Document Detail

Effects of contaminant exposure on reproductive success of ospreys (Pandion haliaetus) nesting in Delaware River and Bay, USA.
MedLine Citation:
PMID:  15779762     Owner:  NLM     Status:  MEDLINE    
Despite serious water-quality problems and pollutant loading and retention, Delaware River and Bay (USA) provide important wildlife habitat. In 2002, we conducted a comprehensive evaluation of contaminant exposure and reproduction of ospreys (Pandion haliaetus) breeding in Delaware River and Bay. Sample eggs were collected from 39 nests and analyzed for organochlorine pesticides, polychlorinated biphenyls (PCBs), and mercury; a subset of 15 eggs was analyzed for perfluorinated compounds and polybrominated diphenyl ethers (PBDEs). The fate of each nest was monitored weekly. Concentrations of 10 organochlorine pesticides or metabolites, total PCBs, and several toxic PCB congeners were greater (p < 0.05) in eggs collected between the Chesapeake and Delaware Canal (C and D Canal) and Trenton (Delaware River and northern Bay) compared to other sites. Concentrations of p,p'-dichlorodiphenyldichloroethylene (p,p'-DDE; 0.785-3.84 microg/g wet wt) and total PCBs (5.50-14.5 microg/g wet wt) in eggs collected between the C and D Canal and Trenton were similar to levels recently found in the Chesapeake Bay. In all study segments, at least one young fledged from 66 to 75% of nests. Productivity for Delaware Inland Bays (reference area) and southern Delaware Bay was 1.17 and 1.42 fledglings/active nest, respectively; north of the C and D Canal, productivity was 1.00 fledgling/active nest, which is marginally adequate to maintain the population. Using these data, a logistic regression model found that contaminant concentrations (p,p'-DDE, heptachlor epoxide, chlordane and metabolites, and total PCBs) were predictive of hatching success. Several perfluorinated compounds and PBDEs were detected in eggs at concentrations approaching 1 microg/g wet weight. These findings provide evidence that contaminants continue to be a significant stressor on osprey productivity in the northern Delaware River and Bay.
Pamela C Toschik; Barnett A Rattner; Peter C McGowan; Mary C Christman; David B Carter; Robert C Hale; Cole W Matson; Mary Ann Ottinger
Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, N.I.H., Extramural; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, Non-P.H.S.; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  Environmental toxicology and chemistry / SETAC     Volume:  24     ISSN:  0730-7268     ISO Abbreviation:  Environ. Toxicol. Chem.     Publication Date:  2005 Mar 
Date Detail:
Created Date:  2005-03-22     Completed Date:  2005-11-15     Revised Date:  2007-11-14    
Medline Journal Info:
Nlm Unique ID:  8308958     Medline TA:  Environ Toxicol Chem     Country:  United States    
Other Details:
Languages:  eng     Pagination:  617-28     Citation Subset:  IM    
Marine, Estuarine, and Environmental Science Program, University of Maryland, College Park, Maryland 20742, USA.
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MeSH Terms
DNA / analysis
Embryo, Nonmammalian / drug effects,  physiology
Environmental Monitoring*
Falconiformes / physiology*
Fluorocarbons / toxicity
Hydrocarbons, Chlorinated / toxicity
Mercury / toxicity
Pesticide Residues / analysis,  toxicity*
Phenyl Ethers / toxicity
Polybrominated Biphenyls / toxicity
Reproduction / drug effects*
Water Pollutants, Chemical / analysis,  toxicity*
Zygote / chemistry*,  drug effects*,  physiology
Grant Support
Reg. No./Substance:
0/Fluorocarbons; 0/Hydrocarbons, Chlorinated; 0/Pesticide Residues; 0/Phenyl Ethers; 0/Polybrominated Biphenyls; 0/Water Pollutants, Chemical; 7439-97-6/Mercury; 9007-49-2/DNA

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