| Abstract: | Waterfowl wintering on the Yazoo National Wildlife Refuge (NWR) were contaminated (ltoreq 4 ppm wet wt) with dichloro diphenyl trichloroethane (DDT) and 1,1-dichloro-2,2-bis-(p-chlorophenyl) ethylene (DDE), but residues were below levels known to affect waterfowl. Eggs of some nesting waterbirds contained higher than expected levels of DDE, especially those of green-backed herons (Butorides striatus), ranging up to 43 ppm wet weight. Hatching success (P lt 0.05) and eggshell thickness (P lt 0.05) in green-backed herons and anhingas (Anhinga anhinga) were negatively correlated with DDE in the eggs, and shell thinning (P lt 0.05) was evident 12-13 years after DDT was banned in the United States. The threshold level of DDE determined necessary for reduced hatching success in green-backed heron eggs was 5.1-10 ppm wet weight. These results further increase our ability to interpret DDE concentrations in waterbirds and predict their potential effects on productivity. |
| Genre: | Article |
| ProdID: | 5220012 |
| Citation Author: | White, D.H.; Fleming, W.J.; Ensor, K.L. |
| Citation Contributing Office: | Patuxent Wildlife Research Center |
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| Citation End Page: | 729 |
| Citation Issue: | 4 |
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| Citation Language: | English |
| Citation Larger Work Title: | Journal of Wildlife Management |
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| Citation Number Of Pages: | 6 |
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| Citation Phsyical Description: | 724-729 |
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| Citation Search Results Text: | Pesticide contamination and hatching success of waterbirds in Mississippi; 1988; Article; Journal; Journal of Wildlife Management; White, D.H.; Fleming, W.J.; Ensor, K.L. |
| Citation Start Page: | 724 |
| Citation Volume: | 52 |
| Citation Year: | 1988 |
| Type: | citation/reference |
| Text: | Pesticide contamination and hatching success of waterbirds in Mississippi; 1988; Article; Journal; Journal of Wildlife Management; White, D.H.; Fleming, W.J.; Ensor, K.L. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| URL (DOCUMENT): | http://www.jstor.org/stable/3800937 |
| Date Other: | Wed, 16 Jun 2010 12:19 -0500 |
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