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Reproductive success of three passerine species exposed to dioxin-like compounds near Midland, Michigan, USA.
- Source :
-
Ecotoxicology (London, England) [Ecotoxicology] 2012 May; Vol. 21 (4), pp. 1145-54. Date of Electronic Publication: 2012 Mar 06. - Publication Year :
- 2012
-
Abstract
- Nests of three passerine birds, house wren (HOWR), tree swallow (TRES), and eastern bluebird (EABL) were monitored daily (2005-2007) at study areas (SAs) downstream of Midland, Michigan where soil and sediment concentrations of polychlorinated dibenzofurans (PCDFs) were significantly greater than the regional background concentrations and upstream reference areas (RAs). Similarly, TRES research conducted at sites contaminated with dioxin-like compounds indicated that concentrations of polychlorinated dibenzo-p-dioxins and PCDFs, expressed as ΣPCDD/DFs and 2,3,7,8-tetrachlorodibenzo-p-dioxin equivalents observed in the diet and eggs of these three species would be predicted to cause significant effects on reproduction. However, site-specific reproductive parameters including hatching success and fledging success at downstream SAs were similar to or greater than those at upstream RAs. Specifically, hatching success was not significantly different among years, species, locations, or between early and late nesting attempts. Of all initiated clutches, 66% (n = 427), 73% (n = 245), and 64% (n = 122) successfully fledged at least one nestling for HOWR, TRES, and EABL, respectively. Overall reproductive performance was similar between SAs and RAs. The reason for these unexpected results is consistent with the fact that there are species-specific and congener-specific differences in sensitivities to the effects of aryl hydrocarbon receptor agonists.
- Subjects :
- Animals
Benzofurans analysis
Benzofurans toxicity
Dibenzofurans, Polychlorinated
Geologic Sediments analysis
Geologic Sediments chemistry
Michigan
Polychlorinated Dibenzodioxins analysis
Polychlorinated Dibenzodioxins toxicity
Receptors, Aryl Hydrocarbon agonists
Risk Assessment
Rivers chemistry
Soil Pollutants analysis
Soil Pollutants toxicity
Water Pollutants, Chemical toxicity
Dioxins toxicity
Environmental Monitoring methods
Reproduction drug effects
Songbirds growth & development
Swallows growth & development
Subjects
Details
- Language :
- English
- ISSN :
- 1573-3017
- Volume :
- 21
- Issue :
- 4
- Database :
- MEDLINE
- Journal :
- Ecotoxicology (London, England)
- Publication Type :
- Academic Journal
- Accession number :
- 22392542
- Full Text :
- https://doi.org/10.1007/s10646-012-0869-4