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Geographic Differences in Persistent Organic Pollutant Levels of Yellowfin Tuna.
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- Author(s): Nicklisch, Sascha C.T.1; Bonito, Lindsay T.1; Sandin, Stuart1; Hamdoun, Amro1
- Source:
Environmental Health Perspectives. Jun2017, Vol. 125 Issue 6, p1-13. 13p. 2 Charts, 6 Graphs, 1 Map.- Subject Terms:
*Animal experimentation; *Carcinogens; *Fishes; *Food contamination; *Food supply; *Gas chromatography; *Liquid chromatography; *Mass spectrometry; *Ocean; *Pollutants; Muscle analysis; Analysis of variance; Factor analysis; Glycoproteins; Population geography; Research funding; Risk assessment; Statistics; Data analysis; Maximum likelihood statistics; Data analysis software; Descriptive statistics; Kruskal-Wallis Test - Source:
- Additional Information
- Subject Terms:
- Abstract: BACKGROUND: Fish are a source of persistent organic pollutants (POPs) in the human diet. Although species, trophic level, and means of production are typically considered in predicting fish pollutant load, and thus recommendations of consumption, capture location is usually not accounted for. OBJECTIVES: Yellowfin tuna (Thunnus albacares) are harvested from across the world's oceans and are widely consumed. Here, we determined geographic variation in the overall mass, concentration, and composition of POPs in yellowfin and examined the differences in levels of several POP congeners of potential relevance to human health. METHODS: We sampled dorsal muscle of 117 yellowfin tuna from 12 locations worldwide, and measured POP levels using combined liquid or gas chromatography and mass spectrometry according to U.S. Environmental Protection Agency standard procedures. RESULTS: POP levels varied significantly among sites, more than 36-fold on a mass basis. Individual fish levels ranged from 0.16 to 138.29 ng/g wet weight and lipid-normalized concentrations from 0.1 to 12.7 μM. Levels of 10 congeners that interfere with the cellular defense protein P-glycoprotein, termed transporter interfering compounds (TICs), ranged from 0.05 to 35.03 ng/g wet weight and from 0.03 to 3.32 μM in tuna lipid. Levels of TICs, and their individual congeners, were strongly associated with the overall POP load. Risk-based analysis of several carcinogenic POPs indicated that the fish with the highest levels of these potentially harmful compounds were clustered at specific geographic locations. CONCLUSIONS: Capture location is an important consideration when assessing the level and risk of human exposure to POPs through ingestion of wild fish. [ABSTRACT FROM AUTHOR]
- Abstract: Copyright of Environmental Health Perspectives is the property of National Institute of Environmental Health Sciences and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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