Organochlorine residues in brown pelican eggs: Relation to reproductive success

Blus, Lawrence J.; Neely, B.S.; Belisle, Andre A.; Prouty, Richard M.

doi:10.1016/0013-9327(74)90075-5

Cited by 82 publications

(42 citation statements)

References 19 publications

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“…In general, however, there are no indications as yet that PCBs are involved in any reduction of reproduction in birds. The levels found are relatively low in comparison with some of those found for example in North German Sea Eagles (Koeman et al, 1972;Blus et al, 1974).…”

Section: Resultscontrasting

confidence: 62%

“…Blus et al (1974) found that reproduction in the Brown Pelican was still normal in eggs containing <0.54 ppm of dieldrin.…”

Section: Resultsmentioning

confidence: 97%

“…A strong correlation was found between the amount of DDE (metabolite of DDT) in eggs with reproductive success or decline of the Brown Pelican (Pelecanus occidentalis) in South Carolina (Blus et al, 1974). Reproductive success was normal in those nests in which sample eggs contained 2.5 ppm DDE or less, while in those with eggs exceeding that level no downy young were produced (Ibid.).…”

Section: Resultsmentioning

confidence: 99%

See 2 more Smart Citations

Persistent Pollutants in Audouin's Gull (Larus audouinii) in the Western Mediterranean: A Case-study with Wide Implications?

Bijleveld¹,

Goeldlin

Mayol³

1979

Envir. Conserv.

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The possibility of persistent pollutants playing an adverse role in the reproductive success of Audouin's Gull in the western Mediterranean was examined through chemical analyses of 7 eggs of this species that did not hatch. Residues of organochlorine compounds and mercury were found.The conclusion has been reached that a further increase of present levels of DDE may well lead to a decline of the reproductive success of the species in the western Mediterranean, especially in the northern part. These observations, although limited, could have implications for further species as is already indicated by other work cited.

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Section: Resultscontrasting

confidence: 62%

“…Blus et al (1974) found that reproduction in the Brown Pelican was still normal in eggs containing <0.54 ppm of dieldrin.…”

Section: Resultsmentioning

confidence: 97%

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Persistent Pollutants in Audouin's Gull (Larus audouinii) in the Western Mediterranean: A Case-study with Wide Implications?

Bijleveld¹,

Goeldlin

Mayol³

1979

Envir. Conserv.

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“…Pelicans declined from about 5,000 individuals in Texas in the early 1960s, to fewer than 20 individuals by 1974 (King et al 1977). Eggshell thinning, caused by the endocrine disruption effects of DDT, led to total reproductive failures (Blus et al 1974). After DDT use was banned in the United States, pelican populations increased (King et al 1985), and they are no longer federally listed as threatened or endangered.…”

Section: Pollutantsmentioning

confidence: 99%

“…Populations disappeared in other places, and reintroductions were necessary. The mechanism of decline was through eggshell thinning caused by DDT; pelicans that incubated broke their eggs (Blus et al 1974). …”

Section: Brown Pelicanmentioning

confidence: 99%

Avian Resources of the Northern Gulf of Mexico

Burger¹

2017

Habitats and Biota of the Gulf of Mexico: Before the Deepwater Horizon Oil Spill

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Polychlorinated biphenyls, dioxins, furans, and organochlorine pesticides in belted kingfisher eggs from the upper Hudson River basin, New York, USA

Custer

Gray

2009

Enviro Toxic and Chemistry

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Nesting belted kingfishers (hereafter kingfishers, Ceryle alcyon) were studied on the Hudson River near Fort Edward south to New Baltimore (NY, USA) and three nearby river drainages in 2004. Concentrations of 28 organochlorine pesticides, 160 polychlorinated biphenyl (PCB) congeners, and 17 dioxin and furan (PCDD-F) congeners were quantified in kingfisher eggs. The pattern of organochlorine pesticides and PCDD-F congeners did not differ significantly between 14 eggs collected from individual nests on the Hudson River and five eggs similarly collected on three other nearby rivers. In contrast, the pattern of PCB congeners in eggs collected on the Hudson River differed significantly from the other rivers. The differences in patterns of PCB congeners were associated with a higher representation of lower-numbered congeners on the Hudson River than the other rivers. The higher prevalence of the lower-numbered congeners and lower prevalence of the higher-numbered congeners is consistent with Aroclor 1016 and 1242 being the source of the PCBs on the Hudson River. Concentrations in a sample egg collected at each nest were compared to nest survival and egg success (the proportion of eggs hatching in a clutch if at least one egg hatched) of the remaining eggs in the clutch. Models that predicted nest survival and egg success as functions of contaminant levels were poorly distinguished from models that presumed no such associations. Small sample sizes could have contributed to the inability to distinguish among contaminant and no toxicant models. However, we cannot rule out the possibility that contaminant concentrations on the Hudson River were not sufficiently high to demonstrate a relationship between contaminant concentrations and reproductive success in kingfishers.

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Organochlorine residues in brown pelican eggs: Relation to reproductive success

Cited by 82 publications

References 19 publications

Persistent Pollutants in Audouin's Gull (Larus audouinii) in the Western Mediterranean: A Case-study with Wide Implications?

Persistent Pollutants in Audouin's Gull (Larus audouinii) in the Western Mediterranean: A Case-study with Wide Implications?

Avian Resources of the Northern Gulf of Mexico

Polychlorinated biphenyls, dioxins, furans, and organochlorine pesticides in belted kingfisher eggs from the upper Hudson River basin, New York, USA

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