Polybrominated diphenyl ether congener patterns, hexabromocyclododecane, and brominated biphenyl 153 in eggs of peregrine falcons (Falco peregrinus) breeding in Sweden
Identifieur interne : 000575 ( Main/Exploration ); précédent : 000574; suivant : 000576Polybrominated diphenyl ether congener patterns, hexabromocyclododecane, and brominated biphenyl 153 in eggs of peregrine falcons (Falco peregrinus) breeding in Sweden
Auteurs : Anna-Karin Johansson [Suède] ; Ulla Sellström [Suède] ; Peter Lindberg [Suède] ; Anders Bignert [Suède] ; Cynthia A. De Wit [Suède]Source :
- Environmental Toxicology and Chemistry [ 0730-7268 ] ; 2009-01.
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Abstract
Previous analyses of 52 peregrine falcon (Falco peregrinus) eggs collected from two wild and one captive population in Sweden 1987 through 1999 were complemented by including additional polybrominated diphenyl ether (PBDE) congeners (BDE −35, −183, −184, −185, −196, −197, −;203, and −207). In addition, 31 eggs not previously analyzed for hexabromocyclododecane (HBCD) and BDE‐209 were analyzed for these. Geometric mean concentrations of ΣPBDEs, HBCD, and the hexabrominated biphenyl (BB‐153) were 3,100, 140, and 81 ng/g of lipid weight for the southern population; 2,500, 110, and 84 ng/g of lipid weight for the northern population; and 47, not detected, and 8 ng/g of lipid weight for the captive population. The BDE congener pattern was dominated by BDE‐153, −99, and −100. The results were used to investigate whether a difference in PBDE congener pattern could be distinguished between the two wild populations of peregrine falcons due to different diets, as the southern population preys mainly on birds belonging to the terrestrial food chain while the northern population preys more on aquatic birds. A multivariate t‐test showed a subtle but significant (p < 0.001) difference in PBDE congener pattern between the two populations. However, our hypothesis that higher‐brominated congeners of PBDEs would be present to a greater extent in the terrestrial food chain was not supported by principal component analysis. The average brood size for individual females from the southern population decreased with increasing concentrations of ΣPBDE in the eggs (log‐linear regressionp < 0.01).
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DOI: 10.1897/08-142.1
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In addition, 31 eggs not previously analyzed for hexabromocyclododecane (HBCD) and BDE‐209 were analyzed for these. Geometric mean concentrations of ΣPBDEs, HBCD, and the hexabrominated biphenyl (BB‐153) were 3,100, 140, and 81 ng/g of lipid weight for the southern population; 2,500, 110, and 84 ng/g of lipid weight for the northern population; and 47, not detected, and 8 ng/g of lipid weight for the captive population. The BDE congener pattern was dominated by BDE‐153, −99, and −100. The results were used to investigate whether a difference in PBDE congener pattern could be distinguished between the two wild populations of peregrine falcons due to different diets, as the southern population preys mainly on birds belonging to the terrestrial food chain while the northern population preys more on aquatic birds. A multivariate t‐test showed a subtle but significant (p < 0.001) difference in PBDE congener pattern between the two populations. However, our hypothesis that higher‐brominated congeners of PBDEs would be present to a greater extent in the terrestrial food chain was not supported by principal component analysis. 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De Wit</name><name sortKey="Johansson, Anna Arin" sort="Johansson, Anna Arin" uniqKey="Johansson A" first="Anna-Karin" last="Johansson">Anna-Karin Johansson</name><name sortKey="Lindberg, Peter" sort="Lindberg, Peter" uniqKey="Lindberg P" first="Peter" last="Lindberg">Peter Lindberg</name><name sortKey="Sellstrom, Ulla" sort="Sellstrom, Ulla" uniqKey="Sellstrom U" first="Ulla" last="Sellström">Ulla Sellström</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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