and Midthaug et al (2021).…”

Section: Sample Collectionmentioning

confidence: 99%

“…To determine the relative TP of the studied individuals and calculate biomagnification of PFAS in the two analysed food webs, we quantified values of δ 13 C and δ 15 N. Available stable isotope data from the previous studies of the same material were included: skua red blood cells from Svarthamaren in 2013/2014 as part of Midthaug et al (2021). All the samples from Dumont d'Urville in 2011/2012 were analysed for stable isotopes at Littoral Environnement et Sociétés (LIENSs) (Adélie penguins, Carravieri et al, 2020;south polar skuas, Carravieri et al, unpublished 1 ).…”

Section: Stable Isotope Analysismentioning

confidence: 99%

“…One of these migrating species is the south polar skua (Catharacta maccormicki), which overwinters in tropical or temperate waters outside the Southern Ocean and returns to Antarctica to breed in the austral summer (Weimerskirch et al, 2015). PFASs have been quantified in south polar skuas during breeding across Antarctica (Tao et al, 2006;Munoz et al, 2017;Midthaug et al, 2021), with some of the highest PFAS concentrations recorded in wildlife in sub-tropical and sub-Antarctic waters (Roscales et al, 2019). In the inland colony of Svarthamaren at Dronning Maud Land, the south polar skua PFAS levels increased during the breeding season (Midthaug et al, 2021), which suggests that local prey is a significant source of PFAS.…”

Section: Introductionmentioning

confidence: 99%

“…PFASs have been quantified in south polar skuas during breeding across Antarctica (Tao et al, 2006;Munoz et al, 2017;Midthaug et al, 2021), with some of the highest PFAS concentrations recorded in wildlife in sub-tropical and sub-Antarctic waters (Roscales et al, 2019). In the inland colony of Svarthamaren at Dronning Maud Land, the south polar skua PFAS levels increased during the breeding season (Midthaug et al, 2021), which suggests that local prey is a significant source of PFAS.…”

Section: Introductionmentioning

confidence: 99%

“…We expected the skua PFAS to reflect their local prey and, thus, the BMFs to be comparable between two colonies, one inland, and one coastal as well as comparable to avian PFAS BMFs from other areas. This study is based on a combination of new data and published PFAS data from skuas at Svarthamaren (Midthaug et al, 2021) and Dumont d'Urville (Munoz et al, 2017) as well as stable isotope data in Adélie penguin chicks (Carravieri et al, 2020)…”

Section: Introductionmentioning

confidence: 99%

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Bioaccumulation of Per and Polyfluoroalkyl Substances in Antarctic Breeding South Polar Skuas (Catharacta maccormicki) and Their Prey

Garcia¹,

Descamps

Herzke

et al. 2022

Front. Mar. Sci.

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Per and polyfluoroalkyl substances (PFASs) are found in Antarctic wildlife, with high levels in the avian top predator south polar skua (Catharacta maccormicki). As increasing PFAS concentrations were found in the south polar skua during the breeding season in Antarctica, we hypothesised that available prey during the breeding period contributes significantly to the PFAS contamination in skuas. To test this, we compared PFAS in south polar skuas and their main prey from two breeding sites on opposite sides of the Antarctic continent: Antarctic petrel (Thalassoica antarctica) stomach content, eggs, chicks, and adults from Svarthamaren in Dronning Maud Land and Adélie penguin chicks (Pygoscelis adeliae) from Dumont d’Urville in Adélie Land. Of the 22 PFAS analysed, seven were present in the majority of samples, except petrel stomach content [only perfluoroundecanoate (PFUnA) present] and Adélie penguins (only four compounds present), with increasing concentrations from the prey to the skuas. The biomagnification factors (BMFs) were higher at Dumont d’Urville than Svarthamaren. When adjusted to reflect one trophic level difference, the BMFs at Svarthamaren remained the same, whereas the ones at Dumont d’Urville doubled. At both the colonies, the skua PFAS pattern was dominated by perfluorooctanesulfonic acid (PFOS), followed by PFUnA, but differed with the presence of branched PFOS and perfluorotetradecanoate (PFTeA) and lack of perfluorononanoate (PFNA) and perfluorodecanoate (PFDA) at Dumont d’Urville. At Svarthamaren, the pattern in the prey was comparable to the skuas, but with a higher relative contribution of PFTeA in prey. At Dumont d’Urville, the pattern in the prey differed from the skuas, with the domination of PFUnA and the general lack of PFOS in prey. Even though the PFAS levels are low in Antarctic year-round resident prey, the three lines of evidence (pattern, BMF difference, and BMF adjusted to one trophic level) suggest that the Antarctic petrel are the significant source of PFAS in the Svarthamaren skuas, whereas the skuas in Dumont d’Urville have other important sources to PFAS than Adélie penguin, either in the continent or external on the inter-breeding foraging grounds far from Antarctica.

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Section: Sample Collectionmentioning

confidence: 99%

Section: Stable Isotope Analysismentioning

confidence: 99%