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Age- and gender-related accumulation of perfluoroalkyl substances in captive Chinese alligators (Alligator sinensis)
Key Laboratory of Animal Ecology and Conservation Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China.
Key Laboratory of Animal Ecology and Conservation Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China.
College of Life Sciences, Anhui Normal University, Wuhu, China.
State Key Laboratory in Marine Pollution, Department of Biology and Chemistry, City University of Hong Kong, Hong Kong.ORCID iD: 0000-0001-6800-5658
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2013 (English)In: Environmental Pollution, ISSN 0269-7491, E-ISSN 1873-6424, Vol. 179, 61-67 p.Article in journal (Refereed) Published
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Abstract [en]

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.

Place, publisher, year, edition, pages
Elsevier, 2013. Vol. 179, 61-67 p.
Keyword [en]
Bioaccumulation factors (BAF); Biomagnifications; Chinese alligators; Perfluorinated carboxylates; Perfluoroalkyl substances
National Category
Environmental Sciences
Research subject
Enviromental Science
Identifiers
URN: urn:nbn:se:oru:diva-49965DOI: 10.1016/j.envpol.2013.04.020ISI: 000320745800009PubMedID: 23660395Scopus ID: 2-s2.0-84877326610OAI: oai:DiVA.org:oru-49965DiVA: diva2:950439
Note

Funding Agency:

National Natural Science Foundation of China 31025006

Available from: 2016-07-29 Created: 2016-04-28 Last updated: 2017-10-17Bibliographically approved

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Yeung, Leo W. Y.Lam, Paul K. S.Dai, Jiayin
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