biostudies-literatureUnknown84(11)Terajima TPersistent organic chemicals are non-biodegradable in nature and have a tendency to bioaccumulate in the top organisms of the food chain. We measured persistent organic chemicals, including polychlorinated biphenyls (PCBs), dichlorodiphenyldichloroethylene (DDE), and benzotriazole-based ultraviolet stabilizers (UV-BTs), in the serum of captive king penguins (Aptenodytes patagonicus) using gas chromatography with an electron capture detector and mass spectrometry to examine their age-related accumulation. PCBs, DDE, UV-PS, and UV-9 were detected in the blood of captive king penguins, and the concentrations of total PCBs, DDE, and UV-9 were positively correlated with age. These results suggest that there is a similar age-related accumulation of persistent organic chemicals in marine birds in the wild, and that older individuals are at a higher risk of contamination.The Journal of veterinary medical science1551-1555https://www.ebi.ac.uk/biostudies/studies/S-EPMC9705817biostudies-literatureAge-related accumulation of persistent organic chemicals in captive king penguins (Aptenodytes patagonicus).PMC9705817Terajima TNagaoka KTakada HKobayashi SWatanabe GMizukawa KNakano YShibahara AGodwin JRfalseAge-related accumulation of persistent organic chemicals in captive king penguins (Aptenodytes patagonicus).Persistent organic chemicals are non-biodegradable in nature and have a tendency to bioaccumulate in the top organisms of the food chain. We measured persistent organic chemicals, including polychlorinated biphenyls (PCBs), dichlorodiphenyldichloroethylene (DDE), and benzotriazole-based ultraviolet stabilizers (UV-BTs), in the serum of captive king penguins (Aptenodytes patagonicus) using gas chromatography with an electron capture detector and mass spectrometry to examine their age-related accumulation. PCBs, DDE, UV-PS, and UV-9 were detected in the blood of captive king penguins, and the concentrations of total PCBs, DDE, and UV-9 were positively correlated with age. These results suggest that there is a similar age-related accumulation of persistent organic chemicals in marine birds in the wild, and that older individuals are at a higher risk of contamination.2022-01-01T00:00:00Z2022 Nov2025-04-26T12:29:04.65Z2025-04-06T14:01:22.582ZS-EPMC97058173619861010.1292/jvms.22-0245