Contaminants in eggs of some waterbird species from the Scheldt estuary, SW Netherlands

Stronkhorst, J.; Ysebaert, Tom; Smedes, Foppe; Meininger, P.L.; Dirksen, S.; Boudewijn, T.J.

doi:10.1016/0025-326x(93)90409-d

Cited by 23 publications

(7 citation statements)

References 14 publications

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“…Other studies, however, contrast with the above. For example, Stronkhorst et al [23] found differences in congener patterns between the diet and bird tissues: lower chlorinated biphenyls were more abundant in the diet and higher chlorinated biphenyls were more abundant in eggs of some aquatic birds from the Netherlands. Polychlorinated biphenyl congener patterns in several bird species from Canada were similar [24], reflecting perhaps similar metabolism, because birds had diverse diets.…”

Section: Discussionmentioning

confidence: 99%

Congener‐specific polychlorinated biphenyl patterns in eggs of aquatic birds from the lower laguna madre, texas

Mora

1996

Enviro Toxic and Chemistry

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Abstract-Eggs from four aquatic bird species nesting in the Lower Laguna Madre, Texas, were collected to determine differences and similarities in the accumulation of congener-specific polychlorinated biphenyls (PCBs) and to evaluate PCB impacts on reproduction. Because of the different toxicities of PCB congeners, it is important to know which congeners contribute most to total PCBs. The predominant PCB congeners were 153, 138, 180, 110, 118, 187, and 92. Collectively, congeners 153, 138, and 180 accounted for 26 to 42% of total PCBs. Congener 153 was the most abundant in Caspian terns (Sterna caspia) and great blue herons (Ardea herodias) and congener 138 was the most abundant in snowy egrets (Egretta thula) and tricolored herons (Egretta tricolor). Principal component analysis indicated a predominance of higher chlorinated biphenyls in Caspian terns and great blue herons and lower chlorinated biphenyls in tricolored herons. Snowy egrets had a predominance of pentachlorobiphenyls. These results suggest that there are differences in PCB congener patterns in closely related species and that these differences are more likely associated with the species' diet rather than metabolism. Total PCBs were significantly greater (p Ͻ 0.05) in Caspian terns than in the other species. Overall, PCBs in eggs of birds from the Lower Laguna Madre were below concentrations known to affect bird reproduction.

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Section: Discussionmentioning

confidence: 99%

Congener‐specific polychlorinated biphenyl patterns in eggs of aquatic birds from the lower laguna madre, texas

Mora

1996

Enviro Toxic and Chemistry

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“…High mo-PCB levels were expected based on a Dutch field study with cormorant chicks (Van den Berg e; where yolk-sac levels of 184 and 58 ixg mo-PCBs/g lipid were observed in respectively the B iesbosch and Oude Venen colony. Small herring contain significantly lower PCB-concentrations than fishes that overwinter locally, such as flounders (Platichthysflesus), 1.3 and 5.2 ~xg/g lipid respectively (Stronkhorst et al 1993). The difference in yolk-sac mo-PCB level between these two colonies was only 34 txg/g lipid, compared to 126 ixg/g lipid for the Cormorants.…”

Section: F O O D Choicementioning

confidence: 92%

“…Becker et al (1991) reported a reduced hatching success for common terns which correlated with increased PCB levels. The PCB-118 levels in common tern eggs from the brackish zone of the Dutch Western Scheldt estuary (0.1 to 0.7 Ixg/g WW, Stronkhorst et al 1993) partially overlap the range reported for Green Bay (0.32-1.56 tzg/g WW) where 75% reproductive impairment was observed (Kubiak et al 1989). Common terns offer the advantage of easily accessible nests, as they breed on the ground.…”

mentioning

confidence: 82%

“…The average yolk-sac mo-PCBlevels in common tern chicks however were only 40 txg/g lipid and 6 ixg/g lipid in respectively the most (Slijkplaat) and least (Zeewolde) contaminated colony. Stronkhorst et al (1993) observed for PCB-153 a biomagnification factor of 19 for the oystercatcher (egg:cockle) and for common tern only 5.5 (egg:clupeid). The other six common tern colonies hardly differed in yolk-sac mo-PCB levels (16-28 ]xg/g lipid, Figure 2).…”

Section: F O O D Choicementioning

confidence: 93%

“…Stronkhorst et al (1993) showed that the variation in contaminant levels is relatively low within the same clutch, especially if compared to the variation between clutches. Stronkhorst et al (1993) showed that the variation in contaminant levels is relatively low within the same clutch, especially if compared to the variation between clutches.…”

Section: Correlations Between Breeding Biology and Biochemical And Chmentioning

confidence: 99%

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Effects of polyhalogenated aromatic hydrocarbons and related contaminants on common tern reproduction: Integration of biological, biochemical, and chemical data

Murk

Boudewijn

Meininger³

et al. 1996

Arch. Environ. Contam. Toxicol.

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In eight Dutch or Belgian common tern (Sterna hirundo) colonies, breeding biology and food choice were determined, and 15 second eggs were collected from three-egg clutches for artificial incubation, biochemical analysis and analysis of yolk-sac polyhalogenated hydrocarbon (PHAH) levels. Results from these analyses were combined with biological data from the eggs remaining in each clutch. In some breeding colonies severe flooding, rainy and cold weather, and extreme predation caused extensive losses of eggs and chicks. A relationship was found between yolksac mono-ortho polychlorinated biphenyl (mo-PCB) levels and main food species (fish or insects) of the adult terns before egg-laying. Colony average breeding data differed only slightly, and were difficult to relate to PHAH-levels. When the colonies were grouped after yolksac PHAH-patterns and main food species, significant differences in average egg laying date, incubation period, egg volume and chick weight could be related to differences in yolksac PHAH and retinoid levels, and hepatic ethoxyresorufin-O-deethylase (EROD) activity. The data from all colonies also were combined into one data-set and correlated with the biochemical parameters and PHAH levels. In summary higher yolksac PHAH levels or hepatic EROD-activity correlated with and later egg laying, prolonged incubation period and smaller eggs and chicks. Lower yolksac retinoid- and plasma thyroid hormone levels, and a higher ratio of plasma retinol over yolksac retinoids correlated with later egg laying, prolonged incubation periods and smaller chicks and eggs. The dynamic environment of the terns had more obvious detrimental effects on breeding success than PHAHs. However, the more subtle effects observed for PHAHs could still be of importance during specific stress circumstances. To monitor site-specific reproduction effects, tree-nesting birds feeding on relatively big and non-migrating fishes would be most suitable. The use of specific biomarkers for exposure and effect is recommended to establish a causal relationship between a certain class of pollutants and an adverse biological effect.

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PAHs: An Ecotoxicological Perspective

Douben¹

2003

118

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Contaminants in eggs of some waterbird species from the Scheldt estuary, SW Netherlands

Cited by 23 publications

References 14 publications

Congener‐specific polychlorinated biphenyl patterns in eggs of aquatic birds from the lower laguna madre, texas

Congener‐specific polychlorinated biphenyl patterns in eggs of aquatic birds from the lower laguna madre, texas

Effects of polyhalogenated aromatic hydrocarbons and related contaminants on common tern reproduction: Integration of biological, biochemical, and chemical data

PAHs: An Ecotoxicological Perspective

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