AI Article Synopsis
- The red-crowned crane, a Special Natural Monument in Japan, was studied for persistent organic pollutants (POPs) found in its muscle tissues.
- The highest levels of pollutants detected were polychlorinated biphenyls (PCBs) at 240 ng/g lipid weight, followed by dichlorodiphenyltrichloroethane (DDTs) and others, with significant correlations among the pollutant concentrations.
- No noticeable differences in contaminant levels were found between male and female cranes, but a high enantiomeric excess of (+)-alpha-HCH was observed, indicating variation in the types of pollutants affecting these birds.
Article Abstract
The red-crowned crane (Grus japonensis) from eastern Hokkaido is classified as a Special Natural Monument in Japan. In this study, we determined the concentrations of persistent organic pollutants (POPs) in red-crowned crane muscle tissues (n = 47). Polychlorinated biphenyls (PCBs) had the highest median concentration (240ng/g lipid weight), followed by dichlorodiphenyltrichloroethane and its metabolites (DDTs) (150ng/g lipid weight), chlordane-related compounds (CHLs) (36ng/g lipid weight), hexachlorobenzene (HCB) (16ng/g lipid weight), hexachlorocyclohexanes (HCHs) (4.4ng/g lipid weight), polybrominated diphenyl ethers (PBDEs) (1.8ng/g lipid weight), and finally, Mirex (1.5ng/g lipid weight). Additionally, a positive correlation was found among POP concentrations. No sex differences beyond body parameters were observed. Additionally, red-crowned cranes exhibited a high enantiomeric excess of (+)-alpha-HCH, with enantiomer fractions varying from 0.51 to 0.87 (average: 0.69).
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| http://dx.doi.org/10.1016/j.ecoenv.2017.08.060 | DOI Listing |
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