Variation von PCB-Gemischen in Eiern und Vögeln des Wattenmeeres

Beyerbach, Martin; Becker, Peter; Büthe, Annegret; Denker, Eckhard; Heidmann, Walter A.; Yanes, G. Staats De

doi:10.1007/bf01640428

Cited by 10 publications

(2 citation statements)

References 15 publications

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“…The nonortho (coplanar) 3,3Ј,4,4Ј,5-pentachlorobiphenyl (PCB 126) contributed more than 50% of the total TEQs, although the di-ortho-substituted (nonplanar) 2,2Ј,4,4Ј,5,5Ј-hexachlorobiphenyl (PCB 153) contributed the greatest mass of PCBs [19]. This pattern is similar to that reported elsewhere in Europe and North America [21,22,24,26].…”

Section: Introductionsupporting

confidence: 76%

Biochemical and developmental effects of dietary exposure to polychlorinated biphenyls 126 and 153 in common tern chicks (Sterna hirundo)

Bosveld

Nieboer

Bont

et al. 2000

Enviro Toxic and Chemistry

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Abstract-Effects of PCBs were studied in common terns (Sterna hirundo).Hatchlings from eggs collected from Dutch breeding colonies and incubated artificially were raised to an age of 21 d. The birds were fed fish spiked with PCB 126 alone or in combination with PCB 153 (1:1,000), resulting in concentrations in the food ranging from 0.01 to 1.2 ng toxic equivalents (TEQs)/g wet weight.The most sensitive effect parameter was induction of hepatic CYP1A-associated ethoxyresorufin-O-deethylation (EROD) activity, and a nonlinear concentration-effect relationship could be determined with the TEQ concentration (r ϭ 0.967, p Ͻ 0.001). Induction of pentoxyresorufin-O-depenthylation and methoxyresorufin-O-demethylation activities was observed at dose levels similar to those that induced EROD activity. The estimated lowest-observed-effect level for induction of CYP1A in the common tern was approx. 25 ng TEQ/g liver lipid, which was caused by concentrations in the food of approx. 0.6 ng TEQ/g fish wet weight. At these concentrations, a 50% reduction in plasma total thyroxine compared with controls also was observed. Concentrations of plasma total thyroxine were negatively correlated with hepatic TEQ concentrations (r ϭ 0.523, p Ͻ 0.01), but the shape of the nonlinear concentration-effect relationship did not allow determination of a lowest-observed-effect level. No changes were found for hepatic hydroxylation of testosterone. Bursa weight decreased proportionally to hepatic concentrations of TEQs (r ϭ 0.433, p Ͻ 0.05) and showed a similar sensitivity as that observed for EROD activity. Concentrations of TEQs in The Netherlands are approx. 0.1 ng TEQ/g wet weight fish, which is approximately six times lower than the lowest-observed-effect level for CYP1A induction in terns as estimated in this study. It is concluded that no overt effects on growth and development in the common tern are expected with this background exposure during the posthatch period.

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Section: Introductionsupporting

confidence: 76%

Biochemical and developmental effects of dietary exposure to polychlorinated biphenyls 126 and 153 in common tern chicks (Sterna hirundo)

Bosveld

Nieboer

Bont

et al. 2000

Enviro Toxic and Chemistry

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“…1997). Auch geographische Unterschiede wurden diesbezüglich aufgedeckt (Beyerbach et al. 1993, Becker & Sommer 1998, Becker et al.…”

Section: Introductionunclassified

Veranderungen in der Zusammensetzung der PCB- und DDT-Gemische in verschiedenen Lebensstadien der Wiesenweihe (Circus pygargus) und der Rohrweihe (Circus aeruginosus) in Nordrhein-Westfalen, Deutschland.

Denker

Büthe

Glimm³

et al. 2003

J f?r Ornithologie

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Summary Changes in the DDT and PCB burden in life stages of Montagu's (Circus pygargus) and MarshHarriers (Circus aeruginosus) from North-Rhine Westfalia, GermanyEgg and liver samples of Montagu's and Marsh Harriers from the 1990's were examined for their burden of DDT and PCB. The DDT burden in both species was distinctly higher in the eggs than in juveniles and adults, whereby the values for the adults were clearly higher than those for the juveniles. The composition of the DDT isomers of both species varies between the life stages. In the egg samples nearly only p,p'-DDE was found, while in the livers of the adults and more especially of the juveniles higher parts of p,p'-DDT were detected. In both species the PCB burden of the eggs and of the adults was clearly higher than that of the juveniles. The composition of the PCB mixtures of both species differed distinctly between each of the life stages. While the PCB mixtures in eggs and in the livers of adults are nearly identical, in the livers of juveniles a distinct shift to lower chlorinated congeners reaching higher parts of the PCB mixtures becomes evident. The changes in the composition of DDT and PCB mixtures in the different life stages reflect a new uptake of these xenobiotics with the food animals.

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Veränderungen in der Zusammensetzung der PCB- und DDT-Gemische in verschiedenen Lebensstadien der Wiesenweihe (Circus pygargus) und der Rohrweihe (Circus aeruginosus) in Nordrhein-Westfalen, Deutschland.

Denker

Büthe

Glimm³

et al. 2003

J Ornithol

Self Cite

View full text Add to dashboard Cite

Changes in the DDT and PCB burden in life stages of Montagu's (Circus pygargus) and MarshHarriers (Circus aeruginosus) from North-Rhine Westfalia, GermanyEgg and liver samples of Montagu's and Marsh Harriers from the 1990's were examined for their burden of DDT and PCB. The DDT burden in both species was distinctly higher in the eggs than in juveniles and adults, whereby the values for the adults were clearly higher than those for the juveniles. The composition of the DDT isomers of both species varies between the life stages. In the egg samples nearly only p,p'-DDE was found, while in the livers of the adults and more especially of the juveniles higher parts of p,p'-DDT were detected. In both species the PCB burden of the eggs and of the adults was clearly higher than that of the juveniles. The composition of the PCB mixtures of both species differed distinctly between each of the life stages. While the PCB mixtures in eggs and in the livers of adults are nearly identical, in the livers of juveniles a distinct shift to lower chlorinated congeners reaching higher parts of the PCB mixtures becomes evident. The changes in the composition of DDT and PCB mixtures in the different life stages reflect a new uptake of these xenobiotics with the food animals.

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Variation von PCB-Gemischen in Eiern und Vögeln des Wattenmeeres

Cited by 10 publications

References 15 publications

Biochemical and developmental effects of dietary exposure to polychlorinated biphenyls 126 and 153 in common tern chicks (Sterna hirundo)

Biochemical and developmental effects of dietary exposure to polychlorinated biphenyls 126 and 153 in common tern chicks (Sterna hirundo)

Veranderungen in der Zusammensetzung der PCB- und DDT-Gemische in verschiedenen Lebensstadien der Wiesenweihe (Circus pygargus) und der Rohrweihe (Circus aeruginosus) in Nordrhein-Westfalen, Deutschland.

Veränderungen in der Zusammensetzung der PCB- und DDT-Gemische in verschiedenen Lebensstadien der Wiesenweihe (Circus pygargus) und der Rohrweihe (Circus aeruginosus) in Nordrhein-Westfalen, Deutschland.

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