Organochlorines and reproductive success of birds in orchard and non-orchard areas of central British Columbia, Canada, 1990?91

Elliott, John E.; Martin, Pamela A.; Arnold, Todd W.; Sinclair, Pamela H.

doi:10.1007/bf00214144

Cited by 62 publications

(64 citation statements)

References 23 publications

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“…Frank et al (1975) found high levels of organochlorine contaminants in terrestrial bird species, collected in 1971, from the Niagara Peninsula. More recent studies have also found high levels of DDT and its metabolites in wildlife species from various regions of North America (Clark and Krynitsky 1983;Blus et al 1987;Blumton 1990;Elliott et al 1994). In this study, DDE levels in kestrel and robin eggs collected from the northern portion of the Niagara Peninsula, were greater than those observed in other studies (Frank et al 1975;Knupp et al, 1976;Blus et al 1987;Baril et al 1990).…”

Section: Contaminant Levels In Eggs 1987-1989contrasting

confidence: 65%

Organochlorine contaminants in a terrestrial foodweb on the Niagara Peninsula, Ontario, Canada 1987?89

Hebert¹,

Weseloh²,

Kot³

et al. 1994

Arch. Environ. Contam. Toxicol.

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Abstract. During 1987-89, organochlorine contaminant levels were measured in American kestrel (Falco sparverius) eggs and in other components of the terrestrial ecosystem in Ontario, Canada. The extent to which these samples were contaminated with DDE varied geographically. Wet weight levels of DDE were greater in eggs from American kestrels (10.8 mg/kg), American robins (Turdus migratorius) (17.3 mg/kg), European starlings (Sturnus vulgaris) (8.8 mg/kg), and eastern bluebirds (Sailia sailis) (7.6 mg/kg) and in samples of earthworms (Lumbricus sp.) (0.6 mg/kg), soil (0.3 mg/kg) and vegetation (8

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Section: Contaminant Levels In Eggs 1987-1989contrasting

confidence: 65%

Organochlorine contaminants in a terrestrial foodweb on the Niagara Peninsula, Ontario, Canada 1987?89

Hebert¹,

Weseloh²,

Kot³

et al. 1994

Arch. Environ. Contam. Toxicol.

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“…Chem. 22,2003 C.M. Custer et al exposure to PCBs also explains why the logistic regression was not significant in 2000.…”

Section: Total Pcbs: Effects On Tree Swallowsmentioning

confidence: 75%

“…Chem. 22,2003 C.M. Custer et al Ͻ0.001 a Percentage hatching calculated by raising the daily survival probability to the 13th power.…”

Section: Total Pcbs: Exposurementioning

confidence: 99%

Exposure and effects of chemical contaminants on tree swallows nesting along the Housatonic River, Berkshire County, Massachusetts, USA, 1998–2000

Custer

Dummer

et al. 2003

Enviro Toxic and Chemistry

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Hatching success of tree swallows (Tachycineta bicolor) was assessed for three years in relation to chemical contamination along the Housatonic River, Berkshire County (MA, USA), in 1998, 1999, and 2000. Nest boxes were erected at five sites along the Housatonic River and its tributaries and at one reference location. Concentrations of total polychlorinated biphenyls (PCBs) were some of the highest ever reported in bird eggs. Mean concentrations at sites along the Housatonic River ranged between 32 and 101 microg/g wet weight. A significant negative relationship was observed between concentrations of total PCBs in clutches and hatching success. A significant negative relationship was also observed between hatching success and the sum of the total dioxins and furans and the associated toxic equivalents (TEQs) for dioxins and furans. In a combined model with PCB TEQs and dioxin/furan TEQs, PCB TEQs were not significantly correlated to hatching success, whereas dioxin/furan TEQs were. Contamination of tree swallows was from local food sources. Accumulation rates of total PCBs in 12-d-old nestlings averaged between 34 and 76 microg/d at the sites along the main stem of the Housatonic River compared to <1 microg/d at the reference location.

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“…The wintering source of the DDE reported in this study contrasts with the findings from a similar study of migratory ospreys (Pandion haliaetus) where the nesting area was the major source of DDE (Elliott et al 2007). Additionally, DDE contamination of other bird species has been linked to exposure on the breeding grounds (e.g., Elliott et al 1994, Harris et al 2000, Richards et al 2005. Therefore, no generalizations can be made about sources of contaminant exposure in migratory species (i.e., findings can vary from species to species).…”

Section: Discussionmentioning

confidence: 99%

Wintering area DDE source to migratory white-faced ibis revealed by satellite telemetry and prey sampling

et al. 2009

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Locations of contaminant exposure for nesting migratory species are difficult to fully understand because of possible additional sources encountered during migration or on the wintering grounds. A portion of the migratory white-faced ibis (Plegadis chihi) nesting at Carson Lake, Nevada continues to be exposed to dichloro-diphenyldichloroethylene (DDE) with no change, which is unusual, observed in egg concentrations between 1985 and 2000. About 45 to 63% of the earliest nesting segment shows reduced reproductive success correlated with elevated egg concentrations of > 4 µg/g wet weight (ww). Local prey (primarily earthworms) near nests contained little DDE so we tracked the migration and wintering movements of 20 adult males during 2000-2004 to determine the possible source. At various wintering sites, we found a correlation (r 2 = 0.518, P = 0.0125, N = 11) between DDE in earthworm composites and DDE in blood plasma of white-faced ibis wintering there, although the plasma was collected on their breeding grounds soon after arrival. The main source of DDE was wintering areas in the Mexicali Valley of Baja California Norte, Mexico, and probably the adjacent Imperial Valley, California, USA. This unusual continuing DDE problem for white-face ibis is associated with: the long-term persistence in soil of DDE; the earthworms' ability to bioconcentrate DDE from soil; the proclivity of white-faced ibis to feed on earthworms in agricultural fields; the species extreme sensitivity to DDE in their eggs; and perhaps its life history strategy of being a "capital breeder". We suggest surveying and sampling white-faced ibis eggs at nesting colonies, especially at Carson Lake, to monitor the continuing influence of DDE.

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Organochlorines and reproductive success of birds in orchard and non-orchard areas of central British Columbia, Canada, 1990?91

Cited by 62 publications

References 23 publications

Organochlorine contaminants in a terrestrial foodweb on the Niagara Peninsula, Ontario, Canada 1987?89

Organochlorine contaminants in a terrestrial foodweb on the Niagara Peninsula, Ontario, Canada 1987?89

Exposure and effects of chemical contaminants on tree swallows nesting along the Housatonic River, Berkshire County, Massachusetts, USA, 1998–2000

Wintering area DDE source to migratory white-faced ibis revealed by satellite telemetry and prey sampling

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