Organochlorine contaminants and Tree Swallows along the Fox River and Green Bay, Wisconsin, USA
Title on liner notes: Making rain for African ornithology. Within contents, click on Posters, then Programme for Poster J section: Conservation and human-related topics
Edited by: N.J. Adams and R.H. Slotow
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Abstract
Green Bay, Wisconsin is contaminated with polychlorinated biphenyls (PCBs) however, whether these contaminants affect reproduction in insectivorous birds is unknown. Tree Swallows, Tachycineta bicolor, are secondary cavity nesters that will nest in boxes and tolerate handling. Because Tree Swallows are aquatic insectivores, residues in their tissues are primarily indicative of contaminants in sediments. We studied swallows at two contaminated and two reference colonies in 1993, 1994, and 1995 in the Green Bay area. Swallows at the two contaminated sites had significantly higher PCB levels in eggs when compared to two reference sites. Eggs from clutches that contained dead embryos had higher PCB concentrations than eggs from clutches where all eggs hatched; there were no contaminant effects overall on reproduction, however. Twelve-day-old nestlings at the two contaminated sites accumulated significantly more PCBs than did nestlings at the reference sites demonstrating that PCB contamination came from the local area. The PCB congener profile in 12-day-old nestlings mirrored the congener profile in their food.
| Publication type | Book chapter |
|---|---|
| Publication Subtype | Book Chapter |
| Title | Organochlorine contaminants and Tree Swallows along the Fox River and Green Bay, Wisconsin, USA |
| Year Published | 1998 |
| Language | English |
| Contributing office(s) | Patuxent Wildlife Research Center |
| Larger Work Type | Book |
| Larger Work Subtype | Other Government Series |
| Larger Work Title | Proceedings of the 22nd International Ornithological Congress, Durban 16-22 August 1998, Abstracts of oral presentations and posters |
| First page | 423 |
| Last page | 424 |
| Google Analytic Metrics | Metrics page |