REPRODUCTION AND ENVIRONMENTAL CONTAMINATION IN TREE SWALLOWS NESTINGIN THE FOX RIVER DRAINAGE AND GREEN-BAY, WISCONSIN, USA

Citation
Cm. Custer et al., REPRODUCTION AND ENVIRONMENTAL CONTAMINATION IN TREE SWALLOWS NESTINGIN THE FOX RIVER DRAINAGE AND GREEN-BAY, WISCONSIN, USA, Environmental toxicology and chemistry, 17(9), 1998, pp. 1786-1798
Citations number
54
Categorie Soggetti
Environmental Sciences",Toxicology,Chemistry
ISSN journal
07307268
Volume
17
Issue
9
Year of publication
1998
Pages
1786 - 1798
Database
ISI
SICI code
0730-7268(1998)17:9<1786:RAECIT>2.0.ZU;2-Q
Abstract
Concentration, accumulation, and effects of polychlorinated biphenyls (PCBs) on reproduction in tree swallows (Tachycineta bicolor) were stu died at four sites in the Fox River drainage and in Green Bay, Lake Mi chigan, Wisconsin, USA, in 1994 and 1995. Total PCBs in eggs and newly hatched young (mean = 3.01 mu g/g wet weight, years and sites combine d) and 12-d-old nestlings (mean = 2.34 mu g/g wet weight) at two conta minated sites (Kidney Island and Arrowhead) were higher than concentra tions at two reference sites (Lake Poygan and High Cliff State Park, y ears and sites combined, pippers mean = 0.26 mu g/g, nestlings mean = 0.01 mu g/g). Concentrations of 11l PCB congeners were also higher at contaminated compared to reference sites. Poly chlorinated biphenyls ( PCBs) accumulated in nestlings at a higher rate (1.34-6.69 mu g/d) at contaminated sites compared to reference locations (0.06-0.42 mu g/d). Dichlorodiphenyldichloroethylene (DDE) was the only other organochlor ine found in all samples. concentrations for all samples averaged less than or equal to 0.20 mu g/g wet weight. Total PCBs and p,p'-DDE conc entrations did not differ among clutches where all eggs hatched, some eggs hatched, and no eggs hatched.