Individual variation in biomarkers of health: Influence of persistent organic pollutants in Great skuas (Stercorarius skua) breeding at different geographical locations

Bourgeon, Sophie; Leat, Eliza H. K.; Magnusdottir, Ellen; Fisk, Aaron T.; Furness, Robert W.; Strøm, Hallvard; Hanssen, Sveinn Are; Petersen, Aevar; Ólafsdóttir, Kristín; Borgå, Katrine; Gabrielsen, Geir Wing; Bustnes, Jan Ove

doi:10.1016/j.envres.2012.08.004

Cited by 49 publications

(36 citation statements)

References 46 publications

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“…Although our study provided evidence of the presence of POPs in blood of chinstrap penguins from Antarctica, our POP levels are lower than those found in blood of great skuas (Stercorarius skua) from the Northern Hemisphere (Bourgeon et al 2012). Also, our HCB, PCB-118, PCB-138, PCB-153 and PCB-180 concentrations are lower than those levels reported by Sagerup et al (2014) in blood of blacklegged kittiwakes (Rissa tridactyla) from the Artic (3.80,4.87,18.39,12.43 and 2.27 ng/g, respectively), and they are not likely to be a threat for this population.…”

Section: Discussioncontrasting

confidence: 39%

“…Moreover, immunoglobulin IgY concentrations in seabirds available in the literature are not always expressed in comparable units. In Artic seabirds, Sagerup et al (2014) expressed IgY levels as percentage of a pre-defined positive control, while Bourgeon et al (2012) reported IgY levels in units of absorbance. Those few studies in penguin blood performed by Barbosa et al (2007) and Bourgeon et al (2007), reported levels of IgY in absorbance units instead of mass/volume (mg/L, g/L, or μg/mL), making almost impossible any comparison with our results.…”

Section: Discussionmentioning

confidence: 99%

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Assessment of persistent organic pollutants and their relationship with immunoglobulins in blood of penguin colonies from Antarctica

Jara

Celis

Araneda

et al. 2018

Austral j. vet. sci.

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ABSTRACT. Persistent organic pollutants (POPs) may affect the immune system of seabirds, and some field studies have examined this effect. There are evidences that POPs cause negative effects on the immune system, but in Antarctic penguins data are scarce. In order to assess the risks that POPs may have on wild animals, some immunological studies constitute a good alternative. Determining the levels of immunoglobulins can deliver relevant information about the potential impact of POPs in seabirds from different environments. However, there are very few records in penguins so far. The aim of the present work was to quantify the concentrations of polychlorinated biphenyls (PCBs), hexachlorobenzene (HCB), dichlorodiphenyltrichloroethane (∑DDT), endosulfans, and immunoglobulin IgY in blood samples of colonies of chinstrap penguins (Pygoscelis antarctica) that inhabit in the Antarctic Peninsula area. Analysis of POPs in blood samples was carried out through extraction with QuEChERS method, followed by gas chromatography. Detection of IgY concentrations was achieved by ELISA test, using anti-chicken antibodies. There was some significant correlation between immunoglobulin and the presence of PCBs and endosulfans. Even though the levels of these pollutants are low to cause any biological effect on the birds, the results are indicating some influence on the IgY concentrations in penguin blood.

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Section: Discussioncontrasting

confidence: 39%

Section: Discussionmentioning

confidence: 99%

Assessment of persistent organic pollutants and their relationship with immunoglobulins in blood of penguin colonies from Antarctica

Jara

Celis

Araneda

et al. 2018

Austral j. vet. sci.

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“…Nevertheless, while feather CORT were highest in Africa, POP exposure was globally lower in Africa compared to the other winter areas. Moreover, no clear relationships were identified between feather CORT levels and POP levels in breeding great skuas [20].…”

Section: Discussionmentioning

confidence: 92%

“…To avoid gender-specific differences in physiology and/or behaviour, 94 incubating females were caught in 2009 in three different colonies: Bjørnøya, Svalbard (74°21′N, 19°05′E) (N = 33), south-east Iceland (63°57′N, 16°24′W) (N = 32) and Foula, Shetland (60°08′N, 2°05′W) (N = 29) (see Bourgeon et al [20] for a more detailed description of the sampling areas and techniques). Nests were followed from laying throughout chick rearing with laying date being calculated using hatching dates whenever unknown.…”

Section: Methodsmentioning

confidence: 99%

Feather Corticosterone Levels on Wintering Grounds Have No Carry-Over Effects on Breeding among Three Populations of Great Skuas (Stercorarius skua)

et al. 2014

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Environmental conditions encountered by migratory seabirds in their wintering areas can shape their fitness. However, the underlying physiological mechanisms remain largely unknown as birds are relatively inaccessible during winter. To assess physiological condition during this period, we measured corticosterone concentrations in winter-grown primary feathers of female great skuas (Stercorarius skua) from three breeding colonies (Bjørnøya, Iceland, Shetland) with wintering areas identified from characteristic stable isotope signatures. We subsequently compared winter feather corticosterone levels between three wintering areas (Africa, Europe and America). Among females breeding in 2009, we found significant differences in feather corticosterone levels between wintering areas. Surprisingly, levels were significantly higher in Africa despite seemingly better local ecological factors (based on lower foraging effort). Moreover, contrary to our predictions, females sharing the same wintering grounds showed significant differences in feather corticosterone levels depending on their colony of origin suggesting that some skuas could be using suboptimal wintering areas. Among females wintering in Africa, Shetland females showed feather corticosterone levels on average 22% lower than Bjørnøya and Iceland females. Finally, the lack of significant relationships between winter feather corticosterone levels and any of the breeding phenology traits does not support the hypothesis of potential carry-over effects of winter feather corticosterone. Yet, the fitness consequences of elevated feather corticosterone levels remain to be determined.

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“…Immature Great Skuas may spend several years attending 'club' sites at colonies before breeding (Klomp & Furness 1990), and club birds in better body condition are more likely to succeed in establishing themselves as breeders (Diaz Rios 2007). Long-term and large-scale ringing of Great Skua chicks, colour ringing of cohorts of chicks, trapping and individual colourringing of birds on club sites (Klomp & Furness 1992a, Diaz Rios 2007 and trapping of birds on nests (Ratcliffe et al 1998, Bourgeon et al 2012 provide opportunities to assess the age at first breeding of Great Skuas at several Scottish colonies, and how this relates to conditions at the colony.…”

Section: Density Dependence In Seabirds: Great Skuasmentioning

confidence: 99%

Individual variation in biomarkers of health: Influence of persistent organic pollutants in Great skuas (Stercorarius skua) breeding at different geographical locations

Cited by 49 publications

References 46 publications

Assessment of persistent organic pollutants and their relationship with immunoglobulins in blood of penguin colonies from Antarctica

Assessment of persistent organic pollutants and their relationship with immunoglobulins in blood of penguin colonies from Antarctica

Feather Corticosterone Levels on Wintering Grounds Have No Carry-Over Effects on Breeding among Three Populations of Great Skuas (Stercorarius skua)

Density dependence in seabirds: Great SkuasStercorarius skuastart to breed at a younger age when conditions are better

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