title: Age- and gender-related accumulation of perfluoroalkyl substances in captive Chinese alligators (Alligator sinensis).
abstract: Fourteen perfluoroalkyl substances (PFASs) were measured in serum of the highly endangered captive Chinese alligators, whole body homogenates of six kinds of fish (alligator prey species), and pond water (alligator habitat) in the Anhui Research Center for Chinese Alligator Reproduction. Six PFASs, including PFOS and five perfluorinated carboxylates, were detected in all alligator samples. The most dominant PFAS was PFUnDA, with a mean value of 31.4 ng/mL. Significant positive correlations were observed among the six PFASs, suggesting that they shared similar sources of contamination. Significantly higher PFOS and PFUnDA levels were observed in males, but the other four PFCAs did not differ between genders. An age related PFAS bioaccumulation analysis showed a significant negative correlation of the concentrations for five PFCAs to age, which means that higher concentrations were found in younger animals. Bioaccumulation factors (BAF) in fish for PFASs ranged from 21 to 28,000, with lower BAF for PFOA than that for longer carbon chain PFCAs, including PFUnDA, PFDA, and PFNA.
authors: Key Laboratory of Animal Ecology and Conservation Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, PR China.
authors: Jianshe
authors: J
authors: Wang
authors: Yating
authors: Y
authors: Zhang
authors: Fang
authors: F
authors: Zhang
authors: Leo W Y
authors: LW
authors: Yeung
authors: Sachi
authors: S
authors: Taniyasu
authors: Eriko
authors: E
authors: Yamazaki
authors: Renping
authors: R
authors: Wang
authors: Paul K S
authors: PK
authors: Lam
authors: Nobuyoshi
authors: N
authors: Yamashita
authors: Jiayin
authors: J
authors: Dai
mesh_terms: D000489:Alligators and Crocodiles / Q000378:metabolism*; D000818:Animals; D004784:Environmental Monitoring; D005466:Fluorocarbons / Q000378:metabolism*; D008297:Male; D014874:Water Pollutants, Chemical / Q000378:metabolism*
chemical_list: D005466:Fluorocarbons; D014874:Water Pollutants, Chemical