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Wilson R.P., Ducamp J.J., Rees W.G., Culik B.M. & Niekamp K. (1992). Estimation of location:global coverage using light intensity. Wildlife telemetry, 19, 131–134.
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. (1997). Southern rock hopper penguin Eudyptes Chrysocome foraging at Possession Island. Polar Biol., 17, 323–329.
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Wilmes B., Glagla S., Albrecht D., Danchin A., Feller G. & Thomas S. (2006). Survival in the cold: proteome analysis of the psychrophilic marine bacterium Pseudoalteromonas haloplanktis TAC125..
Abstract: From Functional Genomics to Natural Products of Ma
Programme: 193
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Williams, J.; Gros, V.; Bonsang, B.; Kazan, V. (2001). HO cycle in 1997 and 1998 over the southern Indian Ocean derived from CO, radon, and hydrocarbon measurements made at Amsterdam Island. J. Geophys. Res., 106(d12).
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Williams R. & Capdeville D. (1996). Seabird interactions with trawl and longline fisheries for Dissostichus elegimoides and Champsocephalus gunnari. Ccamlr science, 3, 93–99.
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. (2006).
Abstract: IGAC conference
Cape Town, Sep. 2006
Programme: 415
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Williams J. et al. (2008). News from the OOMPH project (2005-2008).
Abstract: Annecy, Sept. 2008
Programme: 415
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Williams G D, Hindell M, Houssais M-N, Tamura T, Field I C, . (2011). 1812-0784, 7(2), 185–202.
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. (2013). Oxygen isotope dynamics of atmospheric nitrate over the Antarctic plateau: First combined measurements of ozone and nitrate 17O-excess (Δ17O) (Vol. EGU Vienna 2013).
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. (2023). Does contaminant exposure disrupt maternal hormones deposition? A study on per- and polyfluoroalkyl substances in an Arctic seabird (Vol. 868).
Abstract: Maternal effects are thought to be essential tools for females to modulate offspring development. The selective deposition of avian maternal hormones could therefore allow females to strategically adjust the phenotype of their offspring to the environmental situation encountered. However, at the time of egg formation, several contaminants are also transferred to the egg, including per- and polyfluoroalkyl substances (PFAS) which are ubiquitous organic contaminants with endocrine disrupting properties. It is, however, unknown if they can disrupt maternal hormone deposition. In this study we explored relationships between female PFAS burden and maternal deposition in the eggs of steroids (dihydrotestosterone, androstenedione and testosterone), glucocorticoids (corticosterone) and thyroid hormones (triiodothyronine and thyroxine) in a population of the Arctic-breeding black-legged kittiwake (Rissa tridactyla). Egg yolk hormone levels were unrelated to female hormone plasma levels. Second-laid eggs had significantly lower concentrations of androstenedione than first-laid eggs. Triiodothyronine yolk levels were decreasing with increasing egg mass but increasing with increasing females' body condition. Testosterone was the only transferred yolk hormone correlated to maternal PFAS burden: specifically, we found a positive correlation between testosterone in yolks and circulating maternal perfluorononanoic acid (PFNA), perfluorodecanoic acid (PFDcA) and perfluoroundecanoic acid (PFUnA) in first-laid eggs. This correlative study provides a first insight into the potential of some long-chain perfluoroalkyl acids to disrupt maternal hormones deposition in eggs and raises the question about the consequences of increased testosterone deposition on the developing embryo.
Keywords: Black-legged kittiwake Corticosterone Maternal effect PFAS Testosterone Thyroid hormones
Programme: 330
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