Individual variability in contaminants and physiological status in a resident Arctic seabird species.

摘要: Abstract While migratory seabirds dominate ecotoxicological studies within the Arctic, there is limited knowledge about exposure and potential effects from circulating legacy emerging contaminants in species who reside high-Arctic all year round. Here, we focus on case of Mandt's Black guillemot (Cepphus grylle mandtii) breeding at Kongsfjorden, Svalbard (79.00°N, 11.66°E) investigate to relation individual physiological status, i.e. body condition, oxidative stress relative telomere length. Despite its benthic-inshore foraging strategy, displayed overall similar contaminant concentrations blood during incubation (∑PCB11 (15.7 ng/g w.w.) > ∑PFAS5 (9.9 ng/g w.w.) > ∑Pesticides9 (6.7 ng/g w.w.) > ∑PBDE4 (2.7 ng/g w.w.), Hg (0.3 μg/g d.w.) compared an Arctic seabird which several contaminant-related responses have been observed. guillemots poorer condition tended display higher levels contaminants, reactive oxygen metabolites, lower plasmatic antioxidant capacity, shorter lengths; however low sample size restrict any strong conclusions. Nevertheless, our data suggests that nonlinear relationships with a threshold may exist between accumulated status birds. These findings were used build hypothesis be applied future modelling for describing how chronic linked dynamics.