PCB congeners, DDE, dieldrin and mercury in eggs from an expanding colony of cormorants (Phalacrocorax carbo)

Mason, C. F.; Ekins, G.; Ratford, J R

doi:10.1016/s0045-6535(97)00019-2

Cited by 21 publications

(4 citation statements)

References 13 publications

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“…As demonstrated in other studies, the most common PCB congeners in colonial waterbird eggs from Galveston Bay were 153, 138, 180, and 118. This pattern seems to be the most commonly observed in fish‐eating birds [32–34]. We did not observe any differences in PCB congener profiles or in degree of chlorination among eggs of the three species studied.…”

Section: Discussionsupporting

confidence: 67%

Persistent organochlorine pollutants in eggs of colonial waterbirds from Galveston Bay and East Texas, USA

Frank

Mora

Sericano

et al. 2001

Enviro Toxic and Chemistry

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Eggs of neotropic cormorants (Phalacrocorax brasilianus), black-crowned night herons (Nycticorax nycticorax), and great egrets (Ardea alba) nesting on several locations in Galveston Bay (TX, USA) and at two control sites outside the bay were collected during April-May 1996 and analyzed for chlorinated pesticides, PCBs, polychlorinated dibenzo-p-dioxins, and polychlorinated dibenzofurans. Additionally, concentrations of 2,3,7,8-tetrachlorodibenzo-p-dioxin equivalents (TCDD-EQs) were determined by use of relative potency factors (TEQs) or the H4IIE-luc bioassay TCDD-EQs. Concentrations of 1,1,-dichloro-2,2-bis(p-chlorophenyl)ethylene (DDE) were greater in eggs of neotropic cormorants from Alexander Island (mean = 1,040 ng/g wet wt) in the Houston Ship Channel (Houston, TX, USA) and in those from Telfair Island (mean = 1,460 ng/g wet wt), a reference location outside the bay, than in most locations inside the bay (mean range = 119-453 ng/g wet wt). Mean PCB concentrations were greater in eggs of neotropic cormorants from Alexander Island (mean = 5,720 ng/g wet wt) than in eggs of cormorants from areas farther away from the ship channel, including two reference sites outside the bay (mean range = 404-3,140 ng/g wet wt). The TCDD was the main dioxin congener detected in eggs from all locations within Galveston Bay. Instrumental TEQs in eggs ranged from 67 pg/g wet weight at control sites to 452 pg/g wet weight at Alexander Island. Concentrations of TCDD-EQs determined in the H4IIE assay were correlated with instrumental TEQs and were greater in eggs of cormorants from islands within the bay, although these were farther away from the ship channel. Overall, concentrations of DDE, PCBs, TCDD, and TCDD-EQs were less than the threshold levels known to affect reproduction. However, some eggs contained concentrations of total PCBs or DDE greater than what would elicit adverse effects on birds. No identifiable deformities or abnormalities were detected in embryos collected from all sites.

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Section: Discussionsupporting

confidence: 67%

Persistent organochlorine pollutants in eggs of colonial waterbirds from Galveston Bay and East Texas, USA

Frank

Mora

Sericano

et al. 2001

Enviro Toxic and Chemistry

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“…The measured differences in the contamination of cormorants by pesticides according to the study site, the subspecies (P. c. carbo or P. c. sinensis), age or sex of the birds were found non-significant (see figure 4.1). The different species of cormorants were often used as models for studies in toxicology [30,31,32,33]. The concentrations of organochlorine pesticides identified by these authors in different tissues of great cormorants were generally higher than those observed in the basin of the Loire River, with no impact on populations, such as cases of direct mortality or reduced expansion of the population.…”

Section: Organochlorine Pesticidesmentioning

confidence: 99%

Flagship Species Conservation and Introduced Species Invasion : Toxic Aspects Along Loire River (France)

Lemarchand¹,

Rosoux²,

Talon³

et al. 2014

Pesticides - Toxic Aspects

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“…2001) die höchsten PCB‐Werte. Auch bei anderen Vogelarten, wie der Dreizehenmöwe oder dem Kormoran ( Phalacrocorax carbo ) dominieren diese drei Kongenere das PCB‐Gemisch (Denker 1996, Mason et al. 1997).…”

Section: Diskussionunclassified

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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PCB congeners, DDE, dieldrin and mercury in eggs from an expanding colony of cormorants (Phalacrocorax carbo)

Cited by 21 publications

References 13 publications

Persistent organochlorine pollutants in eggs of colonial waterbirds from Galveston Bay and East Texas, USA

Persistent organochlorine pollutants in eggs of colonial waterbirds from Galveston Bay and East Texas, USA

Flagship Species Conservation and Introduced Species Invasion : Toxic Aspects Along Loire River (France)

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.

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